#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;
    
    
}