Submission #832342

#	Time	Username	Problem	Language	Result	Execution time	Memory
832342		NothingXD	Prisoner Challenge (IOI22_prison)	C++17	65 / 100	10 ms	1108 KiB

prison

#include "prison.h"
#include <bits/stdc++.h>
 
using namespace std;
 
typedef long long ll;
typedef pair<int,int> pii;
typedef pair<ll,ll> pll;
 
void debug_out(){cerr << endl;}
template<typename Head, typename... Tail>
void debug_out(Head H, Tail... T){
	cerr << H << ' ';
	debug_out(T...);
}
 
#define debug(...) cerr << "(" << #__VA_ARGS__ << "): ", debug_out(__VA_ARGS__)
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define MP(x, y) make_pair(x, y)

const int maxn = 25;
const int lg = 13;
std::vector<std::vector<int>> devise_strategy(int N) {
//	debug(N);
  vector<vector<int>> ans;
  ans.resize(maxn);
  for (int i = 0; i < maxn; i++){
	  ans[i].resize(N+1);
	  int bit, val, bag;
	  if (i == 0){
		  bit = 13;
		  val = 0;
		  bag = 1;
	  }
	  else{
		  bit = (i+1)/2;
		  val = (i&1);
		  bag = (((i+1)/2)&1);
	  }
	 // debug(i, bit, val, bag);
	  ans[i][0] = bag;
///	  debug(i, 0, ans[i][0]);
	  for (int j = 1; j <= N; j++){
		  int tmp = ((j >> bit) & 1);
		  int rem = (1 << bit) - 1;
		  if (tmp < val){
			  ans[i][j] = -1 - bag;
		  }
		  else if (tmp > val){
			  ans[i][j] = -1 - (1-bag);
		  }
		  else if ((j & rem) == rem){
			  ans[i][j] = -1 - (1-bag);
		  }
		  else if ((j & rem) == 0){
			  ans[i][j] = -1 - bag;
		  }
		  else{
			  ans[i][j] = (bit-1) * 2 - ((j >> (bit-1)) & 1);
		  }
		//  debug(i, j, ans[i][j]);
	  }
  }
  return ans;
}

• Subtask 1: 5 / 5
• Subtask 2: 5 / 5
• Subtask 3: 55 / 90