Takahashi has K 500-yen coins. (Yen is the currency of Japan.)
If these coins add up to X yen or more, print Yes; otherwise, print No.

-----Constraints-----
 - 1 \leq K \leq 100
 - 1 \leq X \leq 10^5

-----Input-----
Input is given from Standard Input in the following format:
K X

-----Output-----
If the coins add up to X yen or more, print Yes; otherwise, print No.

-----Sample Input-----
2 900

-----Sample Output-----
Yes

Two 500-yen coins add up to 1000 yen, which is not less than X = 900 yen.
[{"code": "k,x = map(int,input().split())\nprint(\"Yes\" if k*500 >= x else \"No\")", "passed": true, "time": 0.24, "memory": 14168.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif(500*k>=x):\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.15, "memory": 14364.0, "status": "done"}, {"code": "K, X = map(int, input().split())\n\nif K * 500 >= X :\n    print('Yes')\nelse :\n    print('No')", "passed": true, "time": 0.22, "memory": 14248.0, "status": "done"}, {"code": "K, X = map(int, input().split())\n\nif 500*K >= X:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.16, "memory": 14144.0, "status": "done"}, {"code": "#150-A\n\nK,X = list(map(int,input().split()))\n\nif 500 * K >= X:\n    print(\"Yes\")\n\nelse:\n    print(\"No\")\n", "passed": true, "time": 0.89, "memory": 14280.0, "status": "done"}, {"code": "k, x = map(int, input().split())\n\nif 500*k >= x:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.25, "memory": 14356.0, "status": "done"}, {"code": "k, x = list(map(int, input().split()))\n\nif k*500 >= x:\n    print('Yes')\nelse:\n    print('No')\n", "passed": true, "time": 0.22, "memory": 14100.0, "status": "done"}, {"code": "K, X=map(int, input().split(\" \"))\n\nif 500*K>=X:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.15, "memory": 14240.0, "status": "done"}, {"code": "K, X = map(int, input().split())\n\nif K * 500 >= X:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.15, "memory": 14240.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif 500*k>=x : print(\"Yes\")\nelse : print(\"No\")", "passed": true, "time": 0.22, "memory": 14100.0, "status": "done"}, {"code": "K, X = list(map(int, input().split()))\nif (X <= ( K * 500 )):\n    print(\"Yes\")\nelse:\n    print(\"No\")\n", "passed": true, "time": 0.14, "memory": 14256.0, "status": "done"}, {"code": "k,x=map(int,input().split())\n\nif 500*k >= x:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.98, "memory": 14292.0, "status": "done"}, {"code": "num500, total = map(int, input().split())\nprint('Yes' if num500 * 500 >= total else 'No')", "passed": true, "time": 0.17, "memory": 14172.0, "status": "done"}, {"code": "K, X = map(int, input().split())\nif K * 500 >= X:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.23, "memory": 14308.0, "status": "done"}, {"code": "k,x = map(int,input().split())\n\nif (500 * k) >= x:\n    print(\"Yes\")\n\nelse:\n    print(\"No\")", "passed": true, "time": 0.15, "memory": 14236.0, "status": "done"}, {"code": "K, X = map(int, input().split())\n\nif K * 500 >= X: print('Yes')\nelse: print('No')", "passed": true, "time": 0.2, "memory": 14192.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nprint(['No','Yes'][500*k>=x])", "passed": true, "time": 0.14, "memory": 14084.0, "status": "done"}, {"code": "k, x = map(int,input().split())\n\nif 500 * k >= x:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.15, "memory": 14352.0, "status": "done"}, {"code": "k, x = map(int, input().split())\n\nif 500*k >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14248.0, "status": "done"}, {"code": "k, x = list(map(int, input().split()))\n\nif 500*k >= x:\n    print(\"Yes\")\nelse:\n    print('No')\n", "passed": true, "time": 0.14, "memory": 14272.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nif 500*k >= x :\n  print('Yes')\nelse :\n  print('No')", "passed": true, "time": 0.14, "memory": 14144.0, "status": "done"}, {"code": "k, x = list(map(int, input().split()))\nprint('Yes') if k *500 >= x else print('No')", "passed": true, "time": 0.81, "memory": 14068.0, "status": "done"}, {"code": "k,x=(int(y) for y in input().split())\n\nif 500*k>=x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14240.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nif 500*k >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14364.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nif k*500 >= x:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14240.0, "status": "done"}, {"code": "a,b=input().split();print('YNeos'[eval(a+'*500<'+b)::2])", "passed": true, "time": 0.14, "memory": 14188.0, "status": "done"}, {"code": "k,x = [int(x) for x in input().split()]\nif k * 500 >= x:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14180.0, "status": "done"}, {"code": "k, x = list(map(int,input().split()))\nprint(('Yes' if 500*k>=x else 'No'))\n", "passed": true, "time": 0.23, "memory": 14336.0, "status": "done"}, {"code": "k, x = map(int, input().split())\n\nif 500 * k >= x:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14244.0, "status": "done"}, {"code": "import sys\nK, X = map(int, next(sys.stdin).split())\nprint('Yes' if K * 500 >= X else 'No')", "passed": true, "time": 0.14, "memory": 14312.0, "status": "done"}, {"code": "K,X=map(int,input().split())\nif K*500<X:\n    print('No')\nelse:\n    print('Yes')", "passed": true, "time": 0.14, "memory": 14168.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif (k*500>=x):\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.15, "memory": 14240.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nprint(\"Yes\" if 500*k>=x else\"No\")", "passed": true, "time": 0.15, "memory": 14084.0, "status": "done"}, {"code": "k, x = map( int, input().split() )\n\nif 500 * k < x:\n    print( \"No\" )\nelse:\n    print( \"Yes\" )", "passed": true, "time": 0.73, "memory": 14268.0, "status": "done"}, {"code": "#!/usr/bin/env python3\n\ndef main():\n    k, x = list(map(int, input().split()))\n    print((\"Yes\" if 500 * k >= x else \"No\"))\n\n\ndef __starting_point():\n    main()\n\n__starting_point()", "passed": true, "time": 0.14, "memory": 14320.0, "status": "done"}, {"code": "ri = lambda S: [int(v) for v in S.split()]\ndef rii(): return ri(input())\n \nK, X = rii()\n\nprint((\"Yes\" if K * 500 >= X else \"No\"))\n", "passed": true, "time": 0.25, "memory": 14080.0, "status": "done"}, {"code": "k,x = map(int, input().split())\nif k*500 < x:\n    print('No')\nelse:\n    print('Yes')", "passed": true, "time": 0.14, "memory": 14336.0, "status": "done"}, {"code": "K, X = list(map(int, input().split()))\nprint((\"Yes\" if 500 * K >= X else \"No\"))\n", "passed": true, "time": 0.15, "memory": 14080.0, "status": "done"}, {"code": "K,X = map(int,input().split())\nif K*500 >= X:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.15, "memory": 14236.0, "status": "done"}, {"code": "K,X=map(int,input().split())\nif 500*K>=X:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14240.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nprint(\"Yes\" if 500*k >= x else \"No\")", "passed": true, "time": 0.15, "memory": 14240.0, "status": "done"}, {"code": "K, X = map(int, input().split())\nprint('Yes' if 500 * K >= X else 'No')", "passed": true, "time": 0.15, "memory": 14284.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nif k*500 >= x:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14112.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nprint('Yes' if 500*k >= x else 'No')", "passed": true, "time": 0.14, "memory": 14172.0, "status": "done"}, {"code": "\ndef main():\n    k, x = map(int, input().split(\" \"))\n    if 500*k >= x:\n        print(\"Yes\")\n    else:\n        print(\"No\")\n\ndef __starting_point():\n    main()\n__starting_point()", "passed": true, "time": 0.23, "memory": 14164.0, "status": "done"}, {"code": "m = input().split(\" \")\nprint(\"Yes\" if ((int(m[0]) * 500 ) >= int(m[1])) else \"No\")", "passed": true, "time": 0.15, "memory": 14148.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif k*500>=x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14252.0, "status": "done"}, {"code": "a = list(map(int,input().split()))\nif int(a[0])*500 >= int(a[1]):\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14076.0, "status": "done"}, {"code": "K,X=map(int,input().split())\nif K*500>=X:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.14, "memory": 14120.0, "status": "done"}, {"code": "k, x = map(int,input().split())\nprint('Yes' if 500*k >= x else 'No')", "passed": true, "time": 0.14, "memory": 14080.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif 500*k>=x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14152.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nprint('Yes' if 500*k >= x else 'No')", "passed": true, "time": 0.14, "memory": 14284.0, "status": "done"}, {"code": "K,X = map(int,input().split())\n\n\nif K*500 >= X:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.14, "memory": 14312.0, "status": "done"}, {"code": "K, X = list(map(int,input().split()))\n\nif 500 * K >= X:\n    print('Yes')\nelse:\n    print('No')\n", "passed": true, "time": 0.14, "memory": 14364.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nprint(\"YNeos\"[500*k<x::2])", "passed": true, "time": 0.14, "memory": 14064.0, "status": "done"}, {"code": "import math\nfrom collections import Counter\nfrom itertools import product\n\nii = lambda : int(input())\nmi = lambda : map(int,input().split())\nli = lambda : list(map(int,input().split()))\n\nk,x = mi()\n\nif 500*k >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14196.0, "status": "done"}, {"code": "K,X= map(int,input().split())\n\nif 500*K >= X:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14304.0, "status": "done"}, {"code": "K, X = map(int, input().split())\nprint('No' if 500 * K < X else 'Yes')", "passed": true, "time": 0.14, "memory": 14176.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nprint(\"Yes\") if k * 500 >= x else print(\"No\")\n", "passed": true, "time": 0.14, "memory": 14084.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nmoney=k*500\nif x<=money:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14188.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nif 500 * k >= x:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.28, "memory": 14364.0, "status": "done"}, {"code": "import sys\ninput = sys.stdin.readline\n\nk, x = map(int, input().split())\nif k * 500 >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14044.0, "status": "done"}, {"code": "k, x = list(map(int, input().split()))\nif k * 500 >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")\n", "passed": true, "time": 0.23, "memory": 14320.0, "status": "done"}, {"code": "a,b = map(int, input().split(\" \"))\nprint(\"Yes\") if 500 * a >= b else print(\"No\")", "passed": true, "time": 0.14, "memory": 14196.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nif 500*k>=x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.21, "memory": 14244.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nprint('Yes' if x <= 500*k else 'No')", "passed": true, "time": 0.15, "memory": 14040.0, "status": "done"}, {"code": "K, X = map(int, input().split())\n\nif K*500 >= X:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14168.0, "status": "done"}, {"code": "k , x = input().split()\nk , x = [int(k) , int(x)]\nif k*500 >= x :\n   print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14292.0, "status": "done"}, {"code": "n=input()\nx=n.split()\nif 500*int(x[0])>=int(x[1]):\n  print('Yes')\nelif 500*int(x[0])<int(x[1]):\n  print('No')", "passed": true, "time": 0.21, "memory": 14292.0, "status": "done"}, {"code": "def resolve():\n    k,x = map(int,input().split())\n    print('Yes' if k*500>=x else 'No')\nresolve()", "passed": true, "time": 0.18, "memory": 14248.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nif k * 500 >= x:\n    print('Yes')\nelse:\n    print('No')", "passed": true, "time": 0.14, "memory": 14240.0, "status": "done"}, {"code": "K, X = map(int,input().split())\nif K * 500 >= X:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14112.0, "status": "done"}, {"code": "# coding: utf-8\n# Your code here!\nk,x=map(int,input().split())\nif 500*k>=x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14136.0, "status": "done"}, {"code": "K,X = map(int,input().split())\nans = 500 * K\nif ans >= X:\n    print(\"Yes\")\n    return\nprint(\"No\")", "passed": true, "time": 0.14, "memory": 14280.0, "status": "done"}, {"code": "K, X = [int(n) for n in input().split()]\nprint(('Yes' if 500 * K >= X else 'No'))\n", "passed": true, "time": 0.14, "memory": 14224.0, "status": "done"}, {"code": "k, x = map(int, input().split())\nif k*500 >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14148.0, "status": "done"}, {"code": "N,X = map(int,input().split())\n\nif N*500 >= X:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14332.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nif 500 * k < x:\n    print('No')\nelse:\n    print('Yes')", "passed": true, "time": 0.14, "memory": 14152.0, "status": "done"}, {"code": "k,x = map(int,input().split())\n\nif 500 * k >= x :\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14132.0, "status": "done"}, {"code": "K, X = map(int, input().split())\nif 500 * K >= X:\n    print('Yes')\n    return\nelse:\n    print('No')\n    return", "passed": true, "time": 0.14, "memory": 14188.0, "status": "done"}, {"code": "K,X=map(int,input().split())\nif 500*K>=X:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14148.0, "status": "done"}, {"code": "a,s=map(int, input().split())\n \nif 500*a>=s:\n  print('Yes') \nelse:\n    print('No')", "passed": true, "time": 0.14, "memory": 14144.0, "status": "done"}, {"code": "#ABC150A\nk,x = list(map(int,input().split()))\nprint((\"Yes\" if k*500>=x else \"No\"))\n", "passed": true, "time": 0.23, "memory": 14188.0, "status": "done"}, {"code": "k,x=map(int,input().split())\nprint('YNeos'[500*k<x::2])", "passed": true, "time": 0.15, "memory": 14280.0, "status": "done"}, {"code": "K,X = map(int,input().split())\n\nif K*500>=X:\n  print ('Yes')\nelse:\n  print ('No')", "passed": true, "time": 0.19, "memory": 14308.0, "status": "done"}, {"code": "k,x = map(int, input().split())\nprint(\"Yes\" if k * 500 >= x else \"No\")", "passed": true, "time": 0.24, "memory": 14176.0, "status": "done"}, {"code": "k, x = list(map(int, input().split()))\n\nif k*500 >= x:\n  print('Yes')\nelse:\n  print('No')\n  \n", "passed": true, "time": 0.15, "memory": 14208.0, "status": "done"}, {"code": "K,X = map(int,input().split())\n\nans = K * 500\nif ans >= X:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14188.0, "status": "done"}, {"code": "k,x = list(map(int,input().split()))\n\nif(k*500>=x):\n\tprint(\"Yes\")\nelse:\n\tprint(\"No\")\n", "passed": true, "time": 0.16, "memory": 14380.0, "status": "done"}, {"code": "N,X=map(int,input().split())\nif N*500>=X:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.22, "memory": 14364.0, "status": "done"}, {"code": "a,s=list(map(int, input().split()))\n\nif 500*a>=s:\n  print('Yes') \nelse:\n    print('No')\n", "passed": true, "time": 0.14, "memory": 14388.0, "status": "done"}, {"code": "K,X = map(int,input().split())\nif 500*K >= X:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14360.0, "status": "done"}, {"code": "k,x=map(int,input().split())\n\nif (k*500)>=x:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14148.0, "status": "done"}, {"code": "a,b = map(int, input().split())\n\nprint('Yes' if a*500 >= b else 'No')", "passed": true, "time": 0.14, "memory": 14176.0, "status": "done"}, {"code": "K,X = map(int,input().split())\nif(500*K >= X):\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14176.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nprint('Yes' if x<=k*500 else 'No')", "passed": true, "time": 0.15, "memory": 14296.0, "status": "done"}, {"code": "k,x = map(int,input().split())\nif k*500 >= x:\n    print(\"Yes\")\nelse:\n    print(\"No\")", "passed": true, "time": 0.14, "memory": 14152.0, "status": "done"}, {"code": "k, x = [int(i) for i in input().split()]\nif x <= 500 * k:\n  print('Yes')\nelse:\n  print('No')", "passed": true, "time": 0.14, "memory": 14208.0, "status": "done"}, {"code": "k,x=map(int, input().split())   \nprint(\"Yes\" if 500*k>=x else \"No\")", "passed": true, "time": 0.14, "memory": 14308.0, "status": "done"}, {"code": "k,x = map(int,input().split())\n\nif 500*k >= x:\n  print(\"Yes\")\nelse:\n  print(\"No\")", "passed": true, "time": 0.14, "memory": 14288.0, "status": "done"}]