#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");
    } else {
        s.area = s.edge * s.edge;
        printf("%d squre meters", s.area);
    }
    return 0;