C :

#include<stdio.h>
 
 
int main() {
    char ch;
    int m, n;
    scanf("%c", &ch);
    scanf("%d %d", &m, &n);
    int i,j;
    for (i= 0; i < n; ++i) {
        for (j = 0; j < m; ++j) {
            printf("%c", ch);
        }
        printf("\n");
    }
}