Yoongi is playing a game of throwing basketballs with his 20 friends. When 11 students had goaled more balls than Yoongi, how many students did not goal balls than Yoongi?
20 11 [OP_SUB] 1 [OP_SUB]
var_a = 20
var_b = 11
var_c = var_a - var_b
var_d = 1
var_e = var_c - var_d
print(int(var_e))