function froggySquad(arr) {

    let output = '';
    let names = arr.shift().split(' ');
    for (let iterator of arr) {
        let command = arr.shift().split(' ');
        let firstWord = command.shift();
        let secondWord = command.shift();


        if (firstWord === 'Join') {
            names.push(secondWord);
        } else if (firstWord === 'Jump') {
            let num = command.shift();
            if (num >= 0 && num < arr.length) {
                names.splice(Number(num), 0, secondWord);
            }
        } else if (firstWord === 'Dive') {
            let num = Number(secondWord);
            if (num >= 0 && num < arr.length) {
                names.splice(num, 1)
            }
        } else if (firstWord === 'First') {
            let count = Number(secondWord);
            if (count <= names.length) {
                console.log(names.slice(0, count).join(' '));
            }
        } else if(firstWord === 'Last'){
            let count = Number(secondWord);
            if (count <= names.length) {
                console.log(names.slice(names.length - 3).join(' '));
                        }

        } else if (firstWord === 'Print') {
            if (secondWord === 'Reversed') {
                output = `Frogs: ${names.reverse().join(' ')}`;

            } else if(secondWord === 'Normal'){
                 output = `Frogs: ${names.join(' ')}`;

            }
        }
        console.log(output)
    }



}

//froggySquad(['Blake Muggy Kishko', 'Join Kvachko', 'Dive 0', 'First 10', 'Print Reversed']);
froggySquad(['A B C D E F', 'Join G', 'Jump Q 3', 'Last 3', 'Dive 2', 'Print Normal']);