When you gave Yuna 30 of the 210 pieces of colored paper that Yoojung had, the number of colored paper that Yoojung had was 50 more than Yuna. How many pieces of colored paper did Yuna have at first?
210 30 [OP_SUB] 50 [OP_SUB] 30 [OP_SUB]
var_a = 210
var_b = 30
var_c = var_a - var_b
var_d = 50
var_e = var_c - var_d
var_f = 30
var_g = var_e - var_f
print(int(var_g))