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답안 #495573

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
495573 2021-12-19T11:18:32 Z 600Mihnea 3단 점프 (JOI19_jumps) C++17
5 / 100
 4000 ms 14964 KB 
#include <bits/stdc++.h>

using namespace std;

const int N = (int) 5e5 + 7;
const int K = 19;
const int INF = (int) 1e9 + 7;
int n;
int q;
int a[N];
int lg[N];
int maxA[K][N];

int getMaxA(int l, int r) {
  if (l > r) {
    return -INF;
  }
  assert(1 <= l && l <= r && r <= n);
  int k = lg[r - l + 1];
  return max(maxA[k][l], maxA[k][r - (1 << k) + 1]);
}

signed main() {
  ios::sync_with_stdio(0); cin.tie(0);

  //freopen ("input", "r", stdin);


  cin >> n;
  for (int i = 2; i <= n; i++) {
    lg[i] = lg[i / 2] + 1;
  }
  for (int i = 1; i <= n; i++) {
    cin >> a[i];
    maxA[0][i] = a[i];
  }
  for (int k = 1; (1 << k) <= n; k++) {
    for (int i = 1; i + (1 << k) - 1 <= n; i++) {
      maxA[k][i] = max(maxA[k - 1][i], maxA[k - 1][i + (1 << (k - 1))]);
    }
  }

  cin >> q;
  for (int iq = 1; iq <= q; iq++) {
    int l, r, best = 0;
    cin >> l >> r;
    for (int i = l; i <= r; i++) {
      for (int j = i + 1; j <= r; j++) {
        int minK = 2 * j - i;
        int maxK = r;

        best = max(best, a[i] + a[j] + getMaxA(minK, maxK));
      }
    }
    cout << best << "\n";
  }


  return 0;
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 320 KB Output is correct

Subtask #2
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Execution timed out 4051 ms 912 KB Time limit exceeded
12 Halted 0 ms 0 KB -

Subtask #3
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 4091 ms 14964 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #4
0 / 54.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 332 KB Output is correct
2 Correct 1 ms 332 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 300 KB Output is correct
5 Correct 1 ms 316 KB Output is correct
6 Correct 1 ms 320 KB Output is correct
7 Correct 1 ms 332 KB Output is correct
8 Correct 1 ms 320 KB Output is correct
9 Correct 1 ms 316 KB Output is correct
10 Correct 1 ms 320 KB Output is correct
11 Execution timed out 4051 ms 912 KB Time limit exceeded
12 Halted 0 ms 0 KB -