Submission #1096451

#	Time	Username	Problem	Language	Result	Execution time	Memory
1096451		ducdev	Triple Jump (JOI19_jumps)	C++14	19 / 100	277 ms	244124 KiB

jumps

#include <bits/stdc++.h>

using namespace std;

#define ll long long
const int MXN = 5e3;

int n , q;
ll a[MXN + 5] , maxVals[MXN + 5][MXN + 5];
ll dp[MXN + 5][MXN + 5];

void precompute(){
    for (int i = 1; i <= n ;i++){
        for (int j = i; j <= n ;j++){
            maxVals[i][j] = max(maxVals[i][j - 1] , a[j]);
        }
    }

    for (int l = n - 2;l >= 1; l--){
        for (int r = l + 2 ; r <= n ;r++){
            dp[l][r] = max({dp[l + 1][r] , dp[l][r - 1] , a[l] + a[r] + maxVals[l + 1][(r + l) / 2]});
        }
    }
}

signed main() {
    cin.tie(0)->ios_base::sync_with_stdio(0);
    cin >> n;
    for (int i = 1; i<= n ;i++) cin >> a[i];
    precompute();
    cin >> q;
    while(q--){
        int l , r; cin >> l >> r;
        cout << dp[l][r] <<'\n';
     }
}
//aaca
//aaac

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