oj.uz

Submission #286814

# Submission time Handle Problem Language Result Execution time Memory
286814 2020-08-31T03:47:25 Z TMJN Dreaming (IOI13_dreaming) C++17
0 / 100
 187 ms 12532 KB 
#include "dreaming.h"
#include <bits/stdc++.h>
using namespace std;

struct edge{
	int to,dist;
};

bool vis[100000];
int D[100000],DD[100000],DDD[100000];
vector<edge>E[100000];

void dfs0(int x,int from,vector<int>&v){
	vis[x]=true;
	v.push_back(x);
	for(edge e:E[x]){
		if(e.to==from)continue;
		D[e.to]=D[x]+e.dist;
		dfs0(e.to,x,v);
	}
}

void dfs1(int x,int from){
	for(edge e:E[x]){
		if(e.to==from)continue;
		DD[e.to]=DD[x]+e.dist;
		dfs1(e.to,x);
	}
}
void dfs2(int x,int from){
	for(edge e:E[x]){
		if(e.to==from)continue;
		DDD[e.to]=DDD[x]+e.dist;
		dfs2(e.to,x);
	}
}


int travelTime(int N, int M, int L, int a[], int b[], int d[]) {
	for(int i=0;i<M;i++){
		E[a[i]].push_back({b[i],d[i]});
		E[b[i]].push_back({a[i],d[i]});
	}
	vector<int>v;
	for(int i=0;i<N;i++){
		if(!vis[i]){
			vector<int>V;
			dfs0(i,i,V);
			pair<int,int>p={-1,-1};
			for(int j:V){
				p=max(p,{D[j],j});
			}
			dfs1(p.second,p.second);
			pair<int,int>pp={-1,-1};
			for(int j:V){
				pp=max(pp,{DD[j],j});
			}
			dfs2(pp.second,pp.second);
			int mn=2000000000;
			for(int j:V){
				mn=min(mn,max(DD[j],DDD[j]));
			}
			v.push_back(mn);
			cout<<i<<' '<<mn<<endl;
		}
	}
	sort(v.begin(),v.end(),greater<>());
	if(v.size()==1){
		return v.front();
	}
	else if(v.size()==2){
		return max(v[0],v[1]+L);
	}
	else{
		return max({v[0],v[1]+L,v[2]+L+L});
	}
}

Subtask #1
0 / 14.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 12532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #2
0 / 10.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 12532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #3
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 12532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 187 ms 7028 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 12532 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Incorrect 65 ms 12532 KB Output isn't correct
2 Halted 0 ms 0 KB -