oj.uz

Submission #347200

# Submission time Handle Problem Language Result Execution time Memory
347200 2021-01-12T11:05:34 Z parsabahrami Cat in a tree (BOI17_catinatree) C++17
100 / 100
 110 ms 14572 KB 
// Call my Name and Save me from The Dark
#include <bits/stdc++.h>
 
using namespace std;

typedef long long int ll;
typedef pair<int, int> pii;
 
#define SZ(x)                       (int) x.size()
#define F                           first
#define S                           second

const int N = 2e5 + 10, MOD = 1e9 + 7;
int mx[N], dp[N], n, D;
vector<int> adj[N];

void DFS(int v) {
    if (!SZ(adj[v])) {
        dp[v] = 1, mx[v] = 0;
        return;
    }
    for (int u : adj[v]) DFS(u);
    sort(adj[v].begin(), adj[v].end(), [&](int u, int w) {
            return mx[u] > mx[w];
    });
    int M = MOD, res = 0;
    for (int u : adj[v]) {
        if (mx[u] + M + 2 >= D) {
            res += dp[u], M = mx[u];
        } else res += dp[u] - 1;
    }
    if (M >= D - 1) {
        M = -1, res++;
    }
    dp[v] = res, mx[v] = M + 1;
}

int main() {
    scanf("%d%d", &n, &D);
    for (int i = 1; i < n; i++) {
        int p; scanf("%d", &p);
        adj[p].push_back(i);
    }
    DFS(0);
    printf("%d\n", dp[0]);
    return 0;
}

Compilation message

catinatree.cpp: In function 'int main()':
catinatree.cpp:39:10: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   39 |     scanf("%d%d", &n, &D);
      |     ~~~~~^~~~~~~~~~~~~~~~
catinatree.cpp:41:21: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   41 |         int p; scanf("%d", &p);
      |                ~~~~~^~~~~~~~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 5 ms 4992 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 3 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 5 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 5 ms 4992 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 3 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 5 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5228 KB Output is correct
22 Correct 5 ms 4972 KB Output is correct
23 Correct 5 ms 4972 KB Output is correct
24 Correct 4 ms 4972 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 5 ms 5100 KB Output is correct
40 Correct 5 ms 5100 KB Output is correct

Subtask #3
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 4972 KB Output is correct
2 Correct 4 ms 4972 KB Output is correct
3 Correct 4 ms 4972 KB Output is correct
4 Correct 5 ms 4992 KB Output is correct
5 Correct 4 ms 4972 KB Output is correct
6 Correct 4 ms 4972 KB Output is correct
7 Correct 3 ms 4972 KB Output is correct
8 Correct 4 ms 4972 KB Output is correct
9 Correct 3 ms 4972 KB Output is correct
10 Correct 4 ms 4972 KB Output is correct
11 Correct 4 ms 4972 KB Output is correct
12 Correct 3 ms 4972 KB Output is correct
13 Correct 4 ms 4972 KB Output is correct
14 Correct 4 ms 4972 KB Output is correct
15 Correct 5 ms 4972 KB Output is correct
16 Correct 4 ms 4972 KB Output is correct
17 Correct 4 ms 4972 KB Output is correct
18 Correct 4 ms 4992 KB Output is correct
19 Correct 4 ms 4972 KB Output is correct
20 Correct 4 ms 4972 KB Output is correct
21 Correct 4 ms 5228 KB Output is correct
22 Correct 5 ms 4972 KB Output is correct
23 Correct 5 ms 4972 KB Output is correct
24 Correct 4 ms 4972 KB Output is correct
25 Correct 4 ms 5100 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5100 KB Output is correct
28 Correct 4 ms 5100 KB Output is correct
29 Correct 4 ms 5100 KB Output is correct
30 Correct 4 ms 5100 KB Output is correct
31 Correct 4 ms 5100 KB Output is correct
32 Correct 4 ms 5100 KB Output is correct
33 Correct 4 ms 5100 KB Output is correct
34 Correct 4 ms 5100 KB Output is correct
35 Correct 4 ms 5100 KB Output is correct
36 Correct 4 ms 5100 KB Output is correct
37 Correct 4 ms 5100 KB Output is correct
38 Correct 4 ms 5100 KB Output is correct
39 Correct 5 ms 5100 KB Output is correct
40 Correct 5 ms 5100 KB Output is correct
41 Correct 51 ms 10344 KB Output is correct
42 Correct 36 ms 7404 KB Output is correct
43 Correct 35 ms 7404 KB Output is correct
44 Correct 34 ms 7532 KB Output is correct
45 Correct 34 ms 7532 KB Output is correct
46 Correct 89 ms 9964 KB Output is correct
47 Correct 86 ms 9964 KB Output is correct
48 Correct 110 ms 10092 KB Output is correct
49 Correct 110 ms 10112 KB Output is correct
50 Correct 21 ms 6508 KB Output is correct
51 Correct 20 ms 6540 KB Output is correct
52 Correct 20 ms 6508 KB Output is correct
53 Correct 39 ms 7788 KB Output is correct
54 Correct 39 ms 7916 KB Output is correct
55 Correct 40 ms 7916 KB Output is correct
56 Correct 5 ms 5248 KB Output is correct
57 Correct 12 ms 6892 KB Output is correct
58 Correct 31 ms 12908 KB Output is correct
59 Correct 74 ms 14572 KB Output is correct
60 Correct 54 ms 10856 KB Output is correct
61 Correct 65 ms 10604 KB Output is correct