rt

#include <bits/stdc++.h>
#include <cstdio>
#include <cstring>
using namespace std;

int main(){
	int n;
	string s;
	cin >> n >> s;
	for (int i = s.size()-1; i >= 0; i--){
		if (s[i] > '0'){
			printf("%d*%d^%d+", s[i]-'0', n, i);
		}
	}
	printf("%c ", 8);
	return 0;
}

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