| # | 제출 시각 | 아이디 | 문제 | 언어 | 결과 | 실행 시간 | 메모리 |
|---|---|---|---|---|---|---|---|
| 1329441 | liptonek | Make them Meet (EGOI24_makethemmeet) | C++20 | 23 ms | 1908 KiB |
#include <bits/stdc++.h>
using namespace std;
struct Swap
{
int u,v;
};
int n,m;
bool visited[105];
int parent[105];
vector<int> adj[105];
vector<int> order;
void bfs(int start)
{
queue<int> q;
q.push(start);
visited[start]=true;
parent[start]=-1;
while(!q.empty())
{
int u=q.front();
q.pop();
order.push_back(u);
for(int v : adj[u])
{
if(!visited[v])
{
visited[v]=true;
parent[v]=u;
q.push(v);
}
}
}
}
int main()
{
ios_base::sync_with_stdio(0);
cin.tie(0);
cin>>n>>m;
for(int i=0; i<m; i++)
{
int u,v;
cin>>u>>v;
adj[u].push_back(v);
adj[v].push_back(u);
}
bfs(0);
vector<Swap> plan;
for(int i=1; i<(int)order.size(); i++)
{
int curr=order[i];
while(curr!=0 && curr!=-1)
{
plan.push_back({curr,parent[curr]});
curr=parent[curr];
}
}
cout<<plan.size()<<endl;
for(auto const& m : plan)
{
vector<int> colors(n);
colors[m.u]=0;
colors[m.v]=0;
int next=1;
for(int i=0; i<n; i++)
{
if(i!=m.u && i!=m.v)
{
colors[i]=next++;
}
}
for(int i=0; i<n; i++)
{
cout<<colors[i]<<(i==n-1 ? "" : " ");
}
cout<<endl;
}
return 0;
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