Submission #528687

#	Time	Username	Problem	Language	Result	Execution time	Memory
528687		79brue	A Difficult(y) Choice (BOI21_books)	C++14	10 / 100	2 ms	296 KiB

books

#include "books.h"
#include <bits/stdc++.h>

using namespace std;

typedef long long ll;

int n, k;
ll arr[100002];
int s, lim;

void solve(int N, int K, ll A, int S){
    n = N, k = K, s = S, lim = A;

//    for(int i=1; i<=n; i++) arr[i] = skim(i);

    int l=1, r=n-k+1;
    while(l<=r){
        int m = (l+r)>>1;
        ll sum = 0;
        for(int i=m; i<m+k; i++) sum += skim(i);

        if(sum > A+A) r=m-1;
        else if(sum < A) l=m+1;
        else{
            vector<int> v;
            for(int i=m; i<m+k; i++) v.push_back(i);
            answer(v);
            return;
        }
    }
    impossible();
}

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