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