#include <iostream>

using namespace std; 	//introduces namespace std
int main(int argc, char *argv[] ){
	//for(register int i = 0; i < argc; i++){
	//	cout << argv[i] << "\n" ;
	//}
	char *test;
	
	while(atoi(test) != -1){
		cin >> test;
		cout << test << "\n";
	}
	return 0;
}