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11645번: I’ve Been Everywhere, Man ↗

Solutions

Python 3
675 B | 675 chars
import sys
from math import sqrt, pi, sin, factorial, ceil, floor
from datetime import datetime, timedelta
# sys.setrecursionlimit(10**7)
from functools import reduce

BLANK = " "

# inp = input
inp = lambda : sys.stdin.readline().rstrip()
mii = lambda x = BLANK : [*map(int,inp().split(x))]
mfi = lambda x = BLANK : [*map(float,inp().split(x))]
ii = lambda : int(inp())
fi = lambda : float(inp())
p = print
def gcd(a, b): return gcd(b, a % b) if b > 0 else a
def lcm(a, b): return a * b // gcd(a, b)


def solve():
    n = ii()
    l = [inp() for _ in range(n)]
    p(len(set(l)))

if __name__ == "__main__":
    tc = ii()
    for t in range(1, tc+1):
        ret = solve()