def main():
    P, N = map(int, input().split())

    class Modint:

        MOD = P

        def __init__(self, value: int) -> None:
            self.num = int(value) % self.MOD

        def __str__(self) -> str:
            return str(self.num)

        __repr__ = __str__

        def __add__(self, __x):
            if isinstance(__x, Modint):
                return Modint((self.num + __x.num))
            return Modint(self.num + __x)

        def __sub__(self, __x):
            if isinstance(__x, Modint):
                return Modint(self.num - __x.num)
            return Modint(self.num - __x)

        def __mul__(self, __x):
            if isinstance(__x, Modint):
                return Modint(self.num * __x.num)
            return Modint(self.num * __x)

        __radd__ = __add__
        __rmul__ = __mul__

        def __rsub__(self, __x):
            if isinstance(__x, Modint):
                return Modint(__x.num - self.num)
            return Modint(__x - self.num)

        def __pow__(self, __x):
            if isinstance(__x, Modint):
                return Modint(pow(self.num, __x.num, self.MOD))
            return Modint(pow(self.num, __x, self.MOD))

        def __rpow__(self, __x):
            if isinstance(__x, Modint):
                return Modint(pow(__x.num, self.num, self.MOD))
            return Modint(pow(__x, self.num, self.MOD))

        def __truediv__(self, __x):
            if isinstance(__x, Modint):
                return Modint(self.num * pow(__x.num, self.MOD - 2, self.MOD))
            return Modint(self.num * pow(__x, self.MOD - 2, self.MOD))

        def __rtruediv__(self, __x):
            if isinstance(__x, Modint):
                return Modint(__x.num * pow(self.num, self.MOD - 2, self.MOD))
            return Modint(__x * pow(self.num, self.MOD - 2, self.MOD))

    A = list(map(Modint, input().split()))
    S = input()

    res = A[0]
    for op_, value in zip(S, A[1:]):
        match op_:
            case "+":
                res += value
            case "-":
                res -= value
            case "*":
                res *= value
            case "/":
                res /= value

    print(res)


if __name__ == "__main__":
    main()