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Problems > Forgetful Addition

Forgetful Addition

Difficulty: 1200 2000 ms 128 MB

implementation

Add A and B digit by digit but FORGET every carry (each result digit is (a+b) mod 10). Print the result without leading zeros.

Input: one line with two integers A and B.

Output: the carry-less sum.

Constraints:

  • 0 ≤ A, B ≤ 1018

Sample Tests

Input 1
175 266
Output 1
331
Input 2
99 1
Output 2
90

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