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Submission #922884

# Submission time Handle Problem Language Result Execution time Memory
922884 2024-02-06T08:48:29 Z ttamx Magic Tree (CEOI19_magictree) C++14
100 / 100
 97 ms 32848 KB 
#include<bits/stdc++.h>

using namespace std;

using ll = long long;

const int N=1e5+5;

int n,m,k;
vector<int> adj[N];
int d[N],w[N];
map<int,ll> dp[N];

void dfs(int u){
    for(auto v:adj[u]){
        dfs(v);
        if(dp[v].size()>dp[u].size())swap(dp[u],dp[v]);
        for(auto [x,y]:dp[v])dp[u][x]+=y;
        dp[v].clear();
    }
    if(w[u]){
        dp[u][d[u]]+=w[u];
        int tmp=w[u];
        for(auto it=next(dp[u].find(d[u]));it!=dp[u].end();){
            if(tmp>=it->second){
                tmp-=it->second;
                it=dp[u].erase(it);
            }else{
                it->second-=tmp;
                break;
            }
        }
    }
}

int main(){
    cin.tie(nullptr)->sync_with_stdio(false);
    cin >> n >> m >> k;
    for(int i=2;i<=n;i++){
        int p;
        cin >> p;
        adj[p].emplace_back(i);
    }
    for(int i=1;i<=m;i++){
        int u;
        cin >> u >> d[u] >> w[u];
    }
    dfs(1);
    ll ans=0;
    for(auto [x,y]:dp[1])ans+=y;
    cout << ans;
}

Compilation message

magictree.cpp: In function 'void dfs(int)':
magictree.cpp:18:18: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   18 |         for(auto [x,y]:dp[v])dp[u][x]+=y;
      |                  ^
magictree.cpp: In function 'int main()':
magictree.cpp:50:14: warning: structured bindings only available with '-std=c++17' or '-std=gnu++17'
   50 |     for(auto [x,y]:dp[1])ans+=y;
      |              ^

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 42 ms 12580 KB Output is correct
2 Correct 33 ms 19536 KB Output is correct
3 Correct 97 ms 15900 KB Output is correct
4 Correct 49 ms 14328 KB Output is correct
5 Correct 61 ms 16468 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8280 KB Output is correct
2 Correct 3 ms 8284 KB Output is correct
3 Correct 3 ms 8284 KB Output is correct
4 Correct 48 ms 28788 KB Output is correct
5 Correct 79 ms 32848 KB Output is correct
6 Correct 64 ms 29008 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 45 ms 11996 KB Output is correct
2 Correct 55 ms 12372 KB Output is correct
3 Correct 41 ms 19024 KB Output is correct
4 Correct 32 ms 10352 KB Output is correct
5 Correct 38 ms 29008 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 66 ms 11356 KB Output is correct
11 Correct 65 ms 11328 KB Output is correct
12 Correct 38 ms 18512 KB Output is correct
13 Correct 25 ms 9688 KB Output is correct
14 Correct 39 ms 28500 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 8540 KB Output is correct
2 Correct 16 ms 10332 KB Output is correct
3 Correct 17 ms 10332 KB Output is correct
4 Correct 17 ms 10332 KB Output is correct
5 Correct 7 ms 8928 KB Output is correct
6 Correct 18 ms 13404 KB Output is correct
7 Correct 22 ms 17632 KB Output is correct

Subtask #7
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 3 ms 8280 KB Output is correct
11 Correct 3 ms 8284 KB Output is correct
12 Correct 3 ms 8284 KB Output is correct
13 Correct 48 ms 28788 KB Output is correct
14 Correct 79 ms 32848 KB Output is correct
15 Correct 64 ms 29008 KB Output is correct
16 Correct 66 ms 11356 KB Output is correct
17 Correct 65 ms 11328 KB Output is correct
18 Correct 38 ms 18512 KB Output is correct
19 Correct 25 ms 9688 KB Output is correct
20 Correct 39 ms 28500 KB Output is correct
21 Correct 13 ms 9048 KB Output is correct
22 Correct 40 ms 11356 KB Output is correct
23 Correct 61 ms 13140 KB Output is correct
24 Correct 86 ms 14992 KB Output is correct
25 Correct 53 ms 13640 KB Output is correct
26 Correct 63 ms 18444 KB Output is correct
27 Correct 60 ms 20304 KB Output is correct

Subtask #8
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8024 KB Output is correct
2 Correct 2 ms 8284 KB Output is correct
3 Correct 2 ms 8028 KB Output is correct
4 Correct 2 ms 8284 KB Output is correct
5 Correct 2 ms 8284 KB Output is correct
6 Correct 3 ms 8284 KB Output is correct
7 Correct 3 ms 8284 KB Output is correct
8 Correct 2 ms 8284 KB Output is correct
9 Correct 2 ms 8284 KB Output is correct
10 Correct 42 ms 12580 KB Output is correct
11 Correct 33 ms 19536 KB Output is correct
12 Correct 97 ms 15900 KB Output is correct
13 Correct 49 ms 14328 KB Output is correct
14 Correct 61 ms 16468 KB Output is correct
15 Correct 3 ms 8280 KB Output is correct
16 Correct 3 ms 8284 KB Output is correct
17 Correct 3 ms 8284 KB Output is correct
18 Correct 48 ms 28788 KB Output is correct
19 Correct 79 ms 32848 KB Output is correct
20 Correct 64 ms 29008 KB Output is correct
21 Correct 45 ms 11996 KB Output is correct
22 Correct 55 ms 12372 KB Output is correct
23 Correct 41 ms 19024 KB Output is correct
24 Correct 32 ms 10352 KB Output is correct
25 Correct 38 ms 29008 KB Output is correct
26 Correct 66 ms 11356 KB Output is correct
27 Correct 65 ms 11328 KB Output is correct
28 Correct 38 ms 18512 KB Output is correct
29 Correct 25 ms 9688 KB Output is correct
30 Correct 39 ms 28500 KB Output is correct
31 Correct 7 ms 8540 KB Output is correct
32 Correct 16 ms 10332 KB Output is correct
33 Correct 17 ms 10332 KB Output is correct
34 Correct 17 ms 10332 KB Output is correct
35 Correct 7 ms 8928 KB Output is correct
36 Correct 18 ms 13404 KB Output is correct
37 Correct 22 ms 17632 KB Output is correct
38 Correct 13 ms 9048 KB Output is correct
39 Correct 40 ms 11356 KB Output is correct
40 Correct 61 ms 13140 KB Output is correct
41 Correct 86 ms 14992 KB Output is correct
42 Correct 53 ms 13640 KB Output is correct
43 Correct 63 ms 18444 KB Output is correct
44 Correct 60 ms 20304 KB Output is correct
45 Correct 15 ms 9308 KB Output is correct
46 Correct 50 ms 11640 KB Output is correct
47 Correct 61 ms 13700 KB Output is correct
48 Correct 85 ms 15956 KB Output is correct
49 Correct 50 ms 14288 KB Output is correct
50 Correct 72 ms 19472 KB Output is correct
51 Correct 60 ms 21140 KB Output is correct