Submission #120406

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
120406	2019-06-24 11:42:16	nxteru	Cave (IOI13_cave)	C++14	100 / 100	477 ms	640 KiB

cave

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#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
#define PB push_back
int n,ans[5005],k,s[5005];
void exploreCave(int N) {
  n=N;
  for(int i=0;i<n;i++)ans[i]=-1;
  while(1){
    vector<int>x;
    for(int i=0;i<n;i++)if(ans[i]==-1)x.PB(i);
    if(x.size()==0)break;
    int p=tryCombination(s);
    if(p==-1||p>k)p=1;
    else p=0;
    while(x.size()>1){
      for(int i=0;i<x.size()/2;i++)s[x[i]]^=1;
      int q=tryCombination(s);
      if(q==-1||q>k)q=1;
      else q=0;
      vector<int>y;
      if(p==q)for(int i=x.size()/2;i<x.size();i++)y.PB(x[i]);
      else for(int i=0;i<x.size()/2;i++)y.PB(x[i]);
      x.clear();
      for(int i=0;i<y.size();i++)x.PB(y[i]);
      p=q;
    }
    ans[x[0]]=k++;
    if(p==0)s[x[0]]^=1;
  }
 
 
הההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההההה
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Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=0;i<x.size()/2;i++)s[x[i]]^=1;
                ~^~~~~~~~~~~
cave.cpp:22:34: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    if(p==q)for(int i=x.size()/2;i<x.size();i++)y.PB(x[i]);
                                 ~^~~~~~~~~
cave.cpp:23:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    else for(int i=0;i<x.size()/2;i++)y.PB(x[i]);
                     ~^~~~~~~~~~~
cave.cpp:25:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for(int i=0;i<y.size();i++)x.PB(y[i]);
                ~^~~~~~~~~

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