Oliver

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A shopkeeper in Starling City, sells ARROWS. He has decided to sell them for $₹1$ for the first day,$₹2$ for next $2$ days, $₹3$ for next $3$ days $.....$ $₹N$ for next $N$ days. He sells only $1$ arrow on a single day. OLIVER, being the VIGILANTE buys all the available ARROWS on any day. Diggle is wondering the amount OLIVER needs to pay to the Shopkeeper after $N$ days. Since Diggle is bu

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solution.cppC++17

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