Submission #770463

#	Time	Username	Problem	Language	Result	Execution time	Memory
770463		Dan4Life	Triple Jump (JOI19_jumps)	C++17	0 / 100	4 ms	724 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,l,r; cin >> n;
	for(int i = 1; i <= n; i++) cin >> a[i];
	cin >> q;
	for(int i = 1,k=2; i <= n; i++,k=i+1)
		for(int j = i+2; j <= n; j++) while(2*k<=i+j) 
          	dp[i][j]=max(dp[i][j],a[k++]+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]);
			dp[i-1][j+1] = max(dp[i-1][j+1],dp[i][j]);
		}
	}
	while(q--) cin >> l >> r,cout <<dp[l][r] << "\n";
}

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