8 1300 48
2 1 7
0

2504
1000

#include<iostream>
#include<stdio.h>
using namespace std;
int main()
{
    __int64 A,B;
    int m,i,a[10000];
    while(scanf("%d",&m))
    {  
        int k=0;
        int sum=0;
        if(m==0)
            break;
        scanf("%I64d%I64d",&A,&B);
        sum=A+B;
        a[k++]=sum%m;//8  2    0001
        sum=sum/m;   //2 2   01
        while(sum)
        {
          a[k++]=sum%m;
          sum=sum/m;
        }
        for(i=k-1;i>=0;i--)
            cout<<a[i];
        cout<<endl;
    }
    return 0;
}