from typing import List


def create_source_unexp_edges(unexp_ids:List[int])->List[tuple]:
    """Create edges between source node and unexposed patients 
    with capacity 1 and no weight (fully connected)"""
    edge_list = [('source', unexp_id, {'capacity':1, 'weight':0})\
         for unexp_id in unexp_ids]
    return edge_list