Submission #52136

#	Time	Username	Problem	Language	Result	Execution time	Memory
52136		rondojim	Cave (IOI13_cave)	C++17	0 / 100	33 ms	544 KiB

cave

#include "cave.h"

const int MAXN = 5e3 + 5;

int bit[MAXN], door[MAXN], vis[MAXN];

void exploreCave(int n){
  for(int i=0; i<n; ++i){
    int ret = tryCombination(bit), lo = 0, hi = n - 1, mid, pos;
    while(lo < hi){
      mid = (lo + hi)>>1;
      for(int j=lo; j<=mid; ++j) if(!vis[j]) bit[j] ^= 1;
      pos = ret;
      ret = tryCombination(bit);
      if(pos == i || ret == i) hi = mid;
      else lo = mid + 1;
    }
    if(ret == i) bit[lo] ^= 1;
    door[lo] = i, vis[lo] = 1;
  }
  answer(bit, door);
}

• Subtask 1: 0 / 12
• Subtask 2: 0 / 13
• Subtask 3: 0 / 21
• Subtask 4: 0 / 30
• Subtask 5: 0 / 24