#include<stdio.h>
int main()
{
    int n, m, num;
    scanf("%d", &n);
    scanf("%d", &m);
    scanf("%d", &num);
    
    if(num !=0&& num != 1)
    printf("Invalid input");
        return 0;
    }
    for(int i = 0;i<n;i++){
        for(int j = 0;j<m;j++){
        printf("%d",num);
    }
    printf("\n");
    }
    return 0;
}