#include<stdio.h>

int main ( void )
{
	int i, j, n, m ;

	printf ( "高さ(n)を入力して下さい：" ) ;
	scanf ( "%d", &n ) ;
	printf ( "幅(m)を入力して下さい：" ) ;
	scanf ( "%d", &m ) ;

	for( i = 0 ; i < n ; i++ ){
		for ( j = 0 ; j < m ; j++ ){
			if ( i==0 || i==n-1 || j==0 || j==m-1 ){
				putchar ( '*' ) ;
			} else {
				putchar ( ' ' ) ;
			}
		}
		putchar ( '\n' ) ;
	}
	return 0 ;	
}