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