https://codeforces.com/problemset/problem/1157/B
#include<bits/stdc++.h>
using namespace std;
int a[15];
int main(void)
{
int n; cin>>n;
string s; cin>>s;
for(int i=1;i<=9;i++) cin>>a[i];
for(int i=0;i<s.size();i++)
{
int temp1=s[i]-'0';
int temp2=a[temp1];
if(temp2>temp1)
{
s[i]='0'+temp2;
int j=i+1;
while(j<s.size())
{
int temp1=s[j]-'0';
int temp2=a[temp1];
if(temp2>=temp1) s[j]='0'+temp2;
else break;
j++;
}
break;
}
}
cout<<s<<endl;
return 0;
}