description: The grasshopper is located on the numeric axis at the point with coordinate x_0.
  
  Having nothing else to do he starts jumping between integer points on the axis. Making a jump from a point with coordinate x with a distance d to the left moves the grasshopper to a point with a coordinate x - d, while jumping to the right moves him to a point with a coordinate x + d.
  
  The grasshopper is very fond of positive integers, so for each integer i starting with 1 the following holds: exactly i minutes after the start he makes a jump with a distance of exactly i. So, in the first minutes he jumps by 1, then by 2, and so on.
  
  The direction of a jump is determined as follows: if the point where the grasshopper was before the jump has an even coordinate, the grasshopper jumps to the left, otherwise he jumps to the right.
  
  For example, if after 18 consecutive jumps he arrives at the point with a coordinate 7, he will jump by a distance of 19 to the right, since 7 is an odd number, and will end up at a point 7 + 19 = 26. Since 26 is an even number, the next jump the grasshopper will make to the left by a distance of 20, and it will move him to the point 26 - 20 = 6.
  
  Find exactly which point the grasshopper will be at after exactly n jumps.
  
  Input
  
  The first line of input contains an integer t (1 ≤ t ≤ 10^4) — the number of test cases.
  
  Each of the following t lines contains two integers x_0 (-10^{14} ≤ x_0 ≤ 10^{14}) and n (0 ≤ n ≤ 10^{14}) — the coordinate of the grasshopper's initial position and the number of jumps.
  
  Output
  
  Print exactly t lines. On the i-th line print one integer — the answer to the i-th test case — the coordinate of the point the grasshopper will be at after making n jumps from the point x_0.
  
  Example
  
  Input
  
  
  9
  0 1
  0 2
  10 10
  10 99
  177 13
  10000000000 987654321
  -433494437 87178291199
  1 0
  -1 1
  
  
  Output
  
  
  -1
  1
  11
  110
  190
  9012345679
  -87611785637
  1
  0
  
  Note
  
  The first two test cases in the example correspond to the first two jumps from the point x_0 = 0. 
  
  Since 0 is an even number, the first jump of length 1 is made to the left, and the grasshopper ends up at the point 0 - 1 = -1.
  
  Then, since -1 is an odd number, a jump of length 2 is made to the right, bringing the grasshopper to the point with coordinate -1 + 2 = 1.
solution: from __future__ import division, print_function
  
  import os,sys
  from io import BytesIO, IOBase
  
  if sys.version_info[0] < 3:
      from __builtin__ import xrange as range
      from future_builtins import ascii, filter, hex, map, oct, zip
  
  from bisect import bisect_left as lower_bound, bisect_right as upper_bound 
  def so():  return int(input())
  def st():  return input()
  def mj():  return map(int,input().strip().split(" "))
  def msj(): return map(str,input().strip().split(" "))
  def le():  return list(map(int,input().split()))
  def lebe():return list(map(int, input()))
  
  def dmain():
      sys.setrecursionlimit(1000000)
      threading.stack_size(1024000)
      thread = threading.Thread(target=main)
      thread.start()
  def joro(L):
      return(''.join(map(str, L)))
  
  
  def decimalToBinary(n): return bin(n).replace("0b","")
  
  
  def isprime(n):
      for i in range(2,int(n**0.5)+1):
          if n%i==0:
              return False
      return True
  def npr(n, r):
      return factorial(n) // factorial(n - r) if n >= r else 0
   
   
  def ncr(n, r):
      return factorial(n) // (factorial(r) * factorial(n - r)) if n >= r else 0
   
   
  def lower_bound(li, num):
      answer = -1
      start = 0
      end = len(li) - 1
   
      while (start <= end):
          middle = (end + start) // 2
          if li[middle] >= num:
              answer = middle
              end = middle - 1
          else:
              start = middle + 1
      return answer  # min index where x is not less than num
   
   
  def upper_bound(li, num):
      answer = -1
      start = 0
      end = len(li) - 1
   
      while (start <= end):
          middle = (end + start) // 2
   
          if li[middle] <= num:
              answer = middle
              start = middle + 1
   
          else:
              end = middle - 1
      return answer  # max index where x is not greater than num
  def tir(a,b,c):
      if(0==c):
          return 1
      if(len(a)<=b):
          return 0
      
      if(c!=-1):
          return (tir(a,1+b,c+a[b]) or tir(a,b+1,c-a[b]) or tir(a,1+b,c)) 
          
          
      else:
          return (tir(a,1+b,a[b]) or tir(a,b+1,-a[b]) or tir(a,1+b,-1))
          
   
  def abs(x):
      return x if x >= 0 else -x
   
   
  def binary_search(li, val, lb, ub):
      # print(lb, ub, li)
      ans = -1
      while (lb <= ub):
          mid = (lb + ub) // 2
          # print('mid is',mid, li[mid])
          if li[mid] > val:
              ub = mid - 1
          elif val > li[mid]:
              lb = mid + 1
          else:
              ans = mid  # return index
              break
      return ans
   
   
  def kadane(x):  # maximum sum contiguous subarray
      sum_so_far = 0
      current_sum = 0
      for i in x:
          current_sum += i
          if current_sum < 0:
              current_sum = 0
          else:
              sum_so_far = max(sum_so_far, current_sum)
      return sum_so_far
   
   
  def pref(li):
      pref_sum = [0]
      for i in li:
          pref_sum.append(pref_sum[-1] + i)
      return pref_sum
   
   
  def SieveOfEratosthenes(n):
      prime = [True for i in range(n + 1)]
      p = 2
      li = []
      while (p * p <= n):
          if (prime[p] == True):
              for i in range(p * p, n + 1, p):
                  prime[i] = False
          p += 1
   
      for p in range(2, len(prime)):
          if prime[p]:
              li.append(p)
      return li
   
   
  def primefactors(n):
      from math import sqrt
      factors = []
      while (n % 2 == 0):
          factors.append(2)
          n //= 2
      for i in range(3, int(sqrt(n)) + 1, 2):  # only odd factors left
          while n % i == 0:
              factors.append(i)
              n //= i
      if n > 2:  # incase of prime
          factors.append(n)
      return factors
           
      
  def read():
      sys.stdin  = open('input.txt', 'r')  
      sys.stdout = open('output.txt', 'w') 
  def tr(n):
      return n*(n+1)//2
  def ti(x):
      import math
      if(x>=0):
          s=(math.sqrt(x))
      if(s*s==x):
          return 1
      return 0
  doi=int(1e9+7)
  boi=int(1e9-7)
  def ryu(a,b):
      re=1
      while(b!=0):
          if(b%2!=0):
              re*=a
              re%=boi
          b=b//2
          a*=a
          a%=boi
      return re
  fa=[0]*(100007)
  
  def mi(n,p):
      return pow(n,p-2,p)
  def ncr(n,r,p):
      if(n<r):
          return 0
      if(r==0):
          return 1
      return(fa[n]*mi(fa[r],p)%p *mi(fa[n-r],p)%p)%p
  
  
  def iu():
      import re
      import sys
      input =sys.stdin.readline
      import math as my
      a,b=mj()
      L=[]
      c=a
      for i in range(4):
          m=i+1
          if(c%2==1):
              c+=m
          else:
              c-=m
          L.append(c)
      t=b%4
      if(t==0 or t==2):
          if(0==t):
              t+=4
          print(L[t-1])
      else:
          if(t==1):
              b-=1
              fr=b//4.0
              if(a%2==1):
                  print(int(L[t-1]+4*fr))
              else:
                  print(int(L[t-1]-4*fr))
          else:
              b-=1
              fr=b//4.0
              if(a%2==1):
                  print(int(L[t-1]-4*fr))
              else:
                  print(int(L[t-1]+4*fr))
                  
                      
  
          
              
      
      
      
          
      
          
  def main():
      for i in range(so()):
          iu()
                  
  
      
              
      
  
          
      
  
              
                  
                  
                  
                  
              
      
              
              
      
      
      
      
          
              
      
              
              
              
          
      
          
      
      
          
          
          
  
              
                      
                  
                      
                      
                      
                      
                      
                      
          
                  
          
          
         
      
             
            
            
                  
              
          
                  
      
          
          
          
         
              
                  
          
  
  
  
  
  # region fastio
  # template taken from https://github.com/cheran-senthil/PyRival/blob/master/templates/template.py
  
  BUFSIZE = 8192
  
  
  class FastIO(IOBase):
      newlines = 0
  
      def __init__(self, file):
          self._fd = file.fileno()
          self.buffer = BytesIO()
          self.writable = "x" in file.mode or "r" not in file.mode
          self.write = self.buffer.write if self.writable else None
  
      def read(self):
          while True:
              b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
              if not b:
                  break
              ptr = self.buffer.tell()
              self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
          self.newlines = 0
          return self.buffer.read()
  
      def readline(self):
          while self.newlines == 0:
              b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
              self.newlines = b.count(b"\n") + (not b)
              ptr = self.buffer.tell()
              self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
          self.newlines -= 1
          return self.buffer.readline()
  
      def flush(self):
          if self.writable:
              os.write(self._fd, self.buffer.getvalue())
              self.buffer.truncate(0), self.buffer.seek(0)
  
  
  class IOWrapper(IOBase):
      def __init__(self, file):
          self.buffer = FastIO(file)
          self.flush = self.buffer.flush
          self.writable = self.buffer.writable
          self.write = lambda s: self.buffer.write(s.encode("ascii"))
          self.read = lambda: self.buffer.read().decode("ascii")
          self.readline = lambda: self.buffer.readline().decode("ascii")
  
  
  def print(*args, **kwargs):
      """Prints the values to a stream, or to sys.stdout by default."""
      sep, file = kwargs.pop("sep", " "), kwargs.pop("file", sys.stdout)
      at_start = True
      for x in args:
          if not at_start:
              file.write(sep)
          file.write(str(x))
          at_start = False
      file.write(kwargs.pop("end", "\n"))
      if kwargs.pop("flush", False):
          file.flush()
  
  
  if sys.version_info[0] < 3:
      sys.stdin, sys.stdout = FastIO(sys.stdin), FastIO(sys.stdout)
  else:
      sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
  
  input = lambda: sys.stdin.readline().rstrip("\r\n")
  
  # endregion
  
  
  if __name__ == "__main__":
      #read()
      main()
      #dmain()
  
  # Comment Read()