#include <iostream>
#include <cstdlib>
using namespace std;

//Input a series of characters, make sure that each one has even parity,
//and output them without the parity bit.

int main()
{
	for (int n {1};; ++n) {
		char c {'\0'};   //Put 00000000 into c.
		cin >> c;

		if (!cin) {
			break;  //Assume the input failed because we reached 
		}	        //end of input

		int count {0};  //count how many of the bits of c are 1's
		
		for (int i {0}; i < 8; ++i) {  //Loop through the 8 bits of c.
			if ((c >> i) & 0x1) {  //if bit number i is 1
				++count;
			}
		}

		if (count % 2 == 1) {   //if count is odd
			cerr << "\n";
			cerr << "Byte number " << n << " had odd parity.\n";
			return EXIT_FAILURE;
		}

		//Turn off bit 7 of c.  0x7F is 01111111
		c &= 0x7F;      //means c = c & 0x7F;
		cout << c;
	}

	return EXIT_SUCCESS;
}