Cod sursa(job #1094657)

Utilizator andrettiAndretti Naiden andretti Data 29 ianuarie 2014 18:06:55
Problema Cerere Scor 100
Compilator cpp Status done
Runda Teme Pregatire ACM Unibuc 2013 Marime 0.87 kb
#include<fstream>
#include<vector>
#define pb push_back
#define maxn 100005
using namespace std;

ifstream fin("cerere.in");
ofstream fout("cerere.out");

int n,m,root,u;
int v[maxn],t[maxn],sol[maxn],uz[maxn];
int stack[maxn];
vector <int> l[maxn];

void read()
{
    int i;
    int x,y;
    fin>>n;
    for(i=1;i<=n;i++) fin>>t[i];
    for(i=1;i<n;i++)
    {
        fin>>x>>y;
        uz[y]=1;
        l[x].pb(y);
    }
    for(i=1;i<=n;i++) if(uz[i]==0) {root=i; break;}
}

void dfs(int k)
{
    v[k]=1; stack[++u]=k;
    if(t[k]) sol[k]=sol[stack[u-t[k]]]+1;

    for(unsigned int i=0;i<l[k].size();i++)
     if(v[l[k][i]]==0)
      dfs(l[k][i]);
    u--;
}

void print()
{
    for(int i=1;i<=n;i++) fout<<sol[i]<<" ";
}

int main()
{
    read();
    dfs(root);
    print();

    fin.close();
    fout.close();
    return 0;
}