Submission #491436

#	Time	Username	Problem	Language	Result	Execution time	Memory
491436		tempus	A Difficult(y) Choice (BOI21_books)	C++14	Compilation error	0 ms	0 KiB

books

#include <bits/stdc++.h>

#include "books.h"

using namespace std;
#define ll long long
//
// --- 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.
//

void solve(int N, int K, long long A, int S) {
    int nw = 0;
    for (int i = 20; i >= 0; -- i) {
    	int q = nw + (1 << i);
    	ll X = skim(q);
    	if (A <= X && X <= A * 2) {
    		answer({q});
    	}
    	else if (X < A) {
    		nw = q;
    	}
    }
    if (nw < k) {
    	impossible();
    }
    ll sum = 0;
    vector <int> ans;
    for (int i = nw; i >= nw - k + 1; -- i) {
    	ans.push_back(i);
    	sum += skim(i);
    	if (A <= sum) answer(ans);
    }
    impossible();
}

Compilation message (stderr)

books.cpp: In function 'void solve(int, int, long long int, int)':
books.cpp:29:14: error: 'k' was not declared in this scope
   29 |     if (nw < k) {
      |              ^
books.cpp:34:32: error: 'k' was not declared in this scope
   34 |     for (int i = nw; i >= nw - k + 1; -- i) {
      |                                ^