#include "dreaming.h"
#include<bits/stdc++.h>
using namespace std;
vector<vector<pair<int ,int>>> adj;
vector<int> center;
vector<bool> vis;
int mx = 0;
int y = 0;
int z = 0;
vector<int> nodes;
void dfs1(int x , int p = -1 , int d = 0)
{
nodes.push_back(x);
vis[x] = 1;
if(mx <= d)
{
mx = d;
y = x;
}
for(auto [u , c] : adj[x])
{
if(u == p)
continue;
dfs1(u , x , d + c);
}
}
vector<pair<int ,int>> par;
vector<int> dist;
void dfs2(int x , int p = -1 , int d = 0)
{
dist[x] = d;
if(mx <= d)
{
mx = d;
z = x;
}
for(auto [u , c] : adj[x])
{
if(u == p)
continue;
par[u]= {x , c};
dfs2(u , x , d + c);
}
}
int travelTime(int N, int M, int L, int A[], int B[], int T[])
{
adj.assign(N , {});
vis.assign(N , 0);
for(int i = 0 ; i < M; i++)
{
adj[A[i]].push_back({B[i] , T[i]});
adj[B[i]].push_back({A[i] , T[i]});
}
par.assign(N , {-1 , -1});
dist.assign(N , 0);
int ans = 0;
for(int i = 0 ; i < N ; i++)
{
if(!vis[i])
{
y = 0;
mx = 0;
nodes.clear();
dfs1(i);
mx = 0;
z = 0;
dfs2(y);
vector<int> a = dist;
dfs2(z);
vector<int> b = dist;
int mn = 2e9;
for(auto node : nodes)
mn = min(mn , max(a[node] , b[node]));
center.push_back(mn);
}
}
sort(center.rbegin(), center.rend());
if((int)center.size() > 1)
ans = max(ans , center[0] + center[1] + L);
if((int)center.size() > 2)
ans = max(ans , center[1] + center[2] + 2 * L);
return ans;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
42 ms |
14300 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
42 ms |
14300 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Execution timed out |
1081 ms |
7596 KB |
Time limit exceeded |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
0 ms |
344 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Incorrect |
42 ms |
14300 KB |
Output isn't correct |
2 |
Halted |
0 ms |
0 KB |
- |