Submission #639380

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
639380	2022-09-09 19:17:46	3omar_ahmed	Network (BOI15_net)	C++17	100 / 100	418 ms	48496 KiB

net

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/**
 * author: 3omar_ahmed
 * date: 09-09-2022
 * Expert When :)
 */
#include <bits/stdc++.h>
using namespace std ;
#define int long long
#define endl '\n'
#define all(a) a.begin() , a.end()
#define alr(a) a.rbegin() , a.rend()
int n ;
vector < vector < int >> adj(500001);
vector < int > a;
void dfs(int node , int par){
    if(adj[node].size() == 1){
        a.push_back(node);
    }
    for(auto i : adj[node]){
        if(i == par) continue ;
        dfs(i , node);
    }
}
signed main(){
    ios_base::sync_with_stdio(0); cin.tie(0);cout.tie(0);
    cin >> n;
    for(int i = 1 ; i < n ; i++){
        int u , v;
        cin >> u >> v;
 
 
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Compilation message (stderr)

net.cpp: In function 'int main()':
net.cpp:38:23: warning: comparison of integer expressions of different signedness: 'long long int' and 'std::vector<long long int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   38 |     for(int i = 0 ; i < a.size() / 2 ; i ++){
      |                     ~~^~~~~~~~~~~~~~

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