Submission #1055540

#	Time	Username	Problem	Language	Result	Execution time	Memory
1055540		MrPavlito	Cave (IOI13_cave)	C++17	0 / 100	65 ms	600 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
//#define int long long
#define pb push_back
#define mp make_pair
#define all(x) (x).begin(),(x).end()
#define fi first
#define sc second
#define endl "\n"
#define pii pair<int,int>

using namespace std;

const int MAXN = 5e3+5;
const int mod7 = 1e9+7;
const long long inf = 1e18;


void exploreCave(int N) {
    int n = N;
    int trenutnacomb[n];
    int solved[n];
    for(int i=0; i<n; i++)trenutnacomb[i] = 0, solved[i] = 0;
    for(int i=0; i<n; i++)
    {
        int t = tryCombination(trenutnacomb);
        bool zatvorena = 1;
        if(t==-1 || t>i) zatvorena = 0;
        if(zatvorena)
        {
            int l = 0;
            int r = n-1;
            while(l<r)
            {
                int mid = l+r >> 1;
                int pre[n];
                for(int i=0; i<n; i++)pre[i] = trenutnacomb[i];
                for(int i=l; i<= mid; i++)if(!solved[i])trenutnacomb[i] ^= 1;
                int p = tryCombination(trenutnacomb);
                if(p== -1 || p > i)r = mid;
                else l = mid+1;
                for(int i=0; i<n; i++)pre[i] = trenutnacomb[i];
            }
            solved[i] = l;
            trenutnacomb[l] ^= 1;
        }
        else
        {
            int l = 0;
            int r = n-1;
            while(l<r)
            {
                int mid = l+r >> 1;
                int pre[n];
                for(int i=0; i<n; i++)pre[i] = trenutnacomb[i];
                for(int i=l; i<= mid; i++)if(!solved[i])trenutnacomb[i] ^= 1;
                int p = tryCombination(trenutnacomb);
                if(p == i)r = mid;
                else l = mid+1;
                for(int i=0; i<n; i++)pre[i] = trenutnacomb[i];
            }
            solved[i] = l;
            trenutnacomb[l] ^= 1;
        }
    }
    answer(trenutnacomb, solved);

}

Compilation message (stderr)

cave.cpp: In function 'void exploreCave(int)':
cave.cpp:35:28: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   35 |                 int mid = l+r >> 1;
      |                           ~^~
cave.cpp:36:21: warning: variable 'pre' set but not used [-Wunused-but-set-variable]
   36 |                 int pre[n];
      |                     ^~~
cave.cpp:53:28: warning: suggest parentheses around '+' inside '>>' [-Wparentheses]
   53 |                 int mid = l+r >> 1;
      |                           ~^~
cave.cpp:54:21: warning: variable 'pre' set but not used [-Wunused-but-set-variable]
   54 |                 int pre[n];
      |                     ^~~

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