Submission #101964

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
101964	2019-03-21 07:57:13	Plurm	Cave (IOI13_cave)	C++11	100 / 100	1342 ms	596 KiB

cave

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#include "cave.h"
#include <cstdio>
#include <cstring>
void exploreCave(int N) {
  int forced[N];
  memset(forced,-1,sizeof(forced));
  int conn[N];
  int now[N];
  for(int i = 0; i < N; i++){
    for(int j = 0; j < N; j++){
      if(forced[j] != -1) now[j] = forced[j];
      else now[j] = 0;
    }
    int res = tryCombination(now);
    if(res > i || res == -1){
      int lo = 0;
      int hi = N-1;
      int mid;
      while(lo < hi){
        mid = (lo + hi)/2;
        for(int j = 0; j <= mid; j++){
          now[j] = 1;
          if(forced[j] != -1) now[j] = forced[j];
        }
        for(int j = mid+1; j <= N; j++){
          now[j] = 0;
          if(forced[j] != -1) now[j] = forced[j];
        }
        res = tryCombination(now);
        if(res == i){
 
 
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• Subtask 1: 12 / 12
• Subtask 2: 13 / 13
• Subtask 3: 21 / 21
• Subtask 4: 30 / 30
• Subtask 5: 24 / 24