POJ 2316

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

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

 }