#include <iostream>
#include <string>
using std::cin; using std::cout; using std::endl; using std::string;

void substr_delete(string &s, const string &del);

int main(void)
{
	string str = "Authentic Symphony", substr = "then";
	substr_delete(str, substr);
	cout << str << endl;
	return 0;
}

void substr_delete(string &s, const string &del)
{
	for (string::iterator beg = s.begin();
		beg != s.end();
		++beg) {
		string::const_iterator begov = del.begin();
		if (*beg == *begov) {
			string::iterator pos = beg;
			string::size_type cnt = 0;
			for (string::iterator copybeg = beg;
				copybeg != s.end() && begov != del.end();
				++copybeg, ++begov) {
				if (*copybeg == *begov)
					++cnt;
			}
		if (cnt == del.size()) {
			beg = s.erase(pos, pos + cnt);
			--beg;
		}
		}
	}
}