#include<bits/stdc++.h>
using namespace std;
bool f[10000005];
int n,c,d,q;
int main() {
	freopen("birds.in","r",stdin);
	freopen("birds.out","w",stdout);
	scanf("%d",&n);
    vector<vector<int>> e(n+1);
    int x,y;
    for(int i=1;i<n;i++){
        scanf("%d%d",&x,&y);
        e[x].push_back(y);
		e[y].push_back(x);
    }
    for(int i=1;i<=n;i++){
       	scanf("%d",&f[i]);
        if(f[i]) c++;
    }
    for(int i=1;i<=n;i++){
        if(!f[i]) continue;
        for(int v:e[i]){
            if(v>i&&f[v]){
                d++;
            }
        }
    }
    printf("%d\n",c-d);
    scanf("%d",&q);
    while(q--){
        int x;
        scanf("%d",&x);
        if(f[x]){
            c--;
            for(int v:e[x]){
                if(f[v]) d--;
            }
        }else{
            c++;
            for(int v:e[x]){
                if(f[v]) d++;
            }
        }
        f[x]=!f[x];
        printf("%d\n",c-d);
    }
    return 0;
}