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