https://www.geeksforgeeks.org/left-shift-right-shift-operators-c-cpp/ https://www.geeksforgeeks.org/left-shift-right-shift-operato... "The left shift and right

https://www.geeksforgeeks.org/left-shift-right-shift-operators-c-cpp/ https://www.geeksforgeeks.org/left-shift-right-shift-operato... "The left shift and right shift operators should not be used for negative numbers. The result of is undefined behaviour if any of the operands is a negative number." Might be one reason?