It is known that Xiaoshu, Xiaoxue, Xiaohua, Xiaoyuan, and Tanmi respectively obtained the $A$, $B$, $C$, $D$, and $E$ ranks, and they are all honest students who never lie. Therefore, the five-digit number $\overline{\mathrm{ABCDE}}$ is $\qquad$ .

【Solution】: According to the analysis, Xiaoshu: “My rank is better than Xiaoxue” implies: Xiaoshu > Xiaoxue;
Xiaoxue: “My rank is better than Xiaohua” implies: Xiaoshu $>$ Xiaoxue $>$ Xiaohua;
Xiaohua: “My rank is not as good as Xiaoyuan” implies: Xiaoyuan > Xiaohua;
Xiaoyuan: “My rank is not as good as Tanmi” implies: Tanmi $>$ Xiaoyuan $>$ Xiaohua;
Tanmi: “My rank is not as good as Xiaoxue” implies: Xiaoshu $>$ Xiaoxue $>$ Tanmi $>$ Xiaoyuan $>$ Xiaohua.
Xiaoshu is 1st, Xiaoxue is 2nd, Tanmi is 3rd, Xiaoyuan is 4th, and Xiaohua is 5th, so:
$$
A=1, B=2, C=5, D=4, E=3 \text {, }
$$

Therefore, the answer is: 12543.
3. (8 points) Xiaoshu, Xiaoxue, Xiaohua, Xiaoyuan, and Tanmi won the top 5 places (no ties) in the long jump competition. They said:
Xiaoshu: “My ranking is better than Xiaoxue”;
Xiaohua: “My ranking is not as good as Xiaoyuan”;
Tanmi: “My ranking is not as good as Xiaoxue”.
Xiaoxue: “My ranking is better than Xiaohua”;
Xiaoyuan: “My ranking is not as good as Tanmi”;
It is known that Xiaoshu, Xiaoxue, Xiaohua, Xiaoyuan, and Tanmi respectively obtained the $A$, $B$, $C$, $D$, $E$ places, and they are all honest students who never lie. Therefore, the five-digit number $\overline{\mathrm{ABCDE}}$ is $\qquad$