1056. 组合数的和(15)

#include<iostream>using namespace std;int main(){int n,i,j,sum=0;char str[10]={0};cin>>n;for(i=0;i<n;i++) cin>>str[i];for(i=0;i<n;i++){for(j=0;j<n;j++){if(str[i]==str[j]){continue;}else{sum+=(str[i]-'0')*10+str[j]-'0';}}}cout<<sum<<endl;return 0;}