#include <iostream>
using namespace std;
int main() {
int month;
cin >> month;
if(month>12||month<1)
cout << "不合法";
else if(month ==1||month ==2||month ==12)
cout <<"冬季";
else if (month>=9)
cout <<"秋季";
else if (month>=6)
cout <<"夏季";
else
cout <<"春季";
return 0;
}

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