From 887c286cc8228e13f85b587ab92b37e920161eb9 Mon Sep 17 00:00:00 2001 From: Nguyễn Gia Phong Date: Mon, 15 Apr 2019 17:20:41 +0700 Subject: Codechef celebrate 4.20 a bit early this year --- codechef/fence.py | 15 +++++++++++++++ 1 file changed, 15 insertions(+) create mode 100755 codechef/fence.py (limited to 'codechef/fence.py') diff --git a/codechef/fence.py b/codechef/fence.py new file mode 100755 index 0000000..8d1b266 --- /dev/null +++ b/codechef/fence.py @@ -0,0 +1,15 @@ +#!/usr/bin/env python3 +ADJ = (1, 0), (0, 1), (-1, 0), (0, -1) + +for i in range(int(input())): + fences = set() + n, m, k = map(int, input().split()) + for j in range(k): + row, col = map(int, input().split()) + for dr, dc in ADJ: + r, c = row + dr, col + dc + try: + fences.remove((r, c, row, col)) + except KeyError: + fences.add((row, col, r, c)) + print(len(fences)) -- cgit 1.4.1