Best Stock Best Stock
Elementary
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You are given the current stock prices. You have to find out which stocks cost more.

The dictionary where the market identifier code is a key and the value is a stock price.

A string and the market identifier code.

best_stock({
    'CAC': 10.0,
    'ATX': 390.2,
    'WIG': 1.2
}) == 'ATX'
best_stock({
    'CAC': 91.1,
    'ATX': 1.01,
    'TASI': 120.9
}) == 'TASI'

All the prices are unique.

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