Submission #591974

#	Time	Username	Problem	Language	Result	Execution time	Memory
591974		piOOE	Fire (JOI20_ho_t5)	C++17	8 / 100	1086 ms	21756 KiB

ho_t5

#include <bits/stdc++.h>

using namespace std;

using ll = long long;

template <typename T, class F = function<T(const T&, const T&)>>
class SparseTable {
public:
    int n;
    vector<vector<T>> st;
    F func;

    SparseTable(const vector<T>& a, const F& f) : func(f) {
        n = static_cast<int>(a.size());
        int max_log = 32 - __builtin_clz(n);
        st.resize(max_log);
        st[0] = a;
        for (int j = 1; j < max_log; ++j) {
            st[j].resize(n - (1 << j) + 1);
            for (int i = 0; i <= n - (1 << j); ++i) {
                st[j][i] = func(st[j - 1][i], st[j - 1][i + (1 << (j - 1))]);
            }
        }
    }

    SparseTable() = default;

    T get(int L, int R) const {
        assert(0 <= L && L < R && R <= n);
        int lg = __lg(R - L);
        return func(st[lg][L], st[lg][R - (1 << lg)]);
    }
};

int main() {
    ios::sync_with_stdio(false);
    cin.tie(nullptr);
    int n, q;
    cin >> n >> q;
    vector<int> s(n);
    for (int i = 0; i < n; ++i) {
        cin >> s[i];
    }
    SparseTable<int> st(s, [](int i, int j) {return max(i, j);});
    while (q--) {
        int t, l, r;
        cin >> t >> l >> r;
        ll ans = 0;
        for (int i = l - 1; i < r; ++i) {
            ans += st.get(max(0, i - t), i + 1);
        }
        cout << ans << '\n';
    }
    return 0;
}

• Subtask 1: 1 / 1
• Subtask 2: 0 / 6
• Subtask 3: 7 / 7
• Subtask 4: 0 / 6
• Subtask 5: 0 / 80