Submission #97634

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
97634	2019-02-17 14:52:24	tincamatei	Cave (IOI13_cave)	C++14	100 / 100	637 ms	640 KiB

cave

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#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
const int MAX_N = 5000;
vector<int> pos;
int combination[MAX_N];
int S[MAX_N], D[MAX_N];
void exploreCave(int N) {
  for(int i = 0; i < N; ++i)
    pos.push_back(i);
  
  for(int i = 0; i < N; ++i) {
    for(auto it: pos)
      combination[it] = 1;
    int rez = tryCombination(combination);
    bool correctState = false;
    if(rez == -1 || rez > i)
      correctState = true;
    int st = -1, dr = pos.size() - 1;
    while(dr - st > 1) {
      int mid = (st + dr) / 2;
      for(int i = 0; i <= mid; ++i)
        combination[pos[i]] = correctState;
      for(int i = mid + 1; i < pos.size(); ++i)
        combination[pos[i]] = 1 - correctState;
 
 
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Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:29:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i = mid + 1; i < pos.size(); ++i)
                         ~~^~~~~~~~~~~~

• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24