Submission #1143263

#	Time	Username	Problem	Language	Result	Execution time	Memory
1143263		wizard_49	새로운 문제 (POI13_luk)	C++20	0 / 100	180 ms	17632 KiB

luk

#include <iostream>
#include <fstream>
#include <vector>

using namespace std;

//ifstream fin("experimental.in");

const int NMAX=300000;

vector <int> g[NMAX+1];
bool viz[NMAX+1];
int tree[NMAX+1];
int available_worker_teams;
int total_worker_teams;

void dfs(int x){
    viz[x]=1;
    for(const int &y:g[x])
        if(viz[y]==0)
        {
            if(available_worker_teams>0)
                available_worker_teams--;
            else
            {
                available_worker_teams++;
                total_worker_teams++;
            }
            dfs(y);
        }
}


int main()
{
    int a,b,n;
    cin>>n;
    for(int i=1;i<n;i++)
    {
        cin>>a>>b;
        g[a].push_back(b);
        g[b].push_back(a);
    }

    dfs(1);
    cout<<total_worker_teams<<"\n";
    return 0;
}

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