#include "split.h"
#include <bits/stdc++.h>
using namespace std;
vector<int> adj[100000], tree[100000], ans;
int node_cnt, num[100000], low[100000], cnt[100000], parent[100000], G[100000];
void dfs(int c)
{
num[c]=low[c]=++node_cnt;
cnt[c]=1;
for(auto n: adj[c]) {
if(num[n]==0) {
parent[n]=c;
tree[n].push_back(c);
tree[c].push_back(n);
dfs(n);
low[c]=min(low[c],low[n]);
cnt[c]+=cnt[n];
}
else if(c!=parent[n]) low[c]=min(low[c],num[n]);
}
}
int centroid(int c)
{
for(auto n: tree[c]) if(parent[c]==c && 2*cnt[n]>cnt[0]) return centroid(n);
return c;
}
vector<int> find_split(int n, int a, int b, int c, vector<int> p, vector<int> q)
{
vector<pair<int,int>> V;
queue<int> Q;
int tot=0;
V.emplace_back(a,1);
V.emplace_back(b,2);
V.emplace_back(c,3);
sort(V.begin(),V.end());
for(int i=0;i<p.size();i++) {
adj[p[i]].push_back(q[i]);
adj[q[i]].push_back(p[i]);
}
dfs(0);
c=centroid(0);
ans.resize(n);
for(auto n: tree[c]) {
if(parent[n]==c && cnt[n]>=V[1].first || parent[c]==n && cnt[0]-cnt[c]>=V[1].first) {
ans[n]=V[1].second;
ans[c]=V[0].second;
Q.push(n);
V[1].first--;
V[0].first--;
while(!Q.empty() && V[1].first) {
int c=Q.front();
Q.pop();
for(auto n: tree[c]) if(ans[n]==0 && V[1].first) {
ans[n]=ans[c];
V[1].first--;
Q.push(n);
}
}
Q.push(c);
while(!Q.empty() && V[0].first) {
int c=Q.front();
Q.pop();
for(auto n: tree[c]) if(ans[n]==0 && V[0].first) {
ans[n]=ans[c];
V[0].first--;
Q.push(n);
}
}
for(auto &v: ans) if(v==0) v=V[2].second;
return ans;
}
else if(parent[n]==c && cnt[n]>=V[0].first || parent[c]==n && cnt[0]-cnt[c]>=V[0].first) {
ans[n]=V[0].second;
ans[c]=V[1].second;
V[1].first--;
V[0].first--;
Q.push(n);
while(!Q.empty() && V[0].first) {
int c=Q.front();
Q.pop();
for(auto n: tree[c]) if(ans[n]==0 && V[0].first) {
ans[n]=ans[c];
V[0].first--;
Q.push(n);
}
}
Q.push(c);
while(!Q.empty() && V[1].first) {
int c=Q.front();
Q.pop();
for(auto n: tree[c]) if(ans[n]==0 && V[1].first) {
ans[n]=ans[c];
V[1].first--;
Q.push(n);
}
}
for(auto &v: ans) if(v==0) v=V[2].second;
return ans;
}
}
memset(G,-1,sizeof(G));
G[c]=0;
G[parent[c]]=1;
Q.push(parent[c]);
while(!Q.empty()) {
int c=Q.front();
Q.pop();
for(auto n: tree[c]) if(G[n]==-1) {
G[n]=G[c];
Q.push(n);
}
}
tot=n-cnt[c];
for(auto n: tree[c]) if(parent[n]==c && low[n]<low[c]) {
G[n]=1;
Compilation message
split.cpp: In function 'std::vector<int> find_split(int, int, int, int, std::vector<int>, std::vector<int>)':
split.cpp:41:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for(int i=0;i<p.size();i++) {
~^~~~~~~~~
split.cpp:49:19: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
if(parent[n]==c && cnt[n]>=V[1].first || parent[c]==n && cnt[0]-cnt[c]>=V[1].first) {
~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
split.cpp:77:24: warning: suggest parentheses around '&&' within '||' [-Wparentheses]
else if(parent[n]==c && cnt[n]>=V[0].first || parent[c]==n && cnt[0]-cnt[c]>=V[0].first) {
~~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~
split.cpp:120:9: error: expected '}' at end of input
G[n]=1;
^
split.cpp:120:9: error: expected '}' at end of input
split.cpp:120:9: warning: control reaches end of non-void function [-Wreturn-type]
G[n]=1;
^
