#!/usr/bin/env python3

lines = (x.strip() for x in open("input.txt"))
points = set()
# 1311,895

for line in lines:
    if line.startswith("fold along x="):
        mark = int(line[13:])
        points = set((x if mark > x else 2*mark-x, y) for x, y in points if mark != x)
        break
    elif line.startswith("fold along y="):
        mark = int(line[13:])
        points = set((x, y if mark > y else 2*mark-y) for x, y in points if mark != y)
        break
    elif len(line) > 0:
        points.add(tuple(int(num) for num in line.split(",")))

print(len(points))