oj.uz

답안 #972656

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
972656 2024-04-30T20:04:26 Z OAleksa 3단 점프 (JOI19_jumps) C++14
32 / 100
 4000 ms 8404 KB 
#include <bits/stdc++.h>
#define f first
#define s second
#define int long long
using namespace std;

signed main() {
  ios::sync_with_stdio(false);
  cin.tie(0);
  cout.tie(0);
  int tt = 1;
  //cin >> tt;
  while (tt--) {
		int n;
		cin >> n;
		vector<int> a(n);
		for (int i = 0;i < n;i++) 
			cin >> a[i];
		vector<int> ll(n), rr(n);
		vector<int> st;
		for (int i = 0;i < n;i++) {
			while (!st.empty() && a[st.back()] < a[i])
				st.pop_back();
			if (!st.empty())
				ll[i] = st.back();
			else
				ll[i] = -1;
			st.push_back(i);
		}
		st.clear();
		for (int i = n - 1;i >= 0;i--) {
			while (!st.empty() && a[st.back()] < a[i])
				st.pop_back();
			if (!st.empty())
				rr[i] = st.back();
			else
				rr[i] = -1;
			st.push_back(i);
		}
		int q;
		cin >> q;
		while (q--) {
			int l, r;
			cin >> l >> r;
			--l, --r;
			vector<int> p(n + 1);
			for (int i = r;i >= l;i--)
				p[i] = max(p[i + 1], a[i]);
			int ans = 0;
			for (int i = l;i <= r;i++) {
				if (rr[i] == -1 || rr[i] > r)
					continue;
				int x = rr[i] - i;
				int j = rr[i] + x;
				if (j <= r)
					ans = max(ans, a[i] + a[rr[i]] + p[j]);
			}
			for (int i = l;i <= r;i++) {
				if (ll[i] == -1 || ll[i] < l)	
					continue;
				int x = i - ll[i];
				int j = i + x;
				if (j <= r)
					ans = max(ans, a[i] + a[ll[i]] + p[j]);
			}
			cout << ans << '\n';
		}
  }
  return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 756 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 756 KB Output is correct
11 Execution timed out 4057 ms 7060 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
27.0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 22 ms 6488 KB Output is correct
2 Correct 21 ms 8404 KB Output is correct
3 Correct 19 ms 8400 KB Output is correct
4 Correct 21 ms 6492 KB Output is correct
5 Correct 21 ms 6648 KB Output is correct
6 Correct 18 ms 6492 KB Output is correct
7 Correct 17 ms 6640 KB Output is correct
8 Correct 17 ms 6644 KB Output is correct
9 Correct 19 ms 6492 KB Output is correct

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 344 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 0 ms 348 KB Output is correct
10 Correct 1 ms 756 KB Output is correct
11 Execution timed out 4057 ms 7060 KB Time limit exceeded
12 Halted 0 ms 0 KB -