# BOJ - 5972 - 택배 배송

Updated:

```
import sys
from heapq import heappush, heappop
def Dijkstra(start, graph, N):
heap = []
distance = [1e9] * (N +1)
distance[start] = 0
heappush(heap, (0, start))
ret = [0 for _ in range(N+1)]
while heap:
weight, location = heappop(heap)
if distance[location] < weight:
continue
for l, w in graph[location]:
w += weight
if w < distance[l]:
distance[l] = w
heappush(heap, (w, l))
print(distance[N])
def solution():
N, M = map(int, sys.stdin.readline().split())
graph = [[] for _ in range(N + 1)]
for _ in range(M):
u, v, w = map(int, sys.stdin.readline().split())
graph[u].append([v, w])
graph[v].append([u, w])
Dijkstra(1, graph, N)
solution()
```

https://www.acmicpc.net/problem/5972

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