Soccer teams in the K-League play one game against all other teams in the league in a year. If there are 91 matches in a year, how many soccer teams are there in the K-League?
91 2 [OP_MUL] 1/2 [OP_POW] 1 [OP_CEIL]
var_a = 91
var_b = 2
var_c = var_a * var_b
var_d = 0.5
var_e = var_c ** var_d
var_f = 1
var_g=int(((var_e+9*10**(var_f-2))//(10**(var_f-1)))*10**(var_f-1))

print(int(var_g))