#include <bits/stdc++.h>

using namespace std;

#define INF 10000000007
#define DIM 10
#define endl '\n'
#define sp " "

using ll = long long;
using ld = long double;
using pll = pair<ll,ll>;
using str = string;

ll t,n,a,b;
ll f, k,nk,ak,bk;
ll na[DIM], ba[DIM], aa[DIM];

int main(){


    cin>>t;
    while(t--) {
        cin>>n>>a>>b;
        f=0;
        if(n!=a*b) f=1;
        if(a%10==0 && b%10==0) f=1;
        nk=0;
        while(n>0) {
            na[nk] = n%10;
            n/=10;
            nk++;
        }
        ak=0; bk=0;
        while(a>0) {
            aa[ak]=(a%10);
            a/=10;
            ak++;
        }
        while(b>0) {
            ba[bk]=(b%10);
            b/=10;
            bk++;
        }
        if(nk%2!=0) f=1;
        else {
            if(bk!=ak || nk/2!=ak) f=1;
        }
        
        for(int i = 0; i<nk/2; i++) {
            ll ff=0;
            for(int j=0;j<bk;j++) {
                if(na[i]==ba[j]) {
                    ff=1;
                    ba[j]=INF;
                } 
            }
            if(ff==0) {f=1; break;}    
        }
        
        for(int i = nk/2; i<nk; i++) {
            ll ff=0;
            for(int j=0;j<ak;j++) {
                if(na[i]==aa[j]) {
                    ff=1;
                    aa[j]=INF;
                } 
            }
            if(ff==0) {f=1; break;}    
        }


        if(f==1) cout<<"NO"<<endl;
        else cout<<"YES"<<endl;
    }

    return 0;
}