def is_safe_report(report):
    """
    Check if a report is safe according to the rules:
    - All numbers are either increasing or decreasing.
    - The difference between adjacent numbers is between 1 and 3.
    """
    differences = []
    for i in range(len(report) - 1):
        diff = report[i+1] - report[i]
        if abs(diff) < 1 or abs(diff) > 3:
            return False  # Adjacent difference not in range [1, 3]
        differences.append(diff)
 
    # Check if all differences are positive (increasing) or negative (decreasing)
    if all(d > 0 for d in differences) or all(d < 0 for d in differences):
        return True
    return False
 
 
def count_safe_reports(input_data):
    """
    Count the number of safe reports in the input data.
    """
    # Parse the input data
    reports = [
        list(map(int, line.split()))
        for line in input_data.strip().split("\n")
    ]
 
    # Check each report for safety
    safe_count = sum(1 for report in reports if is_safe_report(report))
 
    return safe_count
 
 
# Example Input (replace this with the actual input)
input_data = """
 
"""
 
# Calculate and print the result
result = count_safe_reports(input_data)
print("Number of safe reports:", result)
 

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