#include<stdio.h>

struct square {
    int edge;
    int area;
};

int main() {
    struct square s;
    scanf("%d", &s.edge);
    
    if(s,edge <= 0) {
        printf("Invalid input");
        return 0;
    }
    
    s.area = s.edge * s.edge;
    printf("%d square meters". s,area);
    
    return 0;
}