Problem:
Single Source Shortest Path

For a given weighted graph G(V, E) and a source r, find the source shortest path to each vertex from the source (SSSP: Single Source Shortest Path).

Input

An edge-weighted graph G (V, E) and the source r.

|V| |E| r
s0 t0 d0
s1 t1 d1
:
s|E|-1 t|E|-1 d|E|-1

|V| is the number of vertices and |E| is the number of edges in G. The graph vertices are named with the numbers 0, 1,..., |V|-1 respectively. r is the source of the graph.

si and ti represent source and target vertices of i-th edge (directed) and di represents the cost of the i-th edge.

Output

Print the costs of SSSP in the following format.

c0
c1
:
c|V|-1

The output consists of |V| lines. Print the cost of the shortest path from the source r to each vertex 0, 1, ... |V|-1 in order. If there is no path from the source to a vertex, print INF.

Constraints

1 ≤ |V| ≤ 100000

0 ≤ di ≤ 10000

0 ≤ |E| ≤ 500000

There are no parallel edges

There are no self-loops

Sample Input 1

4 5 0
0 1 1
0 2 4
1 2 2
2 3 1
1 3 5

Sample Output 1

0
1
3
4

Sample Input 2

4 6 1
0 1 1
0 2 4
2 0 1
1 2 2
3 1 1
3 2 5

Sample Output 2

3
0
2
INF

Solution in Python3 (judge verdict: Accepted)

v_num, e_num, r = map(int, input().split())
INF = (10000 + 1) * v_num
dist = [INF] * v_num
G = [[] for _ in range(v_num)]
for _ in range(e_num):
    s, t, d = tuple(map(int, input().split()))
    G[s].append((t, d))

from heapq import heappush, heappop
q = []
heappush(q, (0, r))
dist[r] = 0
while q:
    d, node = heappop(q)
    for to, cost in G[node]:
        if dist[to] > d + cost:
            dist[to] = d + cost
            heappush(q, (d+cost, to))

for d in dist:
    if d == INF:
        print('INF')
    else:
        print(d)