Submission #30027

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
30027	2017-07-21 14:46:36	kavun	Cave (IOI13_cave)	C++14	100 / 100	418 ms	640 KiB

cave

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#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
int s[5010], d[5010], n;
bool mk[5010];
void change(int lo, int hi)
{
  int m = (lo + hi)/2;
  for(int i = lo; i <= m;i++)
    if(!mk[i])
      s[i] ^= 1;
}
void exploreCave(int N) {
  n = N;
  for(int i = 0; i < N; i++)
    {
      int lo = 0, hi = n-1;
      int ps = tryCombination(s);
      int open = i < ps || ps == -1 ? 0 : 1;
      int after;
      while(lo != hi)
  {
    int m = (lo + hi) / 2;
    change(lo,hi);
    int pos = tryCombination(s);
 
 
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• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24