// editor1
#include<stdio.h>
struct SquareUnit{
    int edge_length;
    int area;
};
int main()
int input_length;
if(scanf("%d",&input_length!=1){
    printf("Invalid input");
    return 1;
}
if(input_length<=0)
{
    printf("Invalid input");
}else{
    struct SquareUnit unit;
    unit.edge_length=input_length;
    unit.area=input_length*input_length;
    printf("%d square meters\n",unit.area);
}