function solve(input) {

    let favouriteBook = input.shift();
    let numBook = Number(input.shift());

    let counter = 0;
    let isBookFound = false;


    while (counter < numBook) {
        let nextBook = input.shift();
        if (nextBook == favouriteBook) {
            isBookFound = true;
            console.log(`You checked ${counter} books and found it.`)
            break;
        }
        counter++;
        nextBook = input.shift();
    }
    if (!isBookFound) {
        console.log(`The book you search is not here!`);
        console.log(`You checked ${numBook} books.`);
    }
}