Submission #574775

#	Time	Username	Problem	Language	Result	Execution time	Memory
574775		Dos	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	2 ms	208 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.
//

void solve(int N, int K, long long A, int S) {
    // TODO implement this function

    int l, r;
    l = 1;
    r = N;

    //int firstBook = INT_MAX;

    while(l < r)
    {
        int mid = (l+r)/2;

        long long sum = skim(mid);


        for(int i = mid+1; i < mid + K; i++)
        {
            if(i > N)
            {
                impossible();
                return;
            }
            sum += skim(i);
        }

        if(sum < A)
        {
            l = mid+1;
        } else if(sum > 2*A)
        {
            r = mid - 1;
        } else
        {
            vector<int> ans;
            for(int i = mid; i < mid + K; i++)
            {
                ans.push_back(i);
            }

            answer(ans);
        }
    }

    impossible();


}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 15
• Subtask 3: 0 / 10
• Subtask 4: 0 / 15
• Subtask 5: 0 / 15
• Subtask 6: 0 / 20
• Subtask 7: 0 / 20