#!/usr/bin/env python

import enum
import functools
import operator
import sys


class Op(enum.StrEnum):
    ADD = "+"
    MUL = "*"


def solve(input: list[str]) -> int:
    def parse(input: list[str]) -> tuple[list[list[int]], list[Op]]:
        raw_nums, raw_ops = input[:-1], input[-1]
        matrix = [[int(n) for n in line.split()] for line in raw_nums]
        ops = [Op(c) for c in raw_ops.split()]
        return matrix, ops

    def transpose(matrix: list[list[int]]) -> list[list[int]]:
        return list(map(list, zip(*matrix, strict=True)))

    def apply(op: Op, nums: list[int]) -> int:
        f = {
            Op.ADD: operator.add,
            Op.MUL: operator.mul,
        }[op]
        return functools.reduce(f, nums)

    matrix, ops = parse(input)
    return sum(apply(op, nums) for op, nums in zip(ops, transpose(matrix), strict=True))


def main() -> None:
    input = sys.stdin.read().splitlines()
    print(solve(input))


if __name__ == "__main__":
    main()