#include<bits/stdc++.h>
using namespace std;
const int N = 1000;

char b[N];

int main()
{
    scanf("%s",b);
    for(int i = 0;b[i] != '\0' ;++i)
    {
        if(b[i] >= 'A')
        {
            if(b[i+1] <= '9' && b[i + 1] >= '0')
            {
                for(int j = 0;j < b[i + 1] - '0';++j) putchar(b[i]);
            }
            else
            {
                putchar(b[i]);    
            }
        }
    }
    return 0;
}