#include <stdio.h>
struct Square{
    int edge;
    int area;
};
void CalculatedArea(struct Square *s){
    s->area = s->edge * s->edge;
}
int main(){
    struct Square sq;
    scanf("%d",&sq.edge);
    if(sq.edge <= 0){
        printf("Invalid input");
        return 0;
    }
    calculateArea(&sq);
    printf("%d square meters",sq.area);
    return 0;
    }