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Submission #915057

# Submission time Handle Problem Language Result Execution time Memory
915057 2024-01-23T09:07:27 Z PM1 Magic Tree (CEOI19_magictree) C++17
100 / 100
 141 ms 36948 KB 
#include <bits/stdc++.h>
using namespace std;
#define fr first
#define sc second
#define ll long long
const int mxn=1e5+5;
int n,m,k,par[mxn],comp[mxn];
pair<int,int>f[mxn];
set<pair<int,ll>>s[mxn];
vector<int>v[mxn];
void up(int z,int x){
	ll w=f[z].sc,d=f[z].fr,res=0;
	auto y=s[x].lower_bound({d,(ll)-1e18});
	if(y!=s[x].end() && y->fr==d){
		s[x].erase(y);
		res=y->sc;
	}
	s[x].insert({d,res+w});
	while(w>0){
		y=s[x].upper_bound({d+1,(ll)-1e18});
		if(y==s[x].end())
			break;
		ll res=y->sc,dd=y->fr;
		s[x].erase(y);
		if(res>w)
			s[x].insert({dd,res-w});
		w-=res;
	}
}
void dsu(int x,int y){
	for(auto i:s[y]){
		auto w=s[x].lower_bound({i.fr,(ll)-1e18});
		ll res=0;
		if(w !=s[x].end() && w->fr==i.fr){
			s[x].erase(w);
			res+=w->sc;
		}
		s[x].insert({i.fr,i.sc+res});
	}
}
void dfs(int z){
	comp[z]=z;
	for(auto i:v[z]){
		if(i!=par[z]){
			dfs(i);
			if(s[comp[i]].size()>s[comp[z]].size())
				comp[z]=comp[i];
		}
	}
	for(auto i:v[z]){
		if(i!=par[z] && comp[z]!=comp[i]){
			dsu(comp[z],comp[i]);
		}
	}
	up(z,comp[z]);
	
}
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cout.tie(0);
	cin>>n>>m>>k;
	for(int i=2;i<=n;i++){
		cin>>par[i];
		v[par[i]].push_back(i);
	}
	for(int i=1;i<=m;i++){
		int x,y,w;
		cin>>x>>y>>w;
		f[x]={y,w};
	}
	dfs(1);
	ll ans=0;
	for(auto i:s[comp[1]])
		ans+=i.sc;
	cout<<ans<<'\n';
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8792 KB Output is correct
3 Correct 3 ms 8792 KB Output is correct
4 Correct 2 ms 8792 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct

Subtask #2
3.0 / 3.0

# Verdict Execution time Memory Grader output
1 Correct 70 ms 21812 KB Output is correct
2 Correct 42 ms 18512 KB Output is correct
3 Correct 141 ms 36948 KB Output is correct
4 Correct 65 ms 21456 KB Output is correct
5 Correct 89 ms 22184 KB Output is correct

Subtask #3
11.0 / 11.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 8844 KB Output is correct
2 Correct 2 ms 8792 KB Output is correct
3 Correct 2 ms 8796 KB Output is correct
4 Correct 42 ms 21844 KB Output is correct
5 Correct 72 ms 26036 KB Output is correct
6 Correct 56 ms 21724 KB Output is correct

Subtask #4
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 52 ms 17152 KB Output is correct
2 Correct 53 ms 16280 KB Output is correct
3 Correct 43 ms 18004 KB Output is correct
4 Correct 37 ms 17368 KB Output is correct
5 Correct 42 ms 22148 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8792 KB Output is correct
3 Correct 3 ms 8792 KB Output is correct
4 Correct 2 ms 8792 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 78 ms 19288 KB Output is correct
11 Correct 53 ms 18260 KB Output is correct
12 Correct 51 ms 17232 KB Output is correct
13 Correct 35 ms 16844 KB Output is correct
14 Correct 46 ms 21252 KB Output is correct

Subtask #6
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 10076 KB Output is correct
2 Correct 30 ms 14388 KB Output is correct
3 Correct 43 ms 14420 KB Output is correct
4 Correct 38 ms 14532 KB Output is correct
5 Correct 20 ms 15972 KB Output is correct
6 Correct 30 ms 16212 KB Output is correct
7 Correct 24 ms 16464 KB Output is correct

Subtask #7
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8792 KB Output is correct
3 Correct 3 ms 8792 KB Output is correct
4 Correct 2 ms 8792 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 3 ms 8844 KB Output is correct
11 Correct 2 ms 8792 KB Output is correct
12 Correct 2 ms 8796 KB Output is correct
13 Correct 42 ms 21844 KB Output is correct
14 Correct 72 ms 26036 KB Output is correct
15 Correct 56 ms 21724 KB Output is correct
16 Correct 78 ms 19288 KB Output is correct
17 Correct 53 ms 18260 KB Output is correct
18 Correct 51 ms 17232 KB Output is correct
19 Correct 35 ms 16844 KB Output is correct
20 Correct 46 ms 21252 KB Output is correct
21 Correct 17 ms 12124 KB Output is correct
22 Correct 84 ms 21820 KB Output is correct
23 Correct 86 ms 24940 KB Output is correct
24 Correct 112 ms 31568 KB Output is correct
25 Correct 60 ms 20692 KB Output is correct
26 Correct 84 ms 21404 KB Output is correct
27 Correct 74 ms 19268 KB Output is correct

Subtask #8
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 8792 KB Output is correct
2 Correct 2 ms 8792 KB Output is correct
3 Correct 3 ms 8792 KB Output is correct
4 Correct 2 ms 8792 KB Output is correct
5 Correct 2 ms 8796 KB Output is correct
6 Correct 2 ms 8796 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 2 ms 8796 KB Output is correct
9 Correct 2 ms 8796 KB Output is correct
10 Correct 70 ms 21812 KB Output is correct
11 Correct 42 ms 18512 KB Output is correct
12 Correct 141 ms 36948 KB Output is correct
13 Correct 65 ms 21456 KB Output is correct
14 Correct 89 ms 22184 KB Output is correct
15 Correct 3 ms 8844 KB Output is correct
16 Correct 2 ms 8792 KB Output is correct
17 Correct 2 ms 8796 KB Output is correct
18 Correct 42 ms 21844 KB Output is correct
19 Correct 72 ms 26036 KB Output is correct
20 Correct 56 ms 21724 KB Output is correct
21 Correct 52 ms 17152 KB Output is correct
22 Correct 53 ms 16280 KB Output is correct
23 Correct 43 ms 18004 KB Output is correct
24 Correct 37 ms 17368 KB Output is correct
25 Correct 42 ms 22148 KB Output is correct
26 Correct 78 ms 19288 KB Output is correct
27 Correct 53 ms 18260 KB Output is correct
28 Correct 51 ms 17232 KB Output is correct
29 Correct 35 ms 16844 KB Output is correct
30 Correct 46 ms 21252 KB Output is correct
31 Correct 7 ms 10076 KB Output is correct
32 Correct 30 ms 14388 KB Output is correct
33 Correct 43 ms 14420 KB Output is correct
34 Correct 38 ms 14532 KB Output is correct
35 Correct 20 ms 15972 KB Output is correct
36 Correct 30 ms 16212 KB Output is correct
37 Correct 24 ms 16464 KB Output is correct
38 Correct 17 ms 12124 KB Output is correct
39 Correct 84 ms 21820 KB Output is correct
40 Correct 86 ms 24940 KB Output is correct
41 Correct 112 ms 31568 KB Output is correct
42 Correct 60 ms 20692 KB Output is correct
43 Correct 84 ms 21404 KB Output is correct
44 Correct 74 ms 19268 KB Output is correct
45 Correct 21 ms 12440 KB Output is correct
46 Correct 79 ms 22836 KB Output is correct
47 Correct 93 ms 26132 KB Output is correct
48 Correct 133 ms 34640 KB Output is correct
49 Correct 65 ms 21456 KB Output is correct
50 Correct 99 ms 22356 KB Output is correct
51 Correct 81 ms 20048 KB Output is correct