#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.ege;
        printf("%d square meters", s.area);
    }
    return 0;
}