Submission #1320182

#	Time	Username	Problem	Language	Result	Execution time	Memory
1320182		yessimkhan	Cave (IOI13_cave)	C++20	Compilation error	0 ms	0 KiB

cave

#include "cave.h"
#include <bits/stdc++.h>
// solved by bekagg
#define ll long long
#define ent '\n'
#define pb push_back
#define all(x) x.begin(),x.end()
#define PRaim_bek_abi ios_base::sync_with_stdio(0);cin.tie(0);

using namespace std;

const int N = 5e5+5;
const int MOD = 1e9+7;

int d[N] , cnt , us[N] , s[N] , p;

void build(int tl , int tr){

    for (int i = tl; i <= tr; i++){
        if (us[i]) continue;
        s[i] = 1 - s[i];
    }

    int pos = tryCombination(s);

    if (pos == -1) pos = n;

    int tm = (tl + tr) / 2;

    if (pos == p){
        return;
    }

    else {
        if (tl == tr){
            us[tl] = 1;
            s[tl] = 1 - s[tl];
            cnt++;
        }
        else {
            build(tl , tm) , build(tm + 1 , tr);
        }
    }


}

void exploreCave(int n){
    while(cnt < n){

        p = tryCombination(s);

        if (p == -1) p = n;

        build(0 , n - 1);

    }

    for (int i = 0; i < n; i++){
        s[i] = 1 - s[i];
        int pos = tryCombination(s);
        d[i] = pos;
        s[i] = 1 - s[i];
    }

    answer(s , d);
}

Compilation message (stderr)

cave.cpp: In function 'void build(int, int)':
cave.cpp:26:26: error: 'n' was not declared in this scope
   26 |     if (pos == -1) pos = n;
      |                          ^