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Submission #531071

# Submission time Handle Problem Language Result Execution time Memory
531071 2022-02-27T15:52:30 Z Alex_tz307 Paprike (COI18_paprike) C++17
100 / 100
 93 ms 22208 KB 
#include <bits/stdc++.h>

using namespace std;

const int kN = 1e5;
int n, k, h[1 + kN];
vector<int> g[1 + kN];

struct state {
  int minCuts;
  int64_t minSum;
} dp[1 + kN];

void dfs(int u, int par) {
  dp[u].minCuts = 0;
  dp[u].minSum = h[u];
  priority_queue<int64_t> pq;
  for (int v : g[u]) {
    if (v != par) {
      dfs(v, u);
      dp[u].minCuts += dp[v].minCuts;
      dp[u].minSum += dp[v].minSum;
      pq.emplace(dp[v].minSum);
    }
  }
  while (dp[u].minSum > k) {
    dp[u].minCuts += 1;
    dp[u].minSum -= pq.top();
    pq.pop();
  }
}

void testCase() {
  cin >> n >> k;
  for (int i = 1; i <= n; ++i) {
    cin >> h[i];
  }
  for (int i = 1; i < n; ++i) {
    int u, v;
    cin >> u >> v;
    g[u].emplace_back(v);
    g[v].emplace_back(u);
  }
  dfs(1, 0);
  cout << dp[1].minCuts << '\n';
}

int main() {
  ios_base::sync_with_stdio(false);
  cin.tie(nullptr);
  int tests = 1;
  for (int tc = 0; tc < tests; ++tc) {
    testCase();
  }
  return 0;
}

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2676 KB Output is correct
4 Correct 1 ms 2680 KB Output is correct
5 Correct 2 ms 2676 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2576 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 1 ms 2676 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 22196 KB Output is correct
2 Correct 56 ms 22128 KB Output is correct
3 Correct 46 ms 22208 KB Output is correct
4 Correct 45 ms 22168 KB Output is correct
5 Correct 41 ms 22172 KB Output is correct
6 Correct 44 ms 22072 KB Output is correct
7 Correct 45 ms 22092 KB Output is correct
8 Correct 53 ms 21728 KB Output is correct

Subtask #3
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2676 KB Output is correct
4 Correct 1 ms 2680 KB Output is correct
5 Correct 2 ms 2676 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2576 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 1 ms 2676 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 2 ms 2764 KB Output is correct
23 Correct 2 ms 2764 KB Output is correct
24 Correct 3 ms 2696 KB Output is correct
25 Correct 2 ms 2688 KB Output is correct
26 Correct 2 ms 2636 KB Output is correct
27 Correct 3 ms 2636 KB Output is correct
28 Correct 2 ms 2724 KB Output is correct
29 Correct 2 ms 2636 KB Output is correct
30 Correct 2 ms 2636 KB Output is correct
31 Correct 2 ms 2688 KB Output is correct
32 Correct 3 ms 2636 KB Output is correct
33 Correct 2 ms 2636 KB Output is correct
34 Correct 3 ms 2636 KB Output is correct
35 Correct 3 ms 2636 KB Output is correct
36 Correct 2 ms 2680 KB Output is correct
37 Correct 2 ms 2636 KB Output is correct
38 Correct 2 ms 2764 KB Output is correct

Subtask #4
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 2636 KB Output is correct
2 Correct 2 ms 2636 KB Output is correct
3 Correct 1 ms 2676 KB Output is correct
4 Correct 1 ms 2680 KB Output is correct
5 Correct 2 ms 2676 KB Output is correct
6 Correct 2 ms 2636 KB Output is correct
7 Correct 2 ms 2636 KB Output is correct
8 Correct 2 ms 2636 KB Output is correct
9 Correct 2 ms 2636 KB Output is correct
10 Correct 1 ms 2636 KB Output is correct
11 Correct 2 ms 2636 KB Output is correct
12 Correct 2 ms 2636 KB Output is correct
13 Correct 2 ms 2636 KB Output is correct
14 Correct 2 ms 2636 KB Output is correct
15 Correct 2 ms 2576 KB Output is correct
16 Correct 2 ms 2636 KB Output is correct
17 Correct 2 ms 2636 KB Output is correct
18 Correct 2 ms 2636 KB Output is correct
19 Correct 2 ms 2636 KB Output is correct
20 Correct 1 ms 2676 KB Output is correct
21 Correct 2 ms 2636 KB Output is correct
22 Correct 48 ms 22196 KB Output is correct
23 Correct 56 ms 22128 KB Output is correct
24 Correct 46 ms 22208 KB Output is correct
25 Correct 45 ms 22168 KB Output is correct
26 Correct 41 ms 22172 KB Output is correct
27 Correct 44 ms 22072 KB Output is correct
28 Correct 45 ms 22092 KB Output is correct
29 Correct 53 ms 21728 KB Output is correct
30 Correct 2 ms 2764 KB Output is correct
31 Correct 2 ms 2764 KB Output is correct
32 Correct 3 ms 2696 KB Output is correct
33 Correct 2 ms 2688 KB Output is correct
34 Correct 2 ms 2636 KB Output is correct
35 Correct 3 ms 2636 KB Output is correct
36 Correct 2 ms 2724 KB Output is correct
37 Correct 2 ms 2636 KB Output is correct
38 Correct 2 ms 2636 KB Output is correct
39 Correct 2 ms 2688 KB Output is correct
40 Correct 3 ms 2636 KB Output is correct
41 Correct 2 ms 2636 KB Output is correct
42 Correct 3 ms 2636 KB Output is correct
43 Correct 3 ms 2636 KB Output is correct
44 Correct 2 ms 2680 KB Output is correct
45 Correct 2 ms 2636 KB Output is correct
46 Correct 2 ms 2764 KB Output is correct
47 Correct 45 ms 14272 KB Output is correct
48 Correct 42 ms 12244 KB Output is correct
49 Correct 50 ms 11396 KB Output is correct
50 Correct 45 ms 10996 KB Output is correct
51 Correct 58 ms 9864 KB Output is correct
52 Correct 70 ms 9808 KB Output is correct
53 Correct 73 ms 9692 KB Output is correct
54 Correct 58 ms 9668 KB Output is correct
55 Correct 56 ms 9260 KB Output is correct
56 Correct 93 ms 9156 KB Output is correct
57 Correct 33 ms 10700 KB Output is correct