#include <bits/stdc++.h> //Andrei Alexandru a.k.a Sho
#include "dreaming.h"
using ll=int;
using ld=long double;
int const INF=1000000005;
//ll const LINF=1000000000000000005;
ll const mod=1000000007;
ld const PI=3.14159265359;
#pragma GCC optimize("O3")
#pragma GCC optimize("Ofast")
#define f first
#define s second
#define pb push_back
#define mp make_pair
#define endl '\n'
#define CODE_START ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
using namespace std;
ll mxN=1e5+5,viz[mxN];
vector<pair<ll,ll>>g[100005];
vector<ll>comp;
ll bg;
map<ll,ll> bfs(ll node){
map<ll,ll>dist;
dist[node]=0;
vector<bool>check(mxN,false);
check[node]=true;
queue<ll>q;
q.push(node);
ll mx=0;
while(!q.empty()){
ll x=q.front();
comp.pb(x);
viz[x]=1;
q.pop();
for(auto it : g[x]){
if(!check[it.f]){
dist[it.f]=dist[x]+it.s;
q.push(it.f);
check[it.f]=true;
if(dist[it.f]>mx){
mx=dist[it.f];
bg=it.f;
}
}
}
}
return dist;
}
int travelTime(int n,int m,int l,int a[], int b[], int t[]){
for(ll i=0;i<n;i++)
{
g[i].clear();
viz[i]=0;
}
for(ll i=0;i<m;i++)
{
g[a[i]].pb(mp(b[i],t[i]));
g[b[i]].pb(mp(a[i],t[i]));
}
vector<pair<ll,ll>>v;
for(ll i=0;i<n;i++)
{
if(viz[i]){
continue;
}
bg=i;
bfs(i);
map<ll,ll>X=bfs(bg);
comp.clear();
map<ll,ll>Y=bfs(bg);
ll ans=bg;
ll mx=max(X[ans],Y[ans]);
for(auto it : comp){
if(max(X[it],Y[it])<mx){
mx=max(X[it],Y[it]);
ans=it;
}
}
v.pb(mp(mx,ans));
}
sort(v.begin(),v.end());
for(ll i=1;i<v.size();i++)
{
g[v[i].s].pb(mp(v[0].s,l));
g[v[0].s].pb(mp(v[i].s,l));
}
bg=0;
bfs(0);
map<ll,ll>X=bfs(bg);
map<ll,ll>Y=bfs(bg);
int ans=0;
for(ll i=0;i<n;i++)
{
ans=max(ans,max(X[i],Y[i]));
}
return ans;
}
Compilation message
dreaming.cpp:18:21: error: array bound is not an integer constant before ']' token
18 | ll mxN=1e5+5,viz[mxN];
| ^
dreaming.cpp: In function 'std::map<int, int> bfs(ll)':
dreaming.cpp:33:5: error: 'viz' was not declared in this scope
33 | viz[x]=1;
| ^~~
dreaming.cpp: In function 'int travelTime(int, int, int, int*, int*, int*)':
dreaming.cpp:53:9: error: 'viz' was not declared in this scope
53 | viz[i]=0;
| ^~~
dreaming.cpp:63:8: error: 'viz' was not declared in this scope
63 | if(viz[i]){
| ^~~
dreaming.cpp:82:13: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<std::pair<int, int> >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
82 | for(ll i=1;i<v.size();i++)
| ~^~~~~~~~~
