Submission #1174856

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
1174856	2025-03-27 13:18:31	trvhung	Cave (IOI13_cave)	C++20	Compilation error	0 ms	0 KiB

cave

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#include "cave.h"
void exploreCave(int N) {
  int sw[N], fx[N], ofSw[N];
  fill(fx, fx + N, -1);
  for (int d = 0; d < N; ++d) {
    for (int i = 0; i < N; ++i)
      sw[i] = fx[i] == -1 ? 0 : fx[i];
    int cur = tryCombination(sw);
    int l = 0, r = N - 1;
    while (l != r) {
      int mid = (l + r) >> 1;
      for (int i = l; i <= mid; ++i)
        sw[i] = fx[i] == -1 ? 1 : fx[i];
      int ask = tryCombination(sw);
      for (int i = l; i <= mid; ++i)
        sw[i] = fx[i] == -1 ? 0 : fx[i];
    
      if (ask == cur) 
        l = mid + 1;
      else
        r = mid;
    }
    fx[l] = (cur == d);
    ofSw[l] = d;
  }
 
 
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Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:5:9: error: 'fill' was not declared in this scope
    5 |         fill(fx, fx + N, -1);
      |         ^~~~