oj.uz

답안 #854922

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
854922 2023-09-29T12:05:57 Z vjudge1 3단 점프 (JOI19_jumps) C++17
5 / 100
 175 ms 524288 KB 
#include<bits/stdc++.h>
using namespace std;
#define int long long 
#define ll long long
#define pii pair<int,int>
#define F first
#define S second
#define endl '\n'
#define pb push_back
#define sz(a) (int)a.size()
#define all(a) a.begin(),a.end()
const int mod = 1e9 + 7;
const int N = 5010;
const ll inf = 1e18;
int mx[N][N];
int suf[N];
int a[N];
int ans[N][N];
int dp[N][N];
int32_t main(){
	ios_base::sync_with_stdio(0);cin.tie(0);
	int n;
	cin >> n;
	for (int i=1;i<=n;i++){
		cin >> a[i];
		mx[i][i] = a[i];
	}
	for (int i=1;i<=n;i++){
		for (int j=i+1;j<=n;j++){
			mx[i][j] = max(mx[i][j-1], mx[i][j]);
		}
	}
	for (int i=1;i<=n;i++){
		dp[i][i+1] = a[i]+a[i+1];
	}
	for (int i=1;i<=n;i++){
		for (int j=i+2;j<=n;j++){
			dp[i][j] = max(dp[i][j-1], a[j]+mx[i][j-1]);
		}
	}
	memset(mx, 0, sizeof(mx));
	for (int l=1;l<=n-1;l++){
		for (int r=l+1;r<=n;r++){
			int c = r + (r-l);
			if (c>n) break;
			suf[c] = max(dp[l][r], suf[c]);
		}
		for (int i=1;i<=n;i++){
			suf[i] = max(suf[i], suf[i-1]);
		}
		for (int r=l+2;r<=n;r++){
			ans[l][r] = max(ans[l][r-1], suf[r]+a[r]);
		}
		memset(suf, 0, sizeof(suf));
	}
	for (int i=1;i<=n;i++){
		for (int j=i;j>=1;j--){
			ans[j][i] = max(ans[j+1][i], ans[j][i]);
		}
	}
	int q;
	cin >> q;
	while (q--){
		int l, r;
		cin >> l >> r;
		cout << ans[l][r] << endl;
	}
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 197680 KB Output is correct
2 Correct 22 ms 202328 KB Output is correct
3 Correct 22 ms 202328 KB Output is correct
4 Correct 22 ms 202320 KB Output is correct
5 Correct 24 ms 202328 KB Output is correct
6 Correct 23 ms 202296 KB Output is correct
7 Correct 22 ms 202332 KB Output is correct
8 Correct 22 ms 202376 KB Output is correct
9 Correct 22 ms 202240 KB Output is correct
10 Correct 23 ms 202196 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 197680 KB Output is correct
2 Correct 22 ms 202328 KB Output is correct
3 Correct 22 ms 202328 KB Output is correct
4 Correct 22 ms 202320 KB Output is correct
5 Correct 24 ms 202328 KB Output is correct
6 Correct 23 ms 202296 KB Output is correct
7 Correct 22 ms 202332 KB Output is correct
8 Correct 22 ms 202376 KB Output is correct
9 Correct 22 ms 202240 KB Output is correct
10 Correct 23 ms 202196 KB Output is correct
11 Runtime error 175 ms 524288 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Runtime error 129 ms 321632 KB Execution killed with signal 11
2 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 197680 KB Output is correct
2 Correct 22 ms 202328 KB Output is correct
3 Correct 22 ms 202328 KB Output is correct
4 Correct 22 ms 202320 KB Output is correct
5 Correct 24 ms 202328 KB Output is correct
6 Correct 23 ms 202296 KB Output is correct
7 Correct 22 ms 202332 KB Output is correct
8 Correct 22 ms 202376 KB Output is correct
9 Correct 22 ms 202240 KB Output is correct
10 Correct 23 ms 202196 KB Output is correct
11 Runtime error 175 ms 524288 KB Execution killed with signal 9
12 Halted 0 ms 0 KB -