Submission #16650

#	Time	Username	Problem	Language	Result	Execution time	Memory
16650		eaststar	Cave (IOI13_cave)	C++14	0 / 100	48 ms	464 KiB

cave

#include "cave.h"
int a[5010],b[5010],chk[5010];
void exploreCave(int n){
  int i,j,s,e,m,t,p;
  for(i=0;i<n;++i){
    t=tryCombination(a);
    s=0,e=n-1;
    while(s<e){
      m=(s+e)/2;
      for(j=s;j<=m;++j)if(!chk[j])a[j]=!a[j];
      (p==i)^(t=tryCombination(a)==i)?s=m+1:e=m;
    }
    a[s]=!a[s],b[s]=i,chk[s]=1;
  }
  answer(a,b);
}

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