function solve(input) {
    let listArr = input.shift().split(' ');

    while (input.length > 0) {
        let commands = input.shift().split(' ');
        let singleCommand = commands[0];

        switch (singleCommand) {
            case 'Remove':
                let index = +commands[1]
                if (listArr.length >= index) {
                    listArr.splice(index, 1)
                }
                break;

            case 'Add':
                let name = commands[1];
                let index2 = +commands[2];

                if (listArr.indexOf(name) === -1) {
                    listArr.push(name);
                } else {
                    listArr.splice(index2, 0, name);
                }
                break;

            case 'Export':
                let startIndex = +commands[1];
                let count = +commands[2];

                if (count <= listArr.length) {
                    for (let j = startIndex; j < count; j++) {
                        let stringy = [];
                        stringy.push(listArr[j]);
                        console.log(stringy);
                    }
                }

                else {
                    for (let j = startIndex; j < count; j++) {
                        let stringy = [];
                        stringy.push(listArr[j]);
                        console.log(stringy.toString())
                    }
                }
                break;
            case 'Print':
                let command = commands[1];

                if (command === 'Normal') {
                    console.log(`Contacts: ${listArr.join(' ')}`);
                    break;
                }

                else {
                    for (let i = 0; i < listArr.length / 2; i++) {
                        let oldElement = listArr[i];
                        let previousIndex = listArr.length - 1 - i;
                        listArr[i] = listArr[previousIndex];
                        listArr[previousIndex] = oldElement;
                    }
                    console.log(`Contacts: ${listArr.join(' ')}`);
                    break;
                }
        }
    }
}
solve([
    'Zayn Katy Ariana Avril Nick Mikolas',
    'Remove 3',
    'Add Jacob 0',
    'Export 0 3',
    'Export 3 8',
    'Print Reversed'
]
)