#include <iostream>
using namespace std;
int main() {
int month;
cin >> month;
// write your code here......
if(month > 12 or month < 1) cout << "不合法";
else if(month >= 3 and month <= 5) cout << "春季";
else if(month >= 6 and month <= 8) cout << "夏季";
else if(month >= 9 and month <= 11) cout << "秋季";
else if(month == 12 or month == 1 or month == 2)cout << "冬季";
return 0;
}

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