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
    
from random import shuffle
r = list(range(n))
v = 0
for _ in range(1000):
    shuffle(r)
    while True:
        for i in range(n-1):
            if d[r[i]][r[i+1]] < d[r[i+1]][r[i]]:
                r[i],r[i+1] = r[i+1],r[i]                
                break
        else:
            break
    
    s = 0
    for i in range(n):
        for j in range(i+1,n):
            s += d[r[i]][r[j]]
    if v < s:
        v = s
        ans = r[:]

print(v)
print(*ans)