#include "stdio.h"

int isLeapYear(int year)
{
	if (year % 400 == 0)
		return 1;
	else if (year % 100 == 0)
		return 0;
	else if (year % 4 == 0)
		return 1;
	else
		return 0;
}


int main()
{
    int year;

    while(1) {
    	printf("Enter any year: ");
    	scanf("%d", &year);
    	if(isLeapYear(year)) {
        	printf("%d is leap year!\n", year);
    	}
    	else {
        	printf("%d is not leap year!\n", year);
    	}
    }

    return 0;
}