Cod sursa(job #1083409)

Utilizator leontinLeontin leontin Data 15 ianuarie 2014 22:53:35
Problema Cerere Scor 100
Compilator cpp Status done
Runda Teme Pregatire ACM Unibuc 2013 Marime 0.74 kb
#include<fstream>
#include<vector>
#include<queue>
using namespace std;
vector<int> v[100001];
int sol[100001],a[100001],que[100001],last=0;

    int t[100001];
void dfs(int nod)
{
    last++;
    que[last]=nod;
    int i;
    sol[nod]=sol[que[last-a[nod]]]+1;
    for(i=0;i<v[nod].size();i++)
    dfs(v[nod][i]);
    last--;
}
int main()
{
    ifstream f("cerere.in");
    ofstream g("cerere.out");
    int n,i,x,y;
    f>>n;
    int star;
    for(i=1;i<=n;i++)
    f>>a[i];

    for(i=1;i<n;i++)
    {
        f>>x>>y;
        t[y]=1;
        v[x].push_back(y);
    }
     for(i=1;i<=n;i++)
    if(t[i]==0)
    {
        star=i;
        break;
    }
    dfs(star);
    for(i=1;i<=n;i++)
    g<<sol[i]-1<<" ";
}