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