Submission #771084

#	Time	Username	Problem	Language	Result	Execution time	Memory
771084		Dan4Life	Triple Jump (JOI19_jumps)	C++17	19 / 100	882 ms	77056 KiB

jumps

#include <bits/stdc++.h>
using namespace std;
const int mxN = (int)5e3+10;
int a[mxN], dp[mxN][mxN];
 
int main(){
	int n, q; cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i];
	cin >> q;
	for(int i = 1; i <= n; i++){
		int k = i+1, mx = 0;
		for(int j = i+2; j <= n; j++){
			while(2*k<=i+j) mx = max(mx,a[k++]);
			dp[i][j]=mx+a[i]+a[j];
		}
	}
	for(int l = 1; l <= n; l++){
		for(int i=1,j=i+l-1; j<= n; i++,j++){
			dp[i][j+1] = max(dp[i][j+1],dp[i][j]);
			dp[i-1][j] = max(dp[i-1][j],dp[i][j]);
		}
	}
	while(q--){
		int l, r; cin >> l>> r;
		cout <<dp[l][r] << "\n";
	}
}

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