import std;
void main(){
  auto x = readln.chomp.to!int;
  switch(x){
    case 3:
    case 4:
    case 5:
      writeln("spring");
      break;
    case 6:
    case 7:
    case 8:
      writeln("summer");
      break;
    case 9:
    case 10:
    case 11:
      writeln("fall");
      break;
    default:
      writeln("winter");
  }
}