Submission #942868

#	Time	Username	Problem	Language	Result	Execution time	Memory
942868		beepbeepsheep	A Difficult(y) Choice (BOI21_books)	C++17	Compilation error	0 ms	0 KiB

books

#include <bits/stdc++.h>

#include "books.h"

using namespace std;
//
// --- Sample implementation for the task books ---
//
// To compile this program with the sample grader, place:
//     books.h books_sample.cpp sample_grader.cpp
// in a single folder and run:
//     g++ books_sample.cpp sample_grader.cpp
// in this folder.
//
#define ll long long
void solve(int N, int K, long long A, int S) {
    // TODO implement this function
    ll s=1,e=N;
    for (int i=s;i<=e;i++){
        arr[i]=skim(i);
    }
    if (e-s+1<K){
        impossible();
        return;
    }
    vector<int> v;
    for (int i=s;i<=e-K+1;i++){
        ll tot=0;
        for (int j=i;j<=i+K-1;j++){
            v.emplace_back(j);
            tot+=arr[j];
        }
        //cerr<<endl<<i<<' '<<i+K-1<<' '<<tot<<endl;
        if (tot>=A && tot<=2*A){
            answer(v);
            return;
        }
        v.clear();
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:20:9: error: 'arr' was not declared in this scope
   20 |         arr[i]=skim(i);
      |         ^~~
books.cpp:31:18: error: 'arr' was not declared in this scope
   31 |             tot+=arr[j];
      |                  ^~~