# | Submission time | Handle | Problem | Language | Result | Execution time | Memory |
---|---|---|---|---|---|---|---|
41218 | 2018-02-14T04:05:07 Z | wzy | Network (BOI15_net) | C++14 | 10 ms | 12132 KB |
#include <bits/stdc++.h> using namespace std; #define F first #define S second #define int long long // LEMBRAR DE TROCAR CASO PROBLEMA DE MEMORIA #define pii pair<int,int> #define ieps (int) 1e6 #define eps (int) 1e9 #define mp make_pair #define pb push_back int n; vector<int> adj[500005]; vector<int> ans; int32_t main(){ int n; cin>>n; int root = 0; for(int i = 0 ; i <n - 1; i++){ int x ,y; cin>>x>>y; adj[x].pb(y); adj[y].pb(x); root = x; } for(int i = 1 ; i <=n ; i++){ if(adj[i].size() == 1) ans.pb(i); } cout<< (ans.size()/2) + (ans.size()%2) << endl; for(int i = 0 ; i <( ans.size() / 2 + ans.size()%2) ; i++){ if(i == ans.size()/2 && (ans.size())%2){ cout<<ans[i] <<" " << ans[0]<<endl; continue; } cout<<ans[i] <<" " << ans[ans.size() - i - 1]<<endl; } }
Compilation message
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 10 ms | 12024 KB | Output is correct |
2 | Incorrect | 10 ms | 12132 KB | Breaking single line is causing network to disconnect. |
3 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 10 ms | 12024 KB | Output is correct |
2 | Incorrect | 10 ms | 12132 KB | Breaking single line is causing network to disconnect. |
3 | Halted | 0 ms | 0 KB | - |
# | Verdict | Execution time | Memory | Grader output |
---|---|---|---|---|
1 | Correct | 10 ms | 12024 KB | Output is correct |
2 | Incorrect | 10 ms | 12132 KB | Breaking single line is causing network to disconnect. |
3 | Halted | 0 ms | 0 KB | - |