#include <array>
#include <iostream>
#include <string>
using namespace std;

int main() {
    int month;
    cin >> month;
    if (month > 12 || month < 1) {
        cout << "不合法" << endl;
        return 0;
    }
    month = (month + 9) % 12 / 3;
    array<string, 4> arr = {"春季", "夏季", "秋季", "冬季"};
    cout << arr[month] << endl;
}