n,m = map(int,input().split())
edge = [[] for i in range(n)]
edge_cost = {}
edge_weight = []
for i in range(m):
    u,v,w = map(int,input().split())
    edge[u-1].append(v-1)
    edge_cost[u-1,v-1] = 1
    edge_weight.append((u-1,v-1,w))

dist = [10**18 for i in range(n)]
ans = [-1 for i in range(n)]
dist[0] = 0

def dfs(s,w):
    que = [s]
    while que:
        v = que.pop()
        for nv in edge[v]:
            if dist[v]!=-10**18:
                if dist[nv] > dist[v] + edge_cost[v,nv]:
                    dist[nv] = dist[v] + edge_cost[v,nv]
                    if dist[nv] < -n:
                        dist[nv] = -10**18
                    if dist[nv]<=0 and ans[nv]==-1:
                        ans[nv] = w
                    que.append(nv)
            else:
                if dist[nv]!=-10**18:
                    dist[nv] = -10**18
                    if ans[nv]==-1:
                        ans[nv] = w
                    que.append(nv)

dfs(0,-1)

edge_weight.sort(key = lambda x:x[2])
for u,v,w in edge_weight:
    edge_cost[u,v] = -1
    if dist[v] > dist[u] + edge_cost[u,v]:
        dist[v] = dist[u] + edge_cost[u,v]
        if dist[v] < -n:
            dist[v] = -10**18
        if dist[v]<=0 and ans[v]==-1:
            ans[v] = w
        dfs(v,w)

print(*ans[1:],sep="\n")