var reader = require('readline').createInterface({
    input: process.stdin,
    output: process.stdout
});

var args = [];

reader.on('line', function (input) {
  args.push(input);
});


reader.on('close', function () {
    var str = args[0].split(" ");
    console.log("A" + str[1].substr(0, 1) + "C");
});
