oj.uz

Submission #883417

# Submission time Handle Problem Language Result Execution time Memory
883417 2023-12-05T09:11:30 Z dimashhh Cat in a tree (BOI17_catinatree) C++17
51 / 100
 26 ms 18136 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1501,MOD = 1e9 + 7;

int n,d,dp[N][N];
vector<int> g[N];
void dfs(int v,int pr = -1){
    dp[v][0] = 1;
    for(int to:g[v]){
        if(to == pr) continue;
        dfs(to,v);
        dp[v][0] += dp[to][d - 1];
    }
    for(int dep = 1;dep <= n;dep++){
        if(d - dep - 1 < dep - 1){
            for(int to:g[v]){
                dp[v][dep] += dp[to][dep - 1];
            }
            continue;
        }
        int mx = 0;
        for(int to:g[v]){
            if(to == pr) continue;
            dp[v][dep] += dp[to][d - dep - 1];
            mx = max(mx,dp[to][dep - 1] - dp[to][d - dep -1 ]);
        }
        dp[v][dep] += mx;
    }
    for(int i = d - 1;i >= 0;i--){
        dp[v][i] = max(dp[v][i + 1],dp[v][i]);
        // cout << v << ' ' << dp[v][i] << '\n';
    }
}
void test(){
    cin >> n >> d;
    for(int i = 2;i <= n;i++){
        int x;
        cin >> x;
        ++x;
        g[x].push_back(i);
    }
    dfs(1);
    cout << dp[1][0];
}
main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int T = 1;
    // cin >> T;
    while(T--)
        test();
}

Compilation message

catinatree.cpp:46:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   46 | main(){
      | ^~~~

Subtask #1
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 344 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 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct

Subtask #2
40.0 / 40.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 344 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 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 10 ms 9308 KB Output is correct
22 Correct 1 ms 4700 KB Output is correct
23 Correct 1 ms 4700 KB Output is correct
24 Correct 1 ms 4696 KB Output is correct
25 Correct 3 ms 6744 KB Output is correct
26 Correct 3 ms 6748 KB Output is correct
27 Correct 3 ms 6748 KB Output is correct
28 Correct 6 ms 9052 KB Output is correct
29 Correct 6 ms 9052 KB Output is correct
30 Correct 8 ms 9020 KB Output is correct
31 Correct 6 ms 9052 KB Output is correct
32 Correct 6 ms 9052 KB Output is correct
33 Correct 6 ms 9048 KB Output is correct
34 Correct 6 ms 8796 KB Output is correct
35 Correct 5 ms 8796 KB Output is correct
36 Correct 8 ms 9052 KB Output is correct
37 Correct 6 ms 8952 KB Output is correct
38 Correct 6 ms 9052 KB Output is correct
39 Correct 7 ms 9052 KB Output is correct
40 Correct 6 ms 9308 KB Output is correct

Subtask #3
0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 348 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 344 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 0 ms 348 KB Output is correct
11 Correct 0 ms 344 KB Output is correct
12 Correct 0 ms 348 KB Output is correct
13 Correct 0 ms 348 KB Output is correct
14 Correct 0 ms 348 KB Output is correct
15 Correct 0 ms 348 KB Output is correct
16 Correct 0 ms 348 KB Output is correct
17 Correct 0 ms 348 KB Output is correct
18 Correct 0 ms 348 KB Output is correct
19 Correct 1 ms 348 KB Output is correct
20 Correct 0 ms 348 KB Output is correct
21 Correct 10 ms 9308 KB Output is correct
22 Correct 1 ms 4700 KB Output is correct
23 Correct 1 ms 4700 KB Output is correct
24 Correct 1 ms 4696 KB Output is correct
25 Correct 3 ms 6744 KB Output is correct
26 Correct 3 ms 6748 KB Output is correct
27 Correct 3 ms 6748 KB Output is correct
28 Correct 6 ms 9052 KB Output is correct
29 Correct 6 ms 9052 KB Output is correct
30 Correct 8 ms 9020 KB Output is correct
31 Correct 6 ms 9052 KB Output is correct
32 Correct 6 ms 9052 KB Output is correct
33 Correct 6 ms 9048 KB Output is correct
34 Correct 6 ms 8796 KB Output is correct
35 Correct 5 ms 8796 KB Output is correct
36 Correct 8 ms 9052 KB Output is correct
37 Correct 6 ms 8952 KB Output is correct
38 Correct 6 ms 9052 KB Output is correct
39 Correct 7 ms 9052 KB Output is correct
40 Correct 6 ms 9308 KB Output is correct
41 Runtime error 26 ms 18136 KB Execution killed with signal 11
42 Halted 0 ms 0 KB -