1057 : 토너먼트 [C++]

#include <iostream>

using namespace std;

int main()
{
 int Fighter[100000];
 int N, A, B;
 cin >> N >> A >> B;
 int Last = -1;
 int Round = 1;

 for (int i = 0; i < N; i++)
  Fighter[i] = 1;

 for (int i = 0; i < N; i++)
 {
  if (Last > -1 && Fighter[i] == 1)
  {
   if ((Last == A-1 && i == B-1) || (Last == B-1 && i == A-1))
    break;
   else if (Last == A-1 || Last == B-1)
   {
    Fighter[Last] = 1;
    Fighter[i] = 0;
   }
   else if (i == A-1 || i == B-1)
   {
    Fighter[Last] = 0;
    Fighter[i] = 1;
   }
   else
   {
    Fighter[Last] = 1;
    Fighter[i] = 0;
   }
   Last = -1;
  }
  else if (Fighter[i] == 1)
   Last = i;
  
  if (i == N - 1)
  {
   i = -1;
   Last = -1;
   Round++;
  }
 }

 cout << Round;
}