#include <iostream>
using namespace std;
int main() {
int month;
cin >> month;
// write your code here......
switch(month){
case 1:
case 2:cout<<"冬季"<<endl;break;
case 3:
case 4:
case 5:cout<<"春季"<<endl;break;
case 6:
case 7:
case 8:cout<<"夏季"<<endl;break;
case 9:
case 10:
case 11:cout<<"秋季"<<endl;break;
case 12:cout<<"冬季"<<endl;break;
default:cout<<"不合法"<<endl;
}
return 0;
}