[Python] 백준 1547번 공

1547번 (공)

EZ~


<정답>

import sys
m = int(sys.stdin.readline())
ball = 1
for i in range(m):
    x, y = map(int, sys.stdin.readline().split())
    if (x == ball):
        ball = y
    elif(y == ball):
        ball = x
print(ball)