#include <iostream>
#include <string>
using namespace std;
int main()
{
   int m;
   string n; 
   cin>>m>>n;
   int i=0;
   while(i<n.length())
   {
   		if(n[i]!='0')
   			cout<<n[i]<<"*"<<m<<"^"<<n.length()-i-1<<"+";
   	   	i++;  	  	
   }   
   cout<<'\b'<<" ";
}