Submission #1013024

#	Time	Username	Problem	Language	Result	Execution time	Memory
1013024		Alihan_8	Triple Jump (JOI19_jumps)	C++17	19 / 100	246 ms	524288 KiB

jumps

#include <bits/stdc++.h>

using namespace std;

#define all(x) x.begin(), x.end()
#define ar array
#define pb push_back
#define ln '\n'
#define int long long

using i64 = long long;

template <class F, class _S>
bool chmin(F &u, const _S &v){
    bool flag = false;
    if ( u > v ){
        u = v; flag |= true;
    }
    return flag;
}

template <class F, class _S>
bool chmax(F &u, const _S &v){
    bool flag = false;
    if ( u < v ){
        u = v; flag |= true;
    }
    return flag;
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);

    int n; cin >> n;

    vector <int> a(n + 1);

    for ( int i = 1; i <= n; i++ ){
        cin >> a[i];
    }

    vector <vector<int>> dp(n + 2, vector <int> (n + 2));

    for ( int i = n - 2; i > 0; i-- ){
        int k = i + 1, mx = 0;

        for ( int j = i + 2; j <= n; j++ ){
            dp[i][j] = max(dp[i + 1][j], dp[i][j - 1]);

            while ( k < j && k - i <= j - k ){
                chmax(mx, a[k]);

                k++;
            }

            chmax(dp[i][j], mx + a[i] + a[j]);
        }
    }

    int q; cin >> q;

    while ( q-- ){
        int l, r; cin >> l >> r;

        cout << dp[l][r] << ln;
    }

    cout << '\n';
}

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