m,n=[int(s) for s in input().split()]
tot=0
for i in range(m,n+1):
if(1%3==0):
tot+=i
print(tot)
m , n =[ int(s) for s in input().split()]
tot =0
for i in range (m ,n+1):
if (i%3==0):
tot += i
print (tot)
有帮助的话记得采纳一下哦!