#!/usr/bin/env python3
import sys

count = 0
for l in sys.stdin:
    seen = False
    for sig in l.strip().split(" "):
        if sig == "|":
            seen = True
        elif not seen:
            continue
        if len(sig) == 2 or len(sig) == 7 or len(sig) == 4 or len(sig) == 3:
            count += 1

print(count)