제출 #574817

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
574817		RealSnake	A Difficult(y) Choice (BOI21_books)	C++14	5 / 100	2495 ms	976 KiB

books

#include "bits/stdc++.h"
using namespace std;
#include "books.h"

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
typedef tree<int, null_type, less<int>, rb_tree_tag, tree_order_statistics_node_update> ordered_set;

#define ll long long
#define mod 1000000007

void solve(int n, int k, ll A, int S) {
    // n <= 1000, s = n, k = 3;
    ll arr[n + 1];
    for(int i = 1; i <= n; i++)
        arr[i] = skim(i);
    vector<int> ans;
    set<pair<ll, int>> s;
    for(int i = n; i >= 1; i--) {
        for(int j = i - 1; j >= 1; j--) {
            ll sum = arr[i] + arr[j];
            auto it = s.lower_bound({A - sum, 0});
            if(it != s.end()) {
                pair<ll, int> p = *it;
                sum += p.first;
                if(sum <= 2 * A) {
                    ans.push_back(i);
                    ans.push_back(j);
                    ans.push_back(p.second);
                    answer(ans);
                    return;
                }
            }
        }
        s.insert({arr[i], i});
    }
    impossible();
}

• Subtask 1: 5 / 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