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from collections import defaultdict | |
import heapq | |
def findCheapestPrice(self, n: int, flights: List[List[int]], src: int, dst: int, K: int) -> int: | |
flight_map = defaultdict(list) | |
for start, end, price in flights: | |
flight_map[start].append([end,price]) | |
heap = [(0, -1, src)] #price, stops, city | |
# We use the first argument to be the price, since the heapq library in python will heapify the data using the first argument by default. |
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