def METHOD_NAME(self,x,F,flag):
    try:
        F[0] = x[0]*x[0] + x[1]*x[1] - 1
        F[1] = x[1]      - x[0]*x[0]
    except Exception as e:
        print("Exception in MyProblem.computeF method")
        print(e)
        return False
    return True