POJ 2316

#include<iostream>
#include<stdio.h>
#include<string>
using namespace std;

int poo[10];
int main()
{
    //freopen("acm.acm","r",stdin);
    memset(poo,0,sizeof(int)*10);
    int num;
    int i;
    string s;
    cin>>s;
    num = s.length();
    for(i = 0; i < num; ++ i)
    {
        poo[i] += s[i] - '0';
    }
    while(cin>>s)
    {
        for(i = 0; i < num; ++ i)
        {
            poo[i] += s[i] - '0';
        }
    }
    for(i = 0; i < num; ++ i)
    {
        cout<<poo[i]%10;
    }

}