function printDeliveries(params) {
    params.pop();
    let field = params.shift().split('@');
    let santaIndex = 0;

    for (let param of params) {
        let tokens = param.split(' ');
        let jumpLength = Number(tokens[1]);
        santaIndex = (santaIndex + jumpLength) % field.length;
        if (field[santaIndex] <= 0) {
            console.log(`House ${santaIndex} will have a Merry Christmas.`);
        }
        field[santaIndex] -= 2;
    }
    console.log(`Santa's last position was ${santaIndex}.`);
    let failedHouses = 0;
    for (let house of field) {

        if (house > 0) {
            failedHouses++;
        }
    }
    if (failedHouses === 0) {
        console.log(`Mission was successful.`)
    }else{
        console.log(`Santa has failed ${failedHouses} houses.`)
    }
}