#include<iostream> // cin\cout\endl #include<cstdio> //scanf()\printf() #include<cstring> // strcpy()\strcat()\strcmp()\strlen()\memset() #include<cmath> //sqrt()\pow()\abs()\ceil()\floor()\max()\min() using namespace std; int main(){ int year; cin>>year; if(((year%4==0)&&(year%100!=0))||(year%400==0)) { cout<<"leap year"; } else { cout<<"not leap year"; } return 0; }