oj.uz

답안 #715562

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
715562 2023-03-27T08:20:36 Z Baytoro 꿈 (IOI13_dreaming) C++17
18 / 100
 48 ms 15232 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;
#define fr first
#define sc second
const int N=1e5+5;
vector<pair<int,int>> g[N];
int used[N];
int D,f,ans;
void dfs(int x, int p, int y, int d){
	used[x]=1;
	if(d>D){
		f=x;
		D=d;
	}
	for(auto it: g[x]){
		if(it.fr==p) continue;
		dfs(it.fr,x,y,d+it.sc);
	}
}
int get(int x, int y, int p, int D, int d){
	if(x==y){
		ans=min(ans,max(D,d));
		return 1;
	}
	for(auto it: g[x]){
		if(it.fr==p) continue;
		if(get(it.fr,y,x,D-it.sc,d+it.sc)){
			ans=min(ans,max(D,d));
			return 1;
		}
	}
	return 0;
}
int find(int x){
	D=0,f=x;
	dfs(x,x,-1,0);
	D=0;
	int F=f;
	dfs(f,f,-1,0);
	ans=1e9;
	get(f,F,-1,D,0);
	return ans;
}
int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    for(int i=0;i<M;i++){
		g[A[i]].push_back({B[i],T[i]});
		g[B[i]].push_back({A[i],T[i]});
	}
	vector<int> vec;
	for(int i=0;i<N;i++){
		if(!used[i]){
			int c=find(i);
			vec.push_back(c);
		}
	}
	
	sort(vec.rbegin(),vec.rend());
	int ans=vec[0];
	if(vec.size()>1)
		ans=max(ans,vec[0]+vec[1]+L);
	if(vec.size()>2)
		ans=max(ans,vec[1]+vec[2]+L+L);
	return ans;
}
/*int main(){
	int n,m,l;cin>>n>>m>>l;
	int a[m]{},b[m]{},t[m]{};
	for(int i=0;i<m;i++){
		cin>>a[i]>>b[i]>>t[i];
	}
	cout<<travelTime(n,m,l,a,b,t);
}*/

Subtask #1
0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 48 ms 15232 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 48 ms 15232 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 21 ms 6092 KB Output is correct
2 Correct 20 ms 6056 KB Output is correct
3 Correct 19 ms 6104 KB Output is correct
4 Correct 25 ms 6132 KB Output is correct
5 Correct 22 ms 6076 KB Output is correct
6 Correct 33 ms 6572 KB Output is correct
7 Correct 27 ms 6316 KB Output is correct
8 Correct 19 ms 6100 KB Output is correct
9 Correct 21 ms 5980 KB Output is correct
10 Correct 23 ms 6236 KB Output is correct
11 Correct 2 ms 2644 KB Output is correct
12 Correct 4 ms 3664 KB Output is correct
13 Correct 5 ms 3664 KB Output is correct
14 Correct 4 ms 3664 KB Output is correct
15 Correct 5 ms 3664 KB Output is correct
16 Correct 5 ms 3664 KB Output is correct
17 Correct 4 ms 3544 KB Output is correct
18 Correct 7 ms 3664 KB Output is correct
19 Correct 5 ms 3664 KB Output is correct
20 Correct 2 ms 2644 KB Output is correct
21 Correct 2 ms 2644 KB Output is correct
22 Correct 2 ms 2644 KB Output is correct
23 Correct 5 ms 3664 KB Output is correct

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 2 ms 2644 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Incorrect 48 ms 15232 KB Output isn't correct
2 Halted 0 ms 0 KB -