Jam

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Carlson has N jars of jam. They are numbered from 1 to N while ith jar contains Ai units of jam. Carslon believes that ith jar should contain at least Bi units of jam. Unfourtunetly, it happens that Ai is less than Bi. To fix this issue Carlson adds jam by doing M operations. Each operation is defined by four numbers l, r, x and y. It means that Carlson adds x units of jam to the lth, x + y units

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solution.cppC++17

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