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Cod sursa(job #356878)
#include <stdio.h>
#include <stdlib.h>
#define N 100005
int *a[N],b[N][18],f[N],T,ff[N],v[N];
int n;
void citire(){
int i,x,y;
scanf("%d",&n);
for(i=1;i<=n;i++){
scanf("%d",&f[i]);
a[i]=(int*)malloc(4);a[i][0]=0;
}
for(i=1;i<n;i++){
scanf("%d%d",&x,&y);
b[y][0]=x;
ff[y]=1;
a[x][0]++;
a[x]=(int*)realloc(a[x],(a[x][0]+2)*4);
a[x][a[x][0]]=y;
}
for(i=1;i<=n;i++)
if(!ff[i]) {
T=i;
return;
}
}
void dfs(int x,int k){
v[k]=x;
if(f[x]) f[x]=1+f[v[k-f[x]]];
for(int i=1;i<=a[x][0];i++)
dfs(a[x][i],k+1);
}
void afisare(){
for(int i=1;i<=n;i++)
printf("%d ",f[i]);
}
int main(){
freopen("cerere.in","r",stdin);
freopen("cerere.out","w",stdout);
citire();
dfs(T,1);
afisare();
return 0;
}