Cod sursa(job #1830996)

Utilizator TibixbAndrei Tiberiu Tibixb Data 17 decembrie 2016 12:07:31
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;
int n, k[NMAX], x, y, s[NMAX], sol[NMAX];
vector<int> G[NMAX];
bool u[NMAX];
ifstream cin("cerere.in");
ofstream cout("cerere.out");
void dfs(int nod, int nivel)
{
    s[nivel] = nod;

    if(k[nod] == 0)
    {
        sol[nod] = 0;
    }else
    {
        int ki = s[nivel - k[nod]];
        sol[nod] = 1 + sol[ki];
    }

    for(int i = 0; i < G[nod].size(); i++)
    {
        int fiu = G[nod][i];
        dfs(fiu, nivel + 1);
    }
}
int main()
{
    cin >> n;
    for(int i = 1; i <= n; i++)
    {
        cin >> k[i];
    }
    for(int i = 1; i < n; i++)
    {
        cin >> x >> y;
        G[x].push_back(y);
        u[y] = true;
    }

    int rad = 0;
    for(int i = 1; i <= n; i++)
    {
        if(!u[i])
        {
            rad = i;
            break;
        }
    }

    dfs(rad, 0);

    for(int i = 1; i <= n; i++)
    {
        cout << sol[i] << " ";
    }
    return 0;
}