#include <stdio.h>
int main(void)
{
int i, k, m = 0;
printf("i="); scanf("%d", &i);

if(i <= 0 || i >= 7){
printf("error\n");
} else {
while (m != i){
k = 0;
while(k != i){
putchar('*');
k++;
}
putchar('\n');
m++;
}
}
return 0;
}