Submission #574804

#	Time	Username	Problem	Language	Result	Execution time	Memory
574804		RealSnake	A Difficult(y) Choice (BOI21_books)	C++14	0 / 100	4 ms	1060 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<ll> 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);
            if(it != s.end()) {
                sum += *it;
                if(sum <= 2 * A) {
                    ans.push_back(i);
                    ans.push_back(j);
                    ans.push_back(*it);
                    answer(ans);
                    return;
                }
            }
        }
        s.insert(arr[i]);
    }
    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