#include<bits/stdc++.h>
using namespace std;
int main()
{
    long long int  n,ab,a,b,c,d,flag=0;

    string s,t,p,s1,s2;
    map<char,int>mp1;
    map<char,int>mp2;
    map<char,int>mp3;
    char arr[10][10];
    cin>>n;
    while(n--){
         cin>>s>>t>>p;
         for(int i=0;i<s.length();i++){
            mp1[s[i]]++;
         }
         for(int i=0;i<t.length();i++){
            mp2[t[i]]++;
         }
         for(int i=0;i<p.length();i++){
            mp3[p[i]]++;
         }
         int flag1=0;

            int a=0;
            int cnt=0;
                for(int j=0;j<t.length();j++){
                    if(s[a]==t[j]){
                        cnt++;
                        a++;
                    }
                    if(a==(s.length())){
                        break;
                    }
            }
            if(cnt<s.length()){
                flag1=1;
            }
            for(int i=0;i<s.length();i++){
                if(mp1[s[i]]>0 && mp2[s[i]]==0){
                flag1=1;

            }
            }

         int flag=0;
         if(flag1){
            cout<<"NO"<<endl;
         }
         else{
         for(int i=0;i<t.length();i++){
            if(mp1[t[i]]>mp2[t[i]]){
                flag=1;
                break;
            }

            else if(mp2[t[i]]>mp1[t[i]]){
                int v=mp2[t[i]]-mp1[t[i]];
                if(mp3[t[i]]>=v){
                    continue;
                }
                else {
                    flag=1;
                    break;
                }
            }
         }
         if(flag) cout<<"NO"<<endl;
         else cout<<"YES"<<endl;

         mp1.clear();
         mp2.clear();
         mp3.clear();
         }
    }
}

Line 23: error: bits/stdc++.h: No such file or directory
In function 'int main()':
Line 5: error: ISO C++ does not support 'long long'
compilation terminated due to -Wfatal-errors.