Mind palace

02-17

371. Sum of Two Integers

01-20

166. Fraction to Recurring Decimal

01-18

367. Valid Perfect Square

01-18

69. Sqrt(x)

01-11

1344. Angle Between Hands of a Clock

12-30

858. Mirror Reflection

12-22

204. Count Primes

12-13

319. Bulb Switcher

06-15

50. Pow(x, n)