Submission #1009125

#	Time	Username	Problem	Language	Result	Execution time	Memory
1009125		ALTAKEXE	Aliens (IOI07_aliens)	C++17	0 / 100	2 ms	436 KiB

aliens

#include <iostream>
#include <vector>
#include <cmath>
using namespace std;
void flush()
{
  cout.flush();
}
bool examine(int x, int y)
{
  cout << "examine " << x << " " << y << endl;
  flush();
  string response;
  cin >> response;
  return response == "true";
}

int main()
{
  int N, X0, Y0;
  cin >> N >> X0 >> Y0;
  int M = 3;
  int low = 3, high = N;
  while (low <= high)
  {
    int mid = (low + high) / 2;
    bool found = true;
    for (int i = -mid / 2; i <= mid / 2; i++)
    {
      for (int j = -mid / 2; j <= mid / 2; j++)
      {
        int x = X0 + i * mid;
        int y = Y0 + j * mid;
        if (x < 1 || x > N || y < 1 || y > N || !examine(x, y))
        {
          found = false;
          break;
        }
      }
      if (!found)
        break;
    }
    if (found)
    {
      M = mid;
      break;
    }
    high = mid - 1;
  }
  int offset = (M * 5) / 2;
  int XC = X0 + offset;
  int YC = Y0 + offset;
  cout << "solution " << XC << " " << YC << endl;
  flush();
  return 0;
}

• Subtask 1: 0 / 10
• Subtask 2: 0 / 10
• Subtask 3: 0 / 10
• Subtask 4: 0 / 10
• Subtask 5: 0 / 10
• Subtask 6: 0 / 10
• Subtask 7: 0 / 10
• Subtask 8: 0 / 10
• Subtask 9: 0 / 10
• Subtask 10: 0 / 10