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1986.cpp
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#include <bits/stdc++.h>
using namespace std;
/* TYPES */
#define ll long long
#define pii pair<int, int>
#define pll pair<long long, long long>
#define vi vector<int>
#define vll vector<long long>
#define mii map<int, int>
#define si set<int>
#define sc set<char>
/* FUNCTIONS */
#define f(i,s,e) for(long long int i=s;i<e;i++)
#define cf(i,s,e) for(long long int i=s;i<=e;i++)
#define rf(i,e,s) for(long long int i=e-1;i>=s;i--)
#define pb push_back
#define eb emplace_back
/* PRINTS */
template <class T>
void print_v(vector<T> &v) { for (auto x : v) cout << x << " "; }
/* UTILS */
#define MOD 1000000007
#define PI 3.1415926535897932384626433832795
#define read(type) readInt<type>()
ll min(ll a,int b) { if (a<b) return a; return b; }
ll min(int a,ll b) { if (a<b) return a; return b; }
ll max(ll a,int b) { if (a>b) return a; return b; }
ll max(int a,ll b) { if (a>b) return a; return b; }
ll gcd(ll a,ll b) { if (b==0) return a; return gcd(b, a%b); }
ll lcm(ll a,ll b) { return a/gcd(a,b)*b; }
string to_upper(string a) { for (int i=0;i<(int)a.size();++i) if (a[i]>='a' && a[i]<='z') a[i]-='a'-'A'; return a; }
string to_lower(string a) { for (int i=0;i<(int)a.size();++i) if (a[i]>='A' && a[i]<='Z') a[i]+='a'-'A'; return a; }
bool prime(ll a) { if (a==1) return 0; for (int i=2;i<=round(sqrt(a));++i) if (a%i==0) return 0; return 1; }
/* All Required define Pre-Processors and typedef Constants */
typedef long int int32;
typedef unsigned long int uint32;
typedef long long int int64;
typedef unsigned long long int uint64;
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////ASLI MAAL////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
int solve()
{
ll n,m,a;
cin>>n>>m;
string s,c;
cin>>s;
vll v;
set<ll> st;
f(i,0,m){
cin>>a;
if(st.find(a)==st.end()){
v.pb(a);
st.insert(a);
}
}
cin>>c;
sort(v.begin(),v.end());
sort(c.begin(),c.end());
f(i,0,v.size()){
s[v[i]-1] = c[i];
}
cout<<s<<endl;
return 0;
}
/* Main() function */
int main()
{
ios_base::sync_with_stdio(false);
cin.tie(NULL);
int tc=1;
cin>>tc;
while(tc--)
{
solve();
}
return 0;
}