#include <bits/stdc++.h>
using namespace std;
#define dbgv(v) cout<<#v<<" = "; f(i,0,v.size()) cout<<v[i]<<" "; cout<<endl
#define dbga(a,x,y) cout<<#a<<" = "; f(i,x,y) cout<<a[i]<<" "; cout<<endl
#define erorp(x) cout<<#x<<"={"<<(x.F)<<" , "<<x.S<<"}"<<endl
#define eror(x) cout<<#x<<'='<<(x)<<endl
#define f_(i,a,b) for(int i=a;i>=b;i--)
#define f(i,a,b) for(int i=a;i<b;i++)
#define nb(x) __builtin_popcount(x)
#define all(v) v.begin(),v.end()
#define bit(n,k) (((n)>>(k))&1)
#define Add(x,y) x=(x+y)%mod
#define maxm(a,b) a=max(a,b)
#define minm(a,b) a=min(a,b)
#define lst(x) x[x.size()-1]
#define sz(x) int(x.size())
#define mp make_pair
#define ll long long
#define pb push_back
#define S second
#define F first
const int N=1e5+99;
int n,m,rt,a[N],W[N],U[N],V[N],vis[N];
char C[N];
vector<int> vec,g[N];
vector<pair<int,pair<int,int>>> G[N];
set<int> smn[N],smx[N];
map<pair<int,int>,int> mark;
void output(int s,int t,int u,int v){
int res;
cout<<s<<" "<<t<<" ";
if(u==0 || v==0) res=max(u,v);
else res=v;
maxm(res,1);
cout<<vec[res-1];
cout<<endl;
}
void dfs(int u,int p){
int x=0;
for(auto v : g[u]){
if(v==p) continue ;
dfs(v,u);
if(smn[v].size()+smx[v].size()>smn[x].size()+smx[x].size()){
x=v;
}
}
swap(smn[u],smn[x]);
swap(smx[u],smx[x]);
for(auto p : smn[x]) smn[u].insert(p);
for(auto p : smx[x]) smx[u].insert(p);
smn[x].clear();
smx[x].clear();
for(auto v : g[u]){
if(v==p || v==x) continue ;
for(auto x : smn[v]){
if(smn[u].find(x)!=smn[u].end()) smn[u].erase(x);
else smn[u].insert(x);
}
for(auto x : smx[v]){
if(smx[u].find(x)!=smx[u].end()) smx[u].erase(x);
else smx[u].insert(x);
}
}
if(u==1) return ;
int l=0,r=0;
if(smn[u].size()) l=*smn[u].rbegin();
if(smx[u].size()) r=*smx[u].begin();
//cout<<p<<" "<<u<<" -> "<<l<<" "<<r<<endl;
G[l].pb({r,{u,p}});
G[r].pb({l,{u,p}});
}
void dfs1(int u,int p){
vis[u]=1;
for(auto v : G[u]){
if(vis[v.F]){
if(p!=v.F) rt=v.F;
continue ;
}
dfs1(v.F,u);
}
}
void dfs2(int u){
vis[u]=2;
for(auto p : G[u]){
int v=p.F,s=p.S.F,t=p.S.S;
if(!mark[mp(s,t)]){
mark[mp(s,t)]=1;
output(s,t,u,v);
}
if(vis[v]<2){
dfs2(v);
}
}
}
void solve(int u){
rt=0;
dfs1(u,u);
dfs2(rt);
}
int main(){
ios:: sync_with_stdio(0), cin.tie(0), cout.tie(0);
cin>>n;
f(i,1,n){
int u,v;
cin>>u>>v;
g[u].pb(v);
g[v].pb(u);
}
cin>>m;
f(i,0,m){
cin>>C[i]>>U[i]>>V[i]>>W[i];
vec.pb(W[i]);
}
sort(all(vec));
f(i,0,m){
W[i]=lower_bound(all(vec),W[i])-vec.begin()+1;
int u=U[i],v=V[i],w=W[i];
if(C[i]=='M'){
smx[u].insert(w);
smx[v].insert(w);
}
else{
smn[u].insert(w);
smn[v].insert(w);
}
}
dfs(1,1);
f(i,0,m+1){
if(!vis[i]){
solve(i);
}
}
}
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
8 ms |
14432 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Execution timed out |
1014 ms |
41984 KB |
Time limit exceeded |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
299 ms |
28140 KB |
Unexpected end of file - int32 expected |
| 2 |
Halted |
0 ms |
0 KB |
- |
| # |
Verdict |
Execution time |
Memory |
Grader output |
| 1 |
Incorrect |
8 ms |
14432 KB |
Output isn't correct |
| 2 |
Halted |
0 ms |
0 KB |
- |
