Cod sursa(job #2125080)

Utilizator Laura_CorneiLaura Maria Cornei Laura_Cornei Data 7 februarie 2018 22:16:53
Problema Cerere Scor 100
Compilator cpp Status done
Runda Arhiva de probleme Marime 1.1 kb
#include <fstream>
#include <vector>
#define nmax 100005
using namespace std;
fstream f1("cerere.in", ios::in);
fstream f2("cerere.out", ios::out);
int n, k[nmax], t[nmax], rad, viz[nmax], g[nmax], stiva[nmax], vf;
vector <int> v[nmax];
void citire()
{
    int i, x, y;
    f1>>n;
    for(i=1; i<=n; i++)
        f1>>k[i];
    for(i=1; i<n; i++)
    {
        f1>>x>>y;
        t[y]=x;
        v[x].push_back(y);
    }
    for(i=1; i<=n; i++)
        if(t[i]==0) {rad=i; break;}

}
void dfs()
{
    int nod;
    vector <int> :: iterator it;
    while(vf!=0)
    {
        nod=stiva[vf];
        for(it=v[nod].begin(); (it!=v[nod].end())&&(viz[*it]); ++it);
        if(it==v[nod].end()) vf--;///te intorci recursiv
        else
        {
           vf++;
           stiva[vf]=*it;
           viz[*it]=1;
           g[*it]=g[stiva[vf- k[*it]]]+1;
        }
    }
}
void afisare()
{
    int i;
    for(i=1; i<=n; i++)
        f2<<g[i]-1<<' ';
}
int main()
{
    citire();
    vf=1;
    stiva[vf]=rad;
    viz[rad]=1;
    g[rad]=1;
    dfs();
    afisare();
    return 0;
}