
function Main(input) {
    var A = parseInt(input[0], 10);
    var B = parseInt(input[1], 10);

    if (A >= 13) {
        console.log(B);
    } else if (6 <= A && A <= 12) {
        console.log(B/2);
    } else {
        console.log('0');
    }

}

Main(require("fs").readFileSync("/dev/stdin", "utf8").trim().split(/\n|\s/));