Submission #1017931

#	Time	Username	Problem	Language	Result	Execution time	Memory
1017931		codefox	Hedgehog Daniyar and Algorithms (IZhO19_sortbooks)	C++14	34 / 100	676 ms	262144 KiB

sortbooks

#include <bits/stdc++.h>

using namespace std;

#define pii pair<int, int>
#define pipi pair<pii, pii>

int N = 1<<19;
//20? maybe 18
vector<int> bin(2*N, 0);
vector<set<int>> bmm(2*N);
int sol = 0;

int query(int curr, int l, int r, int a, int b, int mx)
{
    if (l >= b || r <= a) return -1e9;
    if (a <= l && r <= b)
    {
        sol = max(sol, bin[curr]);
        if (bmm[curr].lower_bound(mx)!= bmm[curr].begin())
        {
            int last = *(--bmm[curr].lower_bound(mx));
            sol = max(sol, mx+last);
        }
        return *(--bmm[curr].end());
    }
    int m = (l+r)/2;
    mx = max(mx, query(curr*2, l, m, a, b, mx));
    mx = max(mx, query(curr*2+1, m, r, a, b, mx));
    return mx;
}

int main()
{
    int n, q;
    cin >> n >> q;

    for (int i = 0; i < n; i++)
    {
        int a;
        cin >> a;
        bmm[i+N].insert(a);
    }
    for (int i = n; i < N; i++) bmm[i+N].insert(1e9);
    for (int i = N-1; i >0; i--)
    {
        for (int ele:bmm[i*2]) bmm[i].insert(ele);
        for (int ele:bmm[i*2+1]) bmm[i].insert(ele);
        bin[i] = max(bin[i*2], bin[i*2+1]);
        int mx = *(--bmm[i*2].end());
        if (bmm[i*2+1].lower_bound(mx)!=bmm[i*2+1].begin())
        {
            bin[i] = max(bin[i], mx+*(--bmm[i*2+1].lower_bound(mx)));
        }
    }

    while(q--)
    {
        int l, r, mood;
        cin >> l >> r >> mood;
        l--;
        sol=0;
        query(1, 0, N, l, r, -1e9);
        if (sol <= mood) cout << "1\n";
        else cout << "0\n";
    }

    return 0;
}

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