d.cpp

#inlude <bits/stdc++.h>

using namespace std;

const int MOD = (int)1e9+7;

int count_zeros(const vector<int>& a) {
    int answ = 0; for (auto it : a) answ += it == 0; return answ;
}

int main() {
    int n, nLetters; cin >> n >> nLetters;

    vector<int> a(n), b(n);
    for (auto& it : a) cin >> it;
    for (auto& it : b) cin >> it;

    int64_t P = 0, Q = count_zeros(a) + count_zeros(b);
    int64_t q = Q;
    int64_t mul = 1;

    for (int i = 0; i < n; ++i) {
        if (a[i] > 0 && b[i] > 0) {
            if (a[i] > b[i]) {
                P = P + mul * q;
                break;
            } else if (a[i] < b[i]) {
                break;
            }
        } else if (a[i] > 0 && b[i] == 0) {
            P = P + mul * (a[i]-1) * q;
            mul = 1;
        } else if (a[i] == 0 && b[i] > 0) {

        } else if (a[i] == 0 && b[i] == 0) {

        }
    }



    return 0;
}