#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\n");
        return 1;
    }
    for (int i=0;i<n;i++){
        for (int j=0;j<m;j++){
            printf("%d",num);
        }
        printf("\n");
    }
    return 0;
}