#include <bits/stdc++.h>
using namespace std;
int ji(string n){
    int cnt=0;
    for (int i=0;i<n.length();i+=2)cnt+=(int)(n[i]-'0');
    return cnt;
}
int ou(string n){
    int cnt=0;
    for (int i=1;i<n.length();i+=2)cnt+=(int)(n[i]-'0');
    return cnt;
}
int main(){
    int n;
    cin>>n;
    string a[n];
    for (int i=0;i<n;i++){
        cin>>a[i];
        if (ji(a[i])==ou(a[i]))cout<<"Yes\n";
        else cout<<"No\n";
    }
}