Submission #62835

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
62835	2018-07-30 12:25:31	mhnd	Cave (IOI13_cave)	C++14	100 / 100	420 ms	596 KiB

cave

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#include "cave.h"
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
const int N = 2e5+50;
const ll oo = 1e18;
const ll mod = 1e9+7;
int s[5010],d[5010],tmp[5010];
bool vis[5010];
void exploreCave(int n){
    for(int i=0;i<n;i++){
      int md,lo=0,hi=n-1,ans=0;
      int to = tryCombination(s);
      int t = (to>i || to==-1)?0:1;
      while(lo!=hi){
        md = (lo+hi)/2;
        for(int i=lo;i<=md;i++)if(!vis[i])s[i]=!s[i];
        to = tryCombination(s);
        for(int i=lo;i<=md;i++)if(!vis[i])s[i]=!s[i];
        int c = (to>i || to==-1)?0:1;
        if(c != t)hi = md;
        else lo = md+1;
      }
      s[lo]=t;
      d[lo]=i;
 
 
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Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:17:25: warning: unused variable 'ans' [-Wunused-variable]
      int md,lo=0,hi=n-1,ans=0;
                         ^~~

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