#include <iostream>
using namespace std;

int main() {
    
    int month;
    cin >> month;

    // write your code here......
    if(month<1 || month>12){
        cout<<"不合法"<<endl;

    }
    if(month>=3 && month<=5){
        cout<<"春季"<<endl;
    }
    if(month>=6 && month<=8){
        cout<<"夏季"<<endl;
    }
    if(month>=9 && month<=11){
        cout<<"秋季"<<endl;
    }
    if(month==1 || month==2 || month==12){
        cout<<"冬季"<<endl;
    }



    return 0;
}