Club

function club(input) {
    let neededSum = Number(input[0]);
    let profit = 0;

    for (let i = 1; i < (input.length || profit >= neededSum); i++) {
        let drink = input[i];
        if (drink === "Party!") {
            break;
        }
        let sum = drink.length * Number(input[++i]);
        if (sum % 2 === 1) {
            sum *= 0.75;
        }
        profit += sum;
    }

    if (neededSum > profit) {
        console.log(`We need ${(neededSum - profit).toFixed(2)} leva more.`);
    } else {
        console.log("Target acquired.");
    }
    console.log(`Club income - ${profit.toFixed(2)} leva.`);
}

РЕШЕНИЕ С WHILE И SHIFT():

function club(input) {
    let neededSum = Number(input.shift());
    let drink = input.shift();
    let profit = 0;

    while (drink !== "Party!" && profit < neededSum) {
        let sum = drink.length * Number(input.shift());
        if (sum % 2 === 1) {
            sum *= 0.75;
        }
        profit += sum;
        drink = input.shift();
    }

    if (neededSum > profit) {
        console.log(`We need ${(neededSum - profit).toFixed(2)} leva more.`);
    } else {
        console.log("Target acquired.");
    }
    console.log(`Club income - ${profit.toFixed(2)} leva.`);
}

И С ТЕРНАРЕН ОПЕРАТОР:

function club(input) {
    let neededSum = Number(input.shift());
    let drink = input.shift();
    let profit = 0;

    while (drink !== "Party!" && profit < neededSum) {
        let sum = drink.length * Number(input.shift());
        sum *= sum % 2 === 1 ? 0.75 : 1;
        profit += sum;
        drink = input.shift();
    }

    console.log(neededSum <= profit ? "Target acquired." :
        `We need ${(neededSum - profit).toFixed(2)} leva more.`);
    console.log(`Club income - ${profit.toFixed(2)} leva.`);
}