import heapq

def read_data():
    N, M = map(int, input().split())
    Es = [[] for v in range(N)]
    EEs = [[] for v in range(N)]
    for m in range(M):
        A, B, C = map(int, input().split())
        Es[A].append((B, C))
        EEs[B].append((A, C))
    return N, M, Es, EEs


def solve(N, M, Es, EEs):
    T1s = getTs(N, M, Es, 0)
    T2s = getTs(N, M, EEs, N - 1)
    T = T1s[N - 1]
    T2s = [T - t for t in T2s]
    P = sum(1 for t1, t2 in zip(T1s, T2s) if t1 < t2)
    return '{} {}/{}'.format(T, P, N)


def getTs(N, M, Es, start):
    # n_ins[p]: p に入る辺の本数。
    n_ins = [0] * N
    for pairs in Es:
        for d, c in pairs:
            n_ins[d] += 1
    n_ins[start] = 1

    # Ts: 最早結合点時刻
    Ts = [-1] * N
    pq = [(0, start)]
    while pq:
        t, p = heapq.heappop(pq)
        n_ins[p] -= 1
        if n_ins[p]:
            continue
        Ts[p] = t
        for v, c in Es[p]:
            heapq.heappush(pq, (t + c, v))
    return Ts
    

N, M, Es, EEs = read_data()
print(solve(N, M, Es, EEs))