Submission #330927

#	Time	Username	Problem	Language	Result	Execution time	Memory
330927		jungsnow	Triple Jump (JOI19_jumps)	C++14	0 / 100	24 ms	3692 KiB

jumps

#include<bits/stdc++.h>

using namespace std;
using ll = long long;

const int maxn = 500100;

int N, A[maxn], Suf[maxn], Mx;
vector<int> pos;

int main() {
    ios::sync_with_stdio(0); cin.tie(0);
    cin >> N;
    for (int i = 1; i <= N; ++i) {
        cin >> A[i];
        Mx = max(Mx, A[i]);
    }
    int q; cin >> q >> q >> q;
    for (int i = N; i >= 1; --i) {
        if (A[i] == Mx) pos.push_back(i);
        Suf[i] = max(Suf[i + 1], A[i]);
    }
    reverse(pos.begin(), pos.end());
    int l = 0, Ans = 0;
    for (int i = 1; i <= N; ++i) {
        while (l + 1 < (int)pos.size() && pos[l] <= i) ++l;
        if (pos[l] <= i) break;
        int len = pos[l] - i;
        Ans = max(Ans, A[i] + Mx + Suf[pos[l] + len]);
    }
    l = 0;
    for (int i = 1; i <= N; ++i) {
        while (l + 1 < (int)pos.size() && pos[l + 1] < i) ++l;
        if (pos[l] >= i) continue;
        int len = i - pos[l];
        Ans = max(Ans, Mx + A[i] + Suf[i + len]);
    }
    cout << Ans << '\n';
    return 0;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 14
• Subtask 3: 0 / 27
• Subtask 4: 0 / 54