Pension Eligibility Counter

You are given data on a number of employees. For each employee, you are provided with three integers representing:

• Age
• Number of medical leave days taken in the previous year
• Years of service

An employee is eligible for the pension scheme if and only if all the following conditions hold:

• \( \text{age} \geq 60 \)
• \( \text{medical leave days} < 15 \)
• \( \text{years of service} \geq 30 \)

Your task is to determine the number of employees eligible for the pension scheme.

inputFormat

The input is given from standard input (stdin) and has the following format:

<N>
<age_1> <medical_leave_1> <years_of_service_1>
<age_2> <medical_leave_2> <years_of_service_2>
... 
<age_N> <medical_leave_N> <years_of_service_N>

Where N (an integer) represents the number of employees, and for each employee the three integers are separated by spaces.

outputFormat

Output a single integer to standard output (stdout) representing the count of employees eligible for the pension scheme.

## sample

5
62 12 31
58 10 35
70 14 29
65 20 32
60 5 40

3

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