#include <stdio.h>
 
int leap(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;
 
    scanf("%d", &year);
 
    if(leap(year))
    {
        printf("うるう年です\n");
    }
    else
    {
        printf("うるう年ではありません\n");
    }
 
    return 0;
}

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