modulo addition operations


i have written the whole and it’s working also
the only problem is that it is asking to output answer in modulo 10^9+7
so how to do addition of large numbers and get the output as required
here is my code …please tell me how to answer it in modulo 10^9+7

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contest is live, so please don’t post your code.

Sorry, i didnt notice its from a live contest. Deleted my answer.

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