#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;
    } else if (month < 3) {
        cout << "冬季" << endl;
    } else if (month < 6) {
        cout << "春季" << endl;
    } else if (month < 9) {
        cout << "夏季" << endl;
    } else if (month < 12) {
        cout << "秋季" << endl;
    } else {
        cout << "冬季" << endl;
    }

    return 0;
}