浙大 PAT 乙级1056

#include<stdio.h>int main(){int i,j,k,sum=0,n;int a[11];scanf("%d",&n);for(i=0;i<n;i++){scanf("%d",&a[i]);}for(i=0;i<n;i++)for(j=0;j<n;j++){if(i!=j){sum+=a[i]*10+a[j];}}printf("%d\n",sum);return 0; }