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#include <iostream>

void calc(int i, unsigned long long mem[], const int ones[], const int twos[]) {
    if (i > 0) {
        if (mem[i - 1] == 0) {
            calc(i - 1, mem, ones, twos);
        }

        mem[i] = (ones[i] + 1) * mem[i - 1];

        if (twos[i - 1] < 19 && twos[i - 1] > 9) {
            if (i > 1) {
                mem[i] += (19 - twos[i - 1]) * mem[i - 2];
            }
            else if (i == 1) {
                mem[i] += 19 - twos[i - 1];
            }
        }
    }
}

int main() {
    unsigned long long n;

    std::cin >> n;

    unsigned long long copy = n;
    int size = 0;

    while (copy != 0) {
        ++size;
        copy /= 10;
    }

    unsigned long long mem[size];
    int ones[size], twos[size - 1], i = 0;

    while (n != 0) {
        ones[i] = static_cast<int>(n % 10);

        if (n > 9) {
            twos[i] = static_cast<int>(n % 100);
        }

        mem[i] = 0;
        n /= 10;
        ++i;
    }

    mem[0] = ones[0] + 1;

    calc(size - 1, mem, ones, twos);
    std::cout << mem[size - 1];

    return 0;
}