Submission #376233

#	Time	Username	Problem	Language	Result	Execution time	Memory
376233		ijxjdjd	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	100 / 100	1753 ms	93840 KiB

sortbooks

#include <bits/stdc++.h>
#define FR(i, N) for (int i = 0; i < int(N); i++)
#define all(x) begin(x), end(x)

using namespace std;

using ll = long long;

const int MAXN = (int)(1e6) + 5;
struct Query {
    int l, i, k;
};
int arr[MAXN];
bool ans[MAXN];
vector<Query> qs[MAXN];

int seg[4*MAXN];
void upd(int i, int val, int n = 1, int tl = 0, int tr = MAXN-1) {
    if (tl == tr) {
        seg[n] = val;
    }
    else {
        int tm = (tl + tr)/2;
        if (i <= tm) {
            upd(i, val, 2*n, tl, tm);
        }
        else {
            upd(i, val, 2*n+1, tm+1, tr);
        }
        seg[n] = max(seg[2*n], seg[2*n+1]);
    }
}
int query(int l, int r, int n = 1, int tl = 0, int tr = MAXN-1) {
    if (l > tr || r < tl) {
        return 0;
    }
    else if (l <= tl && tr <= r) {
        return seg[n];
    }
    else {
        int tm = (tl + tr)/2;
        return max(query(l, r, 2*n, tl, tm), query(l, r, 2*n+1, tm+1, tr));
    }
}
int main() {
	cin.tie(0);
	cin.sync_with_stdio(0);
	int N, M;
	cin >> N >> M;
	FR(i, N) cin >> arr[i];
	deque<pair<int, int>> deq;
	deq.push_back({arr[0], 0});
	FR(i, M) {
        int l, r, k;
        cin >> l >> r >> k;
        l--, r--;
        qs[r].push_back({l, i, k});
	}
	for (int i = 0; i < N; i++) {
        while (deq.size() && deq.back().first <= arr[i]) {
            deq.pop_back();
        }
        if (deq.size()) {
            upd(deq.back().second, deq.back().first+arr[i]);
        }
        deq.push_back({arr[i], i});
        for (Query q : qs[i]) {
            ans[q.i] = (query(q.l, i) <= q.k);
        }
	}
	for (int i = 0; i < M; i++) {
        cout << ans[i] << '\n';
	}
	return 0;
}

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