#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;
void dfs1(int x , int p = -1 , int d = 0)
{
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;
void dfs2(int x , int p = -1 , int d = 0)
{
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]});
}
for(int i = 0 ; i < N ; i++)
{
if(!vis[i])
{
y = 0;
mx = 0;
dfs1(i);
mx = 0;
z = 0;
dfs2(y);
int sm = 0;
int mid = z;
int mn = mx;
while(par[z].first != -1)
{
sm += par[z].second;
if(abs(mx - 2*sm) <= mn)
{
mid = par[z].first;
mn = abs(mx - 2*sm);
}
z = par[z].first;
}
center.push_back(mid);
}
}
for(int i = 0 ; i + 1 < (int)center.size() ; i++)
{
adj[center[i]].push_back({center[i+1] ,L});
adj[center[i+1]].push_back({center[i] , L});
}
y = 0;
mx = 0;
vis.assign(N , 0);
dfs1(0);
mx = 0;
z = 0;
dfs2(y);
return mx;
}
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
28 ms |
17492 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
600 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
28 ms |
17492 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
11 ms |
9564 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
1 ms |
600 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |
# |
결과 |
실행 시간 |
메모리 |
Grader output |
1 |
Runtime error |
28 ms |
17492 KB |
Execution killed with signal 11 |
2 |
Halted |
0 ms |
0 KB |
- |