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Cod sursa(job #807560)
#include <fstream>
#include <vector>
using namespace std;
ifstream in("cerere.in");
ofstream out("cerere.out");
const int N=100001;
vector <int> v[N];
int n, k[N], sol[N], a[N];
void citire()
{
int iTemp1, iTemp2;
in>>n;
for(int i=1;i<=n;i++)
in>>k[i];
for(int i=0;i<n;i++)
{
in>>iTemp1>>iTemp2;
v[iTemp1].push_back(iTemp2);
}
}
void dfs(size_t x, int lvl)
{
if(k[x]==0)
{
sol[x]=0;
a[lvl]=0;
}
else
{
sol[x]=a[lvl-k[x]]+1;
a[lvl]=a[lvl-k[x]]+1;
}
for(size_t i=0;i<v[x].size();i++)
dfs(v[x][i],lvl+1);
}
int main()
{
citire();
dfs(1,0);
for(int i=1;i<=n;i++)
out<<sol[i]<<' ';
in.close();
out.close();
return 0;
}