Submission #1013000

#	Time	Username	Problem	Language	Result	Execution time	Memory
1013000		Nurislam	Triple Jump (JOI19_jumps)	C++17	0 / 100	14 ms	2908 KiB

jumps

#include <bits/stdc++.h>

using namespace std;

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

const int N = 6000;
int sp[25][N], ans[N][N];

int get(int l, int r){
	int bt = __lg(r-l);
	return max(sp[bt][l], sp[bt][r-(1<<bt)+1]);
};

void solve(){
	int n, q;
	cin >> n;
	for(int i = 1; i <= n; i++){
		cin >> sp[0][i];
	}
	
	cin >> q;
	vector<pair<int,int> > qu(q);
	
	for(auto&[l,r]:qu)cin >> l >> r;
	
	for(int i = 1; i < 24; i++){
		int len = (1 << (i-1));
		for(int j = 1; j <= n; j++){
			sp[i][j] = max(sp[i-1][j], sp[i-1][min(n,j+len)]);
		}
	}
	for(int i = 0; i <= n; i++){
		for(int j = 0; j <= n; j++){
			ans[i][j] = 0;
		}
	}
	for(int i = 1; i <= n; i++){
		for(int j = i+2; j <= n; j++){
			int mid = i + ((j-i) >> 1);
			ans[i][j] = sp[0][i] + sp[0][j] + get(i+1, mid);
			ans[i][j] = max(ans[i][j], ans[i][j-1]);
		}
	}
	for(int j = n; j > 0; j--){
		for(int i = j-1; i > 0; i--){
			ans[i][j] = max(ans[i][j], ans[i+1][j]);
		}
	}
	for(auto [l, r] :qu)cout << ans[l][r] << '\n';
		
}

signed main(){
    ios_base::sync_with_stdio(false);
    cin.tie(nullptr);
    int t = 1; 
    //cin >> t;
    while ( t-- )solve();
    cout << '\n';
}

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