Submission #1178166

#	Time	Username	Problem	Language	Result	Execution time	Memory
1178166		alexander707070	Tree (IOI24_tree)	C++20	7 / 100	58 ms	21924 KiB

tree

#include<bits/stdc++.h>
#define MAXN 200007
using namespace std;

int n;
long long leaves[MAXN];
vector<int> v[MAXN];
long long cost[MAXN],ans;

long long L,R,sum[MAXN],dp[MAXN];

void dfs(int x){
	if(v[x].empty())leaves[x]=1;

	for(int i:v[x]){
		dfs(i);
		leaves[x]+=leaves[i];
	}
}

void init(vector<int> P, vector<int> W){
	n=int(P.size());

	for(int i=1;i<=n;i++)cost[i]=W[i-1];

	for(int i=1;i<P.size();i++){
		v[P[i]+1].push_back(i+1);
	}

	dfs(1);
	sort(leaves+1,leaves+n+1);
}

long long query(int lt, int rt){
	L=lt; R=rt;

	if(leaves[n]*L<=R)return leaves[n]*L;
	
	return 2*leaves[n]*L-R;

	/*ans=0;
	solve(1);
	return ans;*/
}

/*int main(){

	init({-1, 0, 0}, {1, 1, 1});
	cout<<query(1,1)<<"\n";

	cout<<query(1,2)<<"\n";

	return 0;
}*/

• Subtask 0: 0 / 0
• Subtask 1: 0 / 10
• Subtask 2: 0 / 13
• Subtask 3: 0 / 18
• Subtask 4: 7 / 7
• Subtask 5: 0 / 11
• Subtask 6: 0 / 22
• Subtask 7: 0 / 19