const maxInvestment = 10000;
const offers = [[]];
let stop = false;
let curInvestment = 0;

while (curInvestment <= maxInvestment && !stop) {
    const [curAsk, curBid] = [asks[0], bids[0]];
    const [curNextAsk, curNextBid] = [findOfferFromNextExchange(asks), findOfferFromNextExchange(bids)];
    let testA, testB;
    if (curAsk.exchange !== curBid.exchange || curBid.price - curAsk.price > curNextBid.price - curNextAsk.price) {
        testA = curAsk;
        testB = curBid;
    } else {
        testA = curNextAsk;
        testB = curNextBid;
    }
    if (testA.price > testB.price) stop = true;
    else {
        if (testA.volume > testB.volume) {
            if (testB.volume * testA.price > (maxInvestment - curInvestment)) {
                let lastVolume = (maxInvestment - curInvestment) / testA.price;
                offers.push([...offers[offers.length - 1], {
                    ask: { price: testA.price, volume: lastVolume },
                    bid: { price: testB.price, volume: lastVolume }
                }]);
                stop = true;
                curInvestment += testA.price * lastVolume ;
            } else {
                offers.push([...offers[offers.length - 1], {
                    ask: { price: testA.price, volume: testB.volume },
                    bid: { price: testB.price, volume: testB.volume }
                }]);
                bids = bids.filter(v => v !== testB);
                testA.volume -= testB.volume;
                curInvestment += testA.price * testB.volume;
                console.log('b', offers[offers.length - 1][offers[offers.length - 1].length - 1]);
            }
        } else {
            if (testA.volume * testA.price > (maxInvestment - curInvestment)) {
                let lastVolume = (maxInvestment - curInvestment) / testA.price;
                offers.push([...offers[offers.length - 1], {
                    ask: { price: testA.price, volume: lastVolume },
                    bid: { price: testB.price, volume: lastVolume },
                }]);
                stop = true;
                curInvestment += testA.price * lastVolume ;
            } else {
                offers.push([...offers[offers.length - 1], {
                    ask: { price: testA.price, volume: testA.volume },
                    bid: { price: testB.price, volume: testA.volume }
                }]);
                asks = asks.filter(v => v !== testA);
                testB.volume -= testA.volume;
                curInvestment += testA.price * testA.volume;
                console.log('a', offers[offers.length - 1][offers[offers.length - 1].length - 1]);
            }

        }
    }
}
offers.shift();
// console.log(offers)
console.log(curInvestment);