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Cod sursa(job #782519)
#include <fstream>
#include<algorithm>
#include <vector>
using namespace std;
vector<int>a[100001];
int s[100001],m,n,k[100001],x,y,d[100001],r,cereri[100001];
bool sol[100001];
void df(int x)
{
s[++m]=x;
int i;
if(sol[x])
cereri[x]=0;
else
cereri[x]=cereri[s[m-k[x]]]+1;
for(i=0;i<a[x].size();i++)
df(a[x][i]);
m--;
}
int main()
{
int i;//j,k,l,max=0, min=99999, k, urm
ifstream f("cerere.in");
ofstream g("cerere.out");
f>>n;
for(i=1;i<=n;i++)
{
f>>k[i];
if(k[i]==0)
sol[i]=1;
}
for(i=1;i<n;i++)
{
f>>x>>y;
a[x].push_back(y);
d[y]++;
}
for(i=1,r=0;i<=n && !r;i++)
if(!d[i])
r=i;
df(r);
for(i=1;i<=n;i++)
g<<cereri[i]<<" ";
return 0;
}