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#!/usr/bin/env python3
import json
import sys
def maximum_ones(matrix: list) -> int:
"""
Finds the row with the maximum number of ones in a binary matrix.
Args:
matrix (list): A binary matrix represented as a list of lists.
Returns:
int: The 1-based index of the row with the maximum number of ones.
"""
rows = len(matrix)
cols = len(matrix[0])
# The row that has the maximum values
max_row = 0
# The number of ones in that row
max_count = 0
for row in range(rows):
# Check this has the same number of columns as the first row
if len(matrix[row]) != cols:
raise ValueError("Row %s has the wrong number of columns", row)
if sum(matrix[row]) > max_count:
max_row = row
max_count = sum(matrix[row])
# Return the rows as a 1-based index value
return max_row + 1
def main():
matrix = json.loads(sys.argv[1])
result = maximum_ones(matrix)
print(result)
if __name__ == '__main__':
main()
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