Algorithm-math.md
μ§μμ μ§λ²
def stoi(s, n):
ret = 0
l = len(s)
for i in range(l): ret += int(s[i]) * n**(l-i-1)
return retdef pow_custom(a, b):
ret = 1
while b:
if b % 2 == 1: ret *= a
a = a*a
b //= 2
return retμ΅λ곡μ½μμ μ΅μ곡배μ
μμμ μμΈμλΆν΄
μλΌν μ€ν
λ€μ€μ 체
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