var Main = function (input) {
	var elements = input.split("");
	for (var i = 0; i < elements.length; i++) {
		var num = elements[i] - (i + 1);
		if (num < 65) {
			num = (num - 65) + 91;
		}
		console.log(String.fromCharCode(num));
	}
};

//Don't Edit this code
Main(require("fs").readFileSync("/dev/stdin", "utf16"));