function solve(input) {

    let flour = Number(input.shift());
    let flourQ = Number(input.shift());
    let sugar = Number(input.shift());
    let eggPack = Number(input.shift());
    let mayaPack = Number(input.shift());
    let sugarPrice = flour * (1 - 0.25);
    let eggPackPrice = flour * (1 + 0.1);
    let mayaPackPrice = sugarPrice * ( 1- 0.80);
    let total = flour * flourQ + sugar * sugarPrice + eggPack* eggPackPrice + mayaPack*mayaPackPrice;
    console.log(total.toFixed(2));
   }
//solve([50, 10, 3.5, 6, 1]);
solve([63.44, 3.57, 6.35, 8, 2]);