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Cod sursa(job #780828)
#include<fstream>
using namespace std;
ifstream f("cerere.in");
ofstream g("cerere.out");
int n,i,j,k,a,b,q[100001],lg[100001],incrm,imax,ancestor;
int m[20][100001],ans[100001];
int main()
{f>>n;
for(i=1; i<=n; i++)
f>>q[i];
for(i=1; i<=n-1; i++)
{f>>a>>b;
m[0][b]=a;}
incrm=1;
i=0;
while(incrm)
{i++;
incrm=0;
for(j=1; j<=n; j++)
{m[i][j]=m[i-1][m[i-1][j]];
if(m[i][j]!=0)
incrm=1;}
}
imax=i-1;
for(i=2; i<=n; i++)
lg[i]=lg[i/2]+1;
/*for(i=0; i<=imax; i++)
{for(j=1; j<=n; j++)
g<<m[i][j]<<" ";
g<<endl;} */
for(k=1; k<=n; k++)
{j=k; // ancestor=q[k];
while(q[j]!=0)
{ancestor=q[j];
ans[k]++;
while(ancestor)
{i=lg[ancestor];
j=m[i][j];
ancestor=ancestor-(1<<i);}
}
}
for(k=1; k<=n; k++)
g<<ans[k]<<" ";
f.close();
g.close();
return 0;}