Chef and his Ex Girlfriends

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Chef has been into many relationships,loves breaking up and blocking his ex-girlfriend's number.He had a breakup recently with Chefina and was trying to forget her phone number but wasn’t able to.His friend Dr.Krishna,a neuroscience professor suggested chef to try a simple trick.The trick was to take parts of the number which have the same digits consecutively and delete them in one go. Formally,

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solution.cppC++17

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