#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;
}