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