ATM queue

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Ramu and his wife Lata are facing a cash crisis. They go to the nearby ATM to get some cash. There are **3** ATMs inside the same room. People are standing in queue outside, and go inside the room in groups of 3 to the ATMs, fetch their money and come out. Lata has an irrational fear in getting money from ATM that her ATM pin will somehow be stolen and all her money will be lost. So, she will alwa

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solution.cppC++17

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