problem_1

#include<stdio.h>
int main()
{
    int y;
    scanf("%d", &y);
if(y%100==0)
printf("Its not a leap-year\n");
  else  if(y%4==0 || y%400==0)
        printf("Its is a leap-year\n");
    else
        printf("Its is not a leap-year\n");
    return 0;
}