a=2b
c = d-51, d = c+51
c = b-17, b= c+17
d=e:3, e = 3d
a+b+c+d+e = 2015
c |__|
b |__|_17|
a |__|_17|__|_17|
d |__|__51_|
e |__|__51_|__|__51_|__|__51_|
17x3+51x4=51+204=255
2015-255=1760
1760:8=220 = c
b=c+17=220+17=237
a=237x2=474
d = c+51=220+51=271
e=3d=271x3=813