Buggy python submission (verdict: Time Limit Exceeded):
from itertools import permutations

def floyd_warshall():
            for k in range(N):
                for i in range(N):
                    for j in range(N):
                        dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j])

            
N, M, R = list(map(int, input().split()))
r = (int(i)-1 for i in input().split())
res = float('inf')
dist = [[float("inf")] * N for i in range(N)]
for i in range(N):
        dist[i][i] = 0
for i in range(M):
    a, b, c = list(map(int, input().split()))
    a -= 1
    b -= 1
    dist[a][b] = dist[b][a] = c

floyd_warshall()
for p in permutations(r):
        s = 0
        for i in range(R - 1):
            s += dist[p[i]][p[i + 1]]
        if s < res:
            res = s
print(res)

Fixed submission:
import sys
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))

 
def main():
    def floyd_warshall():
        for k in range(n):
            for i in range(n):
                for j in range(n):
                    dd = d[i][k] + d[k][j]
                    if dd < d[i][j]:
                        d[i][j] = dd
 
    n, m, r = read_int_list()
    v = read_int_list()
    v = [x - 1 for x in v]
    d = [[float('inf')] * n for i in range(n)]
    for i in range(n):
        d[i][i] = 0
    for i in range(m):
        a, b, c = read_int_list()
        a -= 1
        b -= 1
        d[a][b] = c
        d[b][a] = c
    floyd_warshall()
    res = float('inf')
    for p in permutations(v):
        s = 0
        for i in range(r - 1):
            s += d[p[i]][p[i + 1]]
        if s < res:
            res = s
    print(res)
 
 
main()

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import permutations

def floyd_warshall():
            for k in range(N):
                for i in range(N):
                    for j in range(N):
                        dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j])

            
N, M, R = list(map(int, input().split()))
r = (int(i)-1 for i in input().split())
res = float('inf')
dist = [[float("inf")] * N for i in range(N)]

for i in range(M):
    a, b, c = list(map(int, input().split()))
    a -= 1
    b -= 1
    dist[a][b] = dist[b][a] = c

floyd_warshall()
for p in permutations(r):
        s = 0
        for i in range(R - 1):
            s += dist[p[i]][p[i + 1]]
        if s < res:
            res = s
print(res)

Fixed submission:
import sys
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))

 
def main():
    def floyd_warshall():
        for k in range(n):
            for i in range(n):
                for j in range(n):
                    dd = d[i][k] + d[k][j]
                    if dd < d[i][j]:
                        d[i][j] = dd
 
    n, m, r = read_int_list()
    v = read_int_list()
    v = [x - 1 for x in v]
    d = [[float('inf')] * n for i in range(n)]
    for i in range(n):
        d[i][i] = 0
    for i in range(m):
        a, b, c = read_int_list()
        a -= 1
        b -= 1
        d[a][b] = c
        d[b][a] = c
    floyd_warshall()
    res = float('inf')
    for p in permutations(v):
        s = 0
        for i in range(r - 1):
            s += d[p[i]][p[i + 1]]
        if s < res:
            res = s
    print(res)
 
 
main()

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import permutations

def main():
    def floyd_warshall():
                for k in range(N):
                    for i in range(N):
                        for j in range(N):
                            dist[i][j] = min(dist[i][j], dist[i][k] + dist[k][j])
    
                
    N, M, R = (int(i) for i in input().split())
    r = (int(i)-1 for i in input().split())
    res = float('inf')
    dist = [[float("inf")] * N for i in range(N)]
    
    for i in range(M):
        a, b, c = (int(i) for i in input().split())
        a -= 1
        b -= 1
        dist[a][b] = dist[b][a] = c
    
    floyd_warshall()
    for p in permutations(r):
            s = 0
            for i in range(R - 1):
                s += dist[p[i]][p[i + 1]]
            if s < res:
                res = s
    print(res)
main()
    

Fixed submission:
import sys
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))

 
def main():
    def floyd_warshall():
        for k in range(n):
            for i in range(n):
                for j in range(n):
                    dd = d[i][k] + d[k][j]
                    if dd < d[i][j]:
                        d[i][j] = dd
 
    n, m, r = read_int_list()
    v = read_int_list()
    v = [x - 1 for x in v]
    d = [[float('inf')] * n for i in range(n)]
    for i in range(n):
        d[i][i] = 0
    for i in range(m):
        a, b, c = read_int_list()
        a -= 1
        b -= 1
        d[a][b] = c
        d[b][a] = c
    floyd_warshall()
    res = float('inf')
    for p in permutations(v):
        s = 0
        for i in range(r - 1):
            s += d[p[i]][p[i + 1]]
        if s < res:
            res = s
    print(res)
 
 
main()

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import permutations

def floyd_warshall():
            for k in range(N):
                for i in range(N):
                    for j in range(N):
                        dist[i][j] = min(dist[i][j],  dist[i][k] + dist[k][j])
                        
            
def permutation():
    global res
    for p in permutations(r):
        s = 0
        for i in range(R - 1):
            s += dist[p[i]][p[i + 1]]
        if s < res:
            res = s
            
N, M, R = (int(i) for i in input().split())
r = (int(i)-1 for i in input().split())
used = [bool]*9
res = float('inf')
dist = [[float("inf")] * N for i in range(N)]
for i in range(M):
    a, b, c = (int(i) for i in input().split())
    a -= 1
    b -= 1
    dist[a][b] = c
    dist[b][a] = c

floyd_warshall()
permutation()
print(res)
    

Fixed submission:
import sys
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))

 
def main():
    def floyd_warshall():
        for k in range(n):
            for i in range(n):
                for j in range(n):
                    dd = d[i][k] + d[k][j]
                    if dd < d[i][j]:
                        d[i][j] = dd
 
    n, m, r = read_int_list()
    v = read_int_list()
    v = [x - 1 for x in v]
    d = [[float('inf')] * n for i in range(n)]
    for i in range(n):
        d[i][i] = 0
    for i in range(m):
        a, b, c = read_int_list()
        a -= 1
        b -= 1
        d[a][b] = c
        d[b][a] = c
    floyd_warshall()
    res = float('inf')
    for p in permutations(v):
        s = 0
        for i in range(r - 1):
            s += d[p[i]][p[i + 1]]
        if s < res:
            res = s
    print(res)
 
 
main()

Buggy python submission (verdict: Time Limit Exceeded):
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))
    

def floyd_warshall():
            for k in range(N):
                for i in range(N):
                    for j in range(N):
                        dist[i][j] = min(dist[i][j],  dist[i][k] + dist[k][j])
                        
# def dfs(c, las, d):
#     global res
#     if c == R+1:
#         if res > d:
#             res = d
#         return
    
#     for i in range(1,R):
#         if used[i] != False:
#             used[i] = True
#             if las == -1:
#                 dfs(c+1,i,0)
#             else:
#                 dfs(c+1, i, d+dist[r[las]][r[i]])
#             used[i] = False
            
def permutation():
    global res
    for p in permutations(r):
        s = 0
        for i in range(R - 1):
            s += dist[p[i]][p[i + 1]]
        if s < res:
            res = s
            
N, M, R = (int(i) for i in input().split())
r = read_int_list()
r = [x - 1 for x in r]
used = [bool]*9
res = float('inf')
dist = [[float("inf") for i in range(201)] for i in range((201))]
for i in range(M):
    a, b, c = (int(i) for i in input().split())
    a -= 1
    b -= 1
    dist[a][b] = c
    dist[b][a] = c

floyd_warshall()
# dfs(1,-1,0)
permutation()
print(res)
    

Fixed submission:
import sys
from itertools import permutations

def read_int_list():
    return list(map(int, input().split()))

 
def main():
    def floyd_warshall():
        for k in range(n):
            for i in range(n):
                for j in range(n):
                    dd = d[i][k] + d[k][j]
                    if dd < d[i][j]:
                        d[i][j] = dd
 
    n, m, r = read_int_list()
    v = read_int_list()
    v = [x - 1 for x in v]
    d = [[float('inf')] * n for i in range(n)]
    for i in range(n):
        d[i][i] = 0
    for i in range(m):
        a, b, c = read_int_list()
        a -= 1
        b -= 1
        d[a][b] = c
        d[b][a] = c
    floyd_warshall()
    res = float('inf')
    for p in permutations(v):
        s = 0
        for i in range(r - 1):
            s += d[p[i]][p[i + 1]]
        if s < res:
            res = s
    print(res)
 
 
main()