Sang-cheol gave Byeong-ji 2 battle cards, and the difference between Sang-cheol and Byeong-ji was 6. Find the difference between the two before Sang-cheol gave Byeong-ji battle cards. However, the number of battle cards Byeong-ji has is more than the number Sang-cheol has.
6 2 [OP_SUB] 2 [OP_SUB]
var_a = 6
var_b = 2
var_c = var_a - var_b
var_d = 2
var_e = var_c - var_d
print(int(var_e))