#!/usr/bin/python3
import sys
import re

count = 0

def is_number(test):
    pattern = re.compile(r'[0-9] [0-9]+ [a-z](\s\d+.\d+){0,1}')
    
    result = re.match(pattern, test[:-1])
    if result:
        count += 1

for line in sys.stdin:
    is_number(line)
	
print(count)