n,m = map(int,input().split())
d = [[0]*n for _ in range(n)]
for _ in range(m):
    x,y,c = map(int,input().split())
    d[x][y] += c

r = list(range(n))
s = 0
for i in range(n):
    for j in range(i+1,n):
        s += d[r[i]][r[j]]
v = s
ans = r[:]

from random import randrange
for _ in range(10000000):
    i = randrange(n-1)
    s += d[r[i+1]][r[i]] - d[r[i]][r[i+1]]
    r[i],r[i+1] = r[i+1],r[i]                
    if v < s:
        v = s
        ans = r[:]

print(v)
print(*ans)