Submission #401840

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
401840	2021-05-10 21:35:51	gevacrt	Network (BOI15_net)	C++17	0 / 100	1 ms	320 KiB

net

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#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;
#define INF INT_MAX
#define MOD 1000000007
#define all(x) x.begin(), x.end()
vvi adj; vii bb;
vi solve(int u, int p){
    if(adj[u].size() == 1) return {u};
    vi vec;
    for(auto v : adj[u]){
        if(v == p) continue;
        vi nvec = solve(v, u);
        if(vec.size() and vec.size()+nvec.size() > 2-(u==p)){
            bb.push_back({vec.back(), nvec.back()});
            vec.pop_back(); nvec.pop_back();
 
 
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Compilation message (stderr)

net.cpp: In function 'int main()':
net.cpp:60:21: warning: 'ROOT' may be used uninitialized in this function [-Wmaybe-uninitialized]
   60 |     solve(ROOT, ROOT);
      |                     ^

• Subtask 1: 0 / 18
• Subtask 2: 0 / 45
• Subtask 3: 0 / 37