//a C program to find the square of any number using function.
#include<stdio.h>
int squre_num(int num)
{
    int squre;
    squre=num*num;
    return squre;
}
int main()
{
    int num,squre;
    scanf("%d",&num);
    squre=squre_num(num);
    printf("%d",squre);
    return 0;
}