제출 #879036

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
879036		The_Samurai	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++17	0 / 100	963 ms	119792 KiB

sortbooks

#include "bits/stdc++.h"
using namespace std;
using ll = long long;
const int inf = 1e9;
const int lg = 20;

void solve() {
    int n, q;
    cin >> n >> q;
    vector<int> a(n + 1);
    for (int i = 1; i <= n; i++) cin >> a[i];
    stack<int> st;
    vector jump(lg, vector(n + 1, 0));
    for (int i = 1; i <= n; i++) {
        while (!st.empty() and a[st.top()] <= a[i]) st.pop();
        jump[0][i] = st.empty() ? 0 : st.top();
        st.push(i);
    }
    for (int i = 1; i <= n; i--) {
        if (!jump[0][i]) break;
        for (int j = 1; j < lg; j++) {
            jump[j][i] = jump[j - 1][jump[j - 1][i]];
            if (!jump[j][i]) break;
        }
    }
    vector<int> left(n + 1);
    for (int i = 1; i <= n; i++) left[i] = jump[0][i] ? i : left[i - 1];
    while (q--) {
        int l, r, k;
        cin >> l >> r >> k;
        r = left[r];
        int ans = 0;
        for (int i = lg - 1; i >= 0; i--) {
            if (!jump[i][r] or jump[i][r] < l) continue;
            ans = a[jump[i][r]] + (i > 0 ? a[jump[i - 1][r]] : a[r]);
            r = jump[i][r];
        }
        if (!jump[0][r] and jump[0][r] >= l) {
            ans = a[jump[0][r]] + a[r];
        }
        cout << (int) (ans <= k) << '\n';
    }
}

int main() {
    cin.tie(0)->sync_with_stdio(false);
#ifdef sunnatov
    freopen("input.txt", "r", stdin);
    freopen("output.txt", "w", stdout);
#endif

    int queries = 1;
//    cin >> queries;

    for (int test_case = 1; test_case <= queries; test_case++) {
#ifdef sunnatov
        cout << "Test case: " << test_case << endl;
#endif
        solve();
        cout << '\n';
    }
}

• Subtask 1: 0 / 8
• Subtask 2: 0 / 9
• Subtask 3: 0 / 13
• Subtask 4: 0 / 17
• Subtask 5: 0 / 30
• Subtask 6: 0 / 23