Submission #892684

#	Time	Username	Problem	Language	Result	Execution time	Memory
892684		Trisanu_Das	Prisoner Challenge (IOI22_prison)	C++17	56 / 100	11 ms	1324 KiB

prison

#include <bits/stdc++.h>
using namespace std;
 
vector<vector<int> > devise_strategy(int N) {
  vector<vector<int> > ans(27, vector<int> (N + 1));
  for(int i = 0; i < 27; i++) ans[i][0] = ((i + 1) >> 1) & 1;
  for(int i = 0; i < 27; i++) {
    for(int j = 1; j <= N; j++) {
      int ex = (i + 1) >> 1, case_ = i & 1;
      if((!!(j & (1 << (13 - ex)))) ^ case_) ans[i][j] = (case_ ^ (ex & 1)) ? -1 : -2;
      else ans[i][j] = min(2 * (ex + 1) - !!(j & (1 << (13 - ex - 1))), 26);
    }
  }
  return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 46 / 90