\colorbox{black}{\tiny{\text\color{grey}洛谷 / 评测记录 / 评测详情}}

$\colorbox{black}{\color{white}R44934718 记录详情}$

$\color{lightblue}\text{测试点信息}$

$\begin{matrix} \#1&\#2&\#3&\#4\\ \colorbox{green}{\color{white}AC}&\colorbox{green}{\color{white}AC}&\colorbox{green}{\color{white}AC}&\colorbox{red}{\color{white}WA} \end{matrix}$

$\color{lightblue}\text{源代码}$

#include"stdio.h"
#include"algorithm"
using namespace std;
bool cmp(int a,int b){
    int ansa,ansb;
    while(1){
        if(a<10){
            ansa=a;
            break;
        }
        a/=10;
    }
    while(1){
        if(b<10){
            ansb=b;
            break;
        }
        b/=10;
    }
    return ansa>ansb;
}
int main(void){
    int n,a[25];
    scanf("%d",&n);
    for(int i=0;i<n;i++)
        scanf("%d",&a[i]);
    sort(a,a+n,cmp);
    for(int i=0;i<n;i++)
        printf("%d",a[i]);
    return 0;
}