oj.uz

Submission #991984

# Submission time Handle Problem Language Result Execution time Memory
991984 2024-06-03T13:43:37 Z kshitij_sodani Fireworks (APIO16_fireworks) C++17
26 / 100
 20 ms 36188 KB 
#include <bits/stdc++.h>
using namespace std;

#define a first
#define b second
#define pb push_back
typedef long long llo;


vector<pair<llo,llo>> adj[300001];

#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>
using namespace __gnu_pbds;
#define ord tree<pair<llo,llo>,null_type,less<pair<llo,llo>>,rb_tree_tag,tree_order_statistics_node_update>

ord xx[300001];
pair<llo,llo> fun[300001];
llo n,m;
llo cot=0;
llo dfs(llo no){

	vector<llo> cur;
	for(auto j:adj[no]){
		if(j.a>=n){
			fun[j.a]={-1,j.b};
			xx[j.a].insert({j.b,cot});
			cot++;
			xx[j.a].insert({j.b,cot});
			cot++;
			cur.pb(j.a);
		}
		else{
			llo x=dfs(j.a);
			cur.pb(x);
			llo la2=-1;
			while(xx[x].size()+fun[x].a>0){
				if(xx[x].size()+fun[x].a==1){
					la2=(*(xx[x].find_by_order(xx[x].size()-1))).a;
				}
				xx[x].erase(xx[x].find_by_order(xx[x].size()-1));
			}
			llo la=(*(xx[x].find_by_order(xx[x].size()-1))).a;
			if(la2==-1){
				la2=la;
			}
			fun[x].b+=j.b;
			if(xx[x].size()+fun[x].a==0){
				xx[x].erase(xx[x].find_by_order(xx[x].size()-1));
			}
			else{
				while(xx[x].size()+fun[x].a<0){
					xx[x].insert({la,cot});
					cot++;
				}
			}
			//sum is -1
			//xx[x].insert({la,cot});
			cot++;
			xx[x].insert({la+j.b,cot});
			cot++;
			xx[x].insert({la2+j.b,cot});
			cot++;
			/*if(no==1){
				cout<<fun[x].a<<":"<<fun[x].b<<endl;
				for(auto j:xx[x]){
					cout<<j.a<<",";
				}
				cout<<endl;
			}*/
			//fun[x].a+=-1;
			//fun[x].b+=j.b;
		}

	}
	pair<llo,llo> ma={-1,-1};
	for(auto j:cur){
		ma=max(ma,{(llo)xx[j].size(),j});
	}
	for(auto j:cur){
		if(j!=ma.b){
			for(auto jj:xx[j]){
				xx[ma.b].insert(jj);
			}
			fun[ma.b].a+=fun[j].a;
			fun[ma.b].b+=fun[j].b;
		}
	}
	/*cout<<no<<"::"<<ma.b<<endl;
	cout<<fun[ma.b].a<<";"<<fun[ma.b].b<<endl;
	for(auto j:xx[ma.b]){
		cout<<j.a<<",";
	}
	cout<<endl;*/
	return ma.b;




}
int main(){
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);


	
	cin>>n>>m;
	for(llo i=1;i<n+m;i++){
		llo aa,bb;
		cin>>aa>>bb;
		aa--;
		adj[aa].pb({i,bb});
	}


	llo ha=dfs(0);
	llo ans=fun[ha].a;
	vector<int> ne;
	for(auto j:xx[ha]){
		ne.pb(j.a);
	}
	llo val=fun[ha].b;
	llo pr=0;
	for(int i=0;i<ne.size();i++){
		if(fun[ha].a==0){
			break;
		}
		val+=fun[ha].a*(ne[i]-pr);
		pr=ne[i];
		fun[ha].a+=1;
	}
	cout<<val<<endl;
	/*cout<<fun[ha].a<<"::"<<fun[ha].b<<endl;
	for(auto j:xx[ha]){
		cout<<j.a<<",";
	}
	cout<<endl;


*/






	return 0;
}

Compilation message

fireworks.cpp: In function 'int main()':
fireworks.cpp:124:15: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  124 |  for(int i=0;i<ne.size();i++){
      |              ~^~~~~~~~~~
fireworks.cpp:117:6: warning: unused variable 'ans' [-Wunused-variable]
  117 |  llo ans=fun[ha].a;
      |      ^~~

Subtask #1
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35932 KB Output is correct
2 Correct 14 ms 35932 KB Output is correct
3 Correct 16 ms 36108 KB Output is correct
4 Correct 17 ms 35932 KB Output is correct
5 Correct 15 ms 35932 KB Output is correct
6 Correct 15 ms 35932 KB Output is correct
7 Correct 15 ms 35932 KB Output is correct
8 Correct 15 ms 35932 KB Output is correct
9 Correct 16 ms 35932 KB Output is correct
10 Correct 16 ms 35940 KB Output is correct

Subtask #2
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 15 ms 36184 KB Output is correct
2 Correct 20 ms 35932 KB Output is correct
3 Correct 16 ms 36072 KB Output is correct
4 Correct 17 ms 35976 KB Output is correct
5 Correct 17 ms 35932 KB Output is correct
6 Correct 16 ms 35996 KB Output is correct
7 Correct 17 ms 35932 KB Output is correct
8 Correct 18 ms 35932 KB Output is correct
9 Correct 18 ms 35932 KB Output is correct
10 Correct 16 ms 35932 KB Output is correct
11 Correct 17 ms 36120 KB Output is correct
12 Correct 17 ms 35932 KB Output is correct
13 Correct 15 ms 35932 KB Output is correct
14 Correct 17 ms 35932 KB Output is correct
15 Correct 15 ms 35932 KB Output is correct
16 Correct 17 ms 35968 KB Output is correct
17 Correct 16 ms 35932 KB Output is correct
18 Correct 17 ms 36108 KB Output is correct
19 Correct 18 ms 35932 KB Output is correct

Subtask #3
0 / 29.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35932 KB Output is correct
2 Correct 14 ms 35932 KB Output is correct
3 Correct 16 ms 36108 KB Output is correct
4 Correct 17 ms 35932 KB Output is correct
5 Correct 15 ms 35932 KB Output is correct
6 Correct 15 ms 35932 KB Output is correct
7 Correct 15 ms 35932 KB Output is correct
8 Correct 15 ms 35932 KB Output is correct
9 Correct 16 ms 35932 KB Output is correct
10 Correct 16 ms 35940 KB Output is correct
11 Correct 15 ms 36184 KB Output is correct
12 Correct 20 ms 35932 KB Output is correct
13 Correct 16 ms 36072 KB Output is correct
14 Correct 17 ms 35976 KB Output is correct
15 Correct 17 ms 35932 KB Output is correct
16 Correct 16 ms 35996 KB Output is correct
17 Correct 17 ms 35932 KB Output is correct
18 Correct 18 ms 35932 KB Output is correct
19 Correct 18 ms 35932 KB Output is correct
20 Correct 16 ms 35932 KB Output is correct
21 Correct 17 ms 36120 KB Output is correct
22 Correct 17 ms 35932 KB Output is correct
23 Correct 15 ms 35932 KB Output is correct
24 Correct 17 ms 35932 KB Output is correct
25 Correct 15 ms 35932 KB Output is correct
26 Correct 17 ms 35968 KB Output is correct
27 Correct 16 ms 35932 KB Output is correct
28 Correct 17 ms 36108 KB Output is correct
29 Correct 18 ms 35932 KB Output is correct
30 Incorrect 17 ms 36188 KB Output isn't correct
31 Halted 0 ms 0 KB -

Subtask #4
0 / 45.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 35932 KB Output is correct
2 Correct 14 ms 35932 KB Output is correct
3 Correct 16 ms 36108 KB Output is correct
4 Correct 17 ms 35932 KB Output is correct
5 Correct 15 ms 35932 KB Output is correct
6 Correct 15 ms 35932 KB Output is correct
7 Correct 15 ms 35932 KB Output is correct
8 Correct 15 ms 35932 KB Output is correct
9 Correct 16 ms 35932 KB Output is correct
10 Correct 16 ms 35940 KB Output is correct
11 Correct 15 ms 36184 KB Output is correct
12 Correct 20 ms 35932 KB Output is correct
13 Correct 16 ms 36072 KB Output is correct
14 Correct 17 ms 35976 KB Output is correct
15 Correct 17 ms 35932 KB Output is correct
16 Correct 16 ms 35996 KB Output is correct
17 Correct 17 ms 35932 KB Output is correct
18 Correct 18 ms 35932 KB Output is correct
19 Correct 18 ms 35932 KB Output is correct
20 Correct 16 ms 35932 KB Output is correct
21 Correct 17 ms 36120 KB Output is correct
22 Correct 17 ms 35932 KB Output is correct
23 Correct 15 ms 35932 KB Output is correct
24 Correct 17 ms 35932 KB Output is correct
25 Correct 15 ms 35932 KB Output is correct
26 Correct 17 ms 35968 KB Output is correct
27 Correct 16 ms 35932 KB Output is correct
28 Correct 17 ms 36108 KB Output is correct
29 Correct 18 ms 35932 KB Output is correct
30 Incorrect 17 ms 36188 KB Output isn't correct
31 Halted 0 ms 0 KB -