oj.uz

답안 #525367

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
525367 2022-02-11T13:36:21 Z Koosha_mv Designated Cities (JOI19_designated_cities) C++14
7 / 100
 328 ms 76648 KB 
#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
#define int ll

const int N=1e6+99,inf=1e15;

int n,t,X,Y,q,to[N],w[N],res[N],ans[N],pes[N];
pair<int,int> dp[N];
vector<int> g[N];

void dfs1(int u,int p){
	for(auto id : g[u]){
		int v=to[id];
		if(v==p) continue ;
		res[1]+=w[id];
		dfs1(v,u);
	}
}
void dfs2(int u,int p){
	vector<pair<int,int> > vec(3);
	for(auto id : g[u]){
		int v=to[id];
		if(v==p) continue ;
		res[v]=res[u]-w[id]+w[id^1];
		dfs2(v,u);
		dp[v].F+=w[id];
		vec[0]=dp[v];
		sort(all(vec));
	}
	if(vec[2].S==0){
		dp[u]={0,u};
	}
	else{
		dp[u]=vec[2];
	}
	pes[u]=inf;
	if(vec[1].S!=0 && res[u]-vec[1].F-vec[2].F<ans[2]){
		ans[2]=res[u]-vec[1].F-vec[2].F;
		X=vec[1].S;
		Y=vec[2].S;
	}
	minm(ans[1],res[u]);
}
void find(){
	fill(ans,ans+N,inf);
	dfs1(1,0);
	dfs2(1,0);
	//cout<<ans[1]<<" "<<ans[2]<<endl;
}

main(){
	ios::sync_with_stdio(false);cin.tie(nullptr);cout.tie(nullptr);
	cin>>n;
	f(i,1,n){
		int u,v;
		cin>>u>>v>>w[2*i]>>w[2*i+1];
		to[2*i]=v;
		to[2*i+1]=u;
		g[u].pb(2*i);
		g[v].pb(2*i+1);
	}
	find();
	cin>>q;
	while(q--){
		int x;
		cin>>x;
		cout<<ans[x]<<'\n';
	}
}

Compilation message

designated_cities.cpp:70:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   70 | main(){
      | ^~~~

Subtask #1
0 / 6.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 16 ms 31596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 31604 KB Output is correct
2 Correct 239 ms 51608 KB Output is correct
3 Correct 314 ms 76120 KB Output is correct
4 Correct 236 ms 51596 KB Output is correct
5 Correct 221 ms 51544 KB Output is correct
6 Correct 249 ms 55088 KB Output is correct
7 Correct 193 ms 51640 KB Output is correct
8 Correct 328 ms 76648 KB Output is correct
9 Correct 147 ms 52060 KB Output is correct

Subtask #3
0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 16 ms 31616 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 16 ms 31596 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 31604 KB Output is correct
2 Correct 239 ms 51608 KB Output is correct
3 Correct 314 ms 76120 KB Output is correct
4 Correct 236 ms 51596 KB Output is correct
5 Correct 221 ms 51544 KB Output is correct
6 Correct 249 ms 55088 KB Output is correct
7 Correct 193 ms 51640 KB Output is correct
8 Correct 328 ms 76648 KB Output is correct
9 Correct 147 ms 52060 KB Output is correct
10 Incorrect 16 ms 31616 KB Output isn't correct
11 Halted 0 ms 0 KB -

Subtask #6
0 / 44.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 16 ms 31596 KB Output isn't correct
2 Halted 0 ms 0 KB -