#include <stdio.h>
#define NUM (5)
int main(void) {
    int x,y;
    for (y=0;y<NUM;y++) {
        for (x=0;x<NUM;x++) {
            if (x==0 || y==0 || x==NUM-1 || y==NUM-1)   putchar('#');
            else                                        putchar(' ');
        }
        putchar('\n');
    }
    return 0;
}

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#   #
#   #
#   #
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