#include using namespace std;

int main() { int month; cin >> month; switch(month) { case 5: case 4: case 3: cout<<"春季"<<endl; break; case 8: case 7: case 6: cout<<"夏季"<<endl; break; case 11: case 10: case 9: cout<<"秋季"<<endl; break; case 12: case 2: case 1: cout<<"冬季"<<endl; break; default: cout<<"不合法"<<endl; } return 0; }