Created
May 22, 2018 02:17
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# EDGE CASES THAT FAILED during contest N=1;K=1;K=2;K=3 FIXED! | |
t=int(input()) | |
while(t!=0): | |
t-=1 | |
n,k=[int(x) for x in input().split()] | |
count=n | |
num1=k | |
ones='1'* len(bin(k)[2:]) #all ones a^b=c a^c=b trying | |
ones_int= int(ones,2) | |
num2=num1^ones_int #compliment | |
#if num2==0 | |
ones='1'* len(bin(k-1)[2:]) | |
ones_int= int(ones,2) | |
num2_alt=(num1-1)^ones_int | |
if(n==1): | |
print(k) | |
elif(n==2): | |
if(num2==0): | |
print(num1-1,num2_alt) | |
else: | |
print(num1,num2) | |
elif(k==1): | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
elif(k==2): | |
print(2,end=' ') | |
count-=1 | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
elif(k==3): | |
if(n%2==0): | |
print(2,end=' ') | |
else: | |
print(3,end=' ') | |
count-=1 | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
elif(n%2==0): | |
if(num2==0): | |
print(num1-1,num2_alt,end=' ' ) | |
else: | |
print(num1,num2,end=' ') | |
count-=2 | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
elif(n%2!=0): | |
if(num2==0): | |
print(num1,end=' ') | |
count-=1 | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
else: | |
if(num2==1): | |
print(num1-1,num2_alt^1,1,end=' ') | |
else: | |
print(num1,(num2^1),1,end=' ') | |
count-=3 | |
while(count!=0): | |
count-=1 | |
print(1,end=' ') | |
print('') | |
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