from collections import Counter, deque, defaultdict
from heapq import heapify, heappop, heappush, nlargest, nsmallest
from bisect import bisect_left, bisect, bisect_right
from copy import deepcopy
from time import perf_counter
import sys
from typing import Any, List, Callable


def debug(*args, sep=" ", end="\n") -> None:
    print(*args, sep=sep, end=end, file=sys.stderr)


def main():
    global inf, MOD
    input = sys.stdin.read().split()
    ptr = 0
    inf = float("inf")
    MOD = 998244353

    N = int(input[ptr]); ptr += 1
    P, Q, R = map(int, input[ptr:ptr + 3]); ptr += 3
    A, B, C = map(int, input[ptr:ptr + 3]); ptr += 3
    AA = A * pow(Q * R, -1, mod=P); AA %= P
    BB = B * pow(R * P, -1, mod=Q); BB %= Q
    CC = C * pow(P * Q, -1, mod=R); CC %= R
    S = CC * P * Q + AA * Q * R + BB * R * P; S %= P * Q * R
    ans = (N - S) // (P * Q * R) + 1
    print(ans)
    debug(S, AA, BB, CC)


if __name__ == "__main__":
    main()