solve issue "debug3.cpp"

[Mastermind-sap]

You have tested the function with different inputs, but you found that it sometimes returns incorrect results. For example, when you enter {1, 2, 3, 4, 5}, the function returns 4 as expected, but when you enter {5, 5, 5, 5}, the function returns -2147483648 instead of 5.

solve the following issue .

NOTE : you can not change the logic of all code .
Try to fix with minimum changes.