题解 | 四季

#include <iostream>
using namespace std;

int main (){
    int YM = 0 ;
    cin >> YM ;
    int e = YM % 10;
    int s = YM % 100 / 10;
    int season = 10*s + e ;
    if (season <= 5){
        if ( season >= 3 ){
            cout << "spring" << endl;
        }
        else {
            cout << "winter" << endl;
        }
    }
    else {
        if ( season <= 8 ){
            cout << "summer" <<endl;
        }
        else {
            if ( season != 12 ){
                cout << "autumn" << endl;
            }
            else {
                cout << "winter" << endl;
            }
        }
    }
    return 0 ;
}