import sys

def calculate_min_blows(n, x, blows):
    """
    Calculate the minimum number of blows to defeat Zmei Gorynich.
    :param n: Number of types of blows.
    :param x: Initial number of heads.
    :param blows: List of tuples (d_i, h_i) for each blow type.
    :return: Minimum number of blows or -1 if impossible.
    """
    # Implementation will be added here
    pass

def main():
    # Parse command-line arguments
    args = sys.argv[1].split()
    t = int(args[0])
    queries = []
    idx = 1
    for _ in range(t):
        n, x = map(int, args[idx:idx+2])
        idx += 2
        blows = [tuple(map(int, args[idx:idx+2])) for _ in range(n)]
        idx += 2*n
        queries.append((n, x, blows))

    # Process each query
    for n, x, blows in queries:
        result = calculate_min_blows(n, x, blows)
        print(result)

if __name__ == "__main__":
    main()"""

print(code)
