#include <iostream>
using namespace std;

int main() {
	std::string routingLine = "ABC DEB MEM DEB LOL HEH PUC";
	std::string starAtsRouteDescription = "DEB";
	
    size_t found = routingLine.rfind(starAtsRouteDescription);
    if (found != string::npos) {
        routingLine.replace(found - 1, starAtsRouteDescription.length() + 1, "");
    }
    
    cout << routingLine;
        
	return 0;
}