#include <bits/stdc++.h>
using namespace std;
int main(){
  int X;
  cin >> X;
  if (3 <= X && X <= 5){
    cout << "spring" << endl;
  } else if (6 <= X && X <= 8){
    cout << "summer" << endl;
  } else if (9 <= X && X <= 11){
    cout << "fall" << endl;
  } else {
    cout << "winter" << endl;
  }
}