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Submission #833140

# Submission time Handle Problem Language Result Execution time Memory
833140 2023-08-22T02:14:27 Z veehz Feast (NOI19_feast) C++17
30 / 100
 97 ms 5416 KB 
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef long double ld;
#define pb push_back

int main() {
  int n, k;
  cin >> n >> k;
  vector<ll> a(n);
  for (int i = 0; i < n; i++) cin >> a[i];

  // subtask 1 a_i > 0
  if (*min_element(a.begin(), a.end()) >= 0) {
    cout << accumulate(a.begin(), a.end(), 0LL) << endl;
    return 0;
  }

  // subtask 2 at most one a_i < 0
  if (count_if(a.begin(), a.end(), [](ll x) { return x < 0; }) <= 1) {
    int pos =
        find_if(a.begin(), a.end(), [](ll x) { return x < 0; }) - a.begin();
    ll mx = 0;
    mx = max(mx, accumulate(a.begin(), a.begin() + pos, 0LL));
    mx = max(mx, accumulate(a.begin() + pos + 1, a.end(), 0LL));
    mx = max(mx, accumulate(a.begin(), a.end(), 0LL));
    if (k >= 2) mx = max(mx, accumulate(a.begin(), a.end(), 0LL) - a[pos]);
    cout << mx << endl;
    return 0;
  }

  // subtask 3 K = 1, maximum subarray
  if (k == 1) {
    ll mx = 0, cur = 0;
    for (int i = 0; i < n; i++) {
      cur += a[i];
      mx = max(mx, cur);
      cur = max(cur, 0LL);
    }
    cout << mx << endl;
    return 0;
  }
}

Subtask #1
4.0 / 4.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 2568 KB Output is correct
2 Correct 80 ms 2612 KB Output is correct
3 Correct 81 ms 2644 KB Output is correct
4 Correct 83 ms 2516 KB Output is correct
5 Correct 83 ms 2516 KB Output is correct
6 Correct 80 ms 2568 KB Output is correct
7 Correct 81 ms 2564 KB Output is correct
8 Correct 97 ms 2608 KB Output is correct
9 Correct 86 ms 2572 KB Output is correct
10 Correct 91 ms 2516 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 43 ms 2516 KB Output is correct
2 Correct 45 ms 2644 KB Output is correct
3 Correct 45 ms 2516 KB Output is correct
4 Correct 43 ms 2604 KB Output is correct
5 Correct 82 ms 5324 KB Output is correct
6 Correct 42 ms 3660 KB Output is correct
7 Correct 44 ms 3660 KB Output is correct
8 Correct 81 ms 5416 KB Output is correct
9 Correct 80 ms 5232 KB Output is correct
10 Correct 44 ms 3660 KB Output is correct

Subtask #3
18.0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 95 ms 2516 KB Output is correct
2 Correct 87 ms 2576 KB Output is correct
3 Correct 89 ms 2516 KB Output is correct
4 Correct 85 ms 2516 KB Output is correct
5 Correct 86 ms 2616 KB Output is correct
6 Correct 87 ms 2616 KB Output is correct
7 Correct 91 ms 2644 KB Output is correct
8 Correct 85 ms 2516 KB Output is correct
9 Correct 88 ms 2644 KB Output is correct
10 Correct 90 ms 2644 KB Output is correct

Subtask #4
0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #6
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Incorrect 0 ms 212 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #7
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 85 ms 2568 KB Output is correct
2 Correct 80 ms 2612 KB Output is correct
3 Correct 81 ms 2644 KB Output is correct
4 Correct 83 ms 2516 KB Output is correct
5 Correct 83 ms 2516 KB Output is correct
6 Correct 80 ms 2568 KB Output is correct
7 Correct 81 ms 2564 KB Output is correct
8 Correct 97 ms 2608 KB Output is correct
9 Correct 86 ms 2572 KB Output is correct
10 Correct 91 ms 2516 KB Output is correct
11 Correct 43 ms 2516 KB Output is correct
12 Correct 45 ms 2644 KB Output is correct
13 Correct 45 ms 2516 KB Output is correct
14 Correct 43 ms 2604 KB Output is correct
15 Correct 82 ms 5324 KB Output is correct
16 Correct 42 ms 3660 KB Output is correct
17 Correct 44 ms 3660 KB Output is correct
18 Correct 81 ms 5416 KB Output is correct
19 Correct 80 ms 5232 KB Output is correct
20 Correct 44 ms 3660 KB Output is correct
21 Correct 95 ms 2516 KB Output is correct
22 Correct 87 ms 2576 KB Output is correct
23 Correct 89 ms 2516 KB Output is correct
24 Correct 85 ms 2516 KB Output is correct
25 Correct 86 ms 2616 KB Output is correct
26 Correct 87 ms 2616 KB Output is correct
27 Correct 91 ms 2644 KB Output is correct
28 Correct 85 ms 2516 KB Output is correct
29 Correct 88 ms 2644 KB Output is correct
30 Correct 90 ms 2644 KB Output is correct
31 Correct 0 ms 212 KB Output is correct
32 Incorrect 0 ms 212 KB Output isn't correct
33 Halted 0 ms 0 KB -