제출 #401981

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
401981		blue	A Difficult(y) Choice (BOI21_books)	C++17	컴파일 에러	0 ms	0 KiB

books

#include "books.h"
#include <vector>
#include <algorithm>
using namespace std;

long long n;
long long k;
long long a;

vector<long long> diff(100001);

vector<int> res;
long long curr_sum = 0;

int L, R;

void res_search(long long l, long long books)
{
    // cerr << "rs " << l << ' ' << books << '\n';


    res.push_back(l);
    curr_sum += diff[l];

    if(books-1 == 0)
    {
        if(a <= curr_sum && curr_sum <= 2*a)
            answer(res);

        return;
    }

    for(long long r = l+1; r <= R; r++)
        res_search(r, books-1);

}



void binary_search(long long l, long long r)
{
    // cerr << "bs " << l << ' ' << r << '\n';
    if(l == r)
    {
        // L = max(1LL, l-k+1);
        // R = min(n, r+k);
        L = 1;
        R = N;
        for(long long i = L; i <= R; i++)
            diff[i] = skim(i);

        res_search(L, k);
        impossible();
    }
    else
    {
        long long m = (l+r)/2 + 1;
        if(k*skim(m) <= a*2)
            return binary_search(m, r);
        else
            return binary_search(l, m-1);
    }
}


       //books, choice size, limit,  skim limit
void solve(int N, int K, long long A, int S)
{
    for(int i = 1; i <= N; i++)
        skim(i);
    n = N;
    k = K;
    a = A;

    binary_search(1LL, n);
}

컴파일 시 표준 에러 (stderr) 메시지

books.cpp: In function 'void binary_search(long long int, long long int)':
books.cpp:48:13: error: 'N' was not declared in this scope
   48 |         R = N;
      |             ^