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