var lines = require("fs").readFileSync("/dev/stdin", "utf8").split("\n");
var A = lines[0];
var B = lines[1];

var intA = parseInt(A, 2);
var intB = parseInt(B, 2);

if((intA % 2 === 1) && (intB % 2 === 1)){
    console.log("Odd");
} else {
    console.log("Even");
}