A-Masala

a,b=map(int,input().split())
if a%6==0:
 bir=a
else:
 bir=(a//6+1)*6
if a%24==0:
 bir1=a
else:
 bir1=(a//24+1)*24
nechta3=(b//6)-(a-1)//6
nechta7=b//24-(a-1)//24
arifmetik3=6*((bir//6+bir//6+nechta3-1)*nechta3//2)
arifmetik7=24*((bir1//24+bir1//24+nechta7-1)*nechta7//2)
print(arifmetik3-arifmetik7)

Shamsiddin Qutlimuratov
@shams_0608


A-Masala

a,b=map(int,input().split())
k=(a-1)//6
k1=(a-1)//24
l1=b//24
l=b//6
o=l*(l+1)//2-k*(k+1)//2
p=l1*(l1+1)//2-k1*(k1+1)//2
print(o*6-p*24)

New Coder
@crazycpp