func_code_string: #include <bits/stdc++.h>   using namespace std;   const int maxn = 1e6 + 5;   int n, m, p;   const double PI = acos(-1);   vector<int> a, b;   int main() {     ios_base::sync_with_stdio(false);     cin.tie(NULL);     cout.tie(NULL);     ;     cin >> n >> m >> p;     for (int i = (int)1; i <= (int)n; i++) {       int x;       cin >> x;       a.push_back(x);     }     for (int i = (int)1; i <= (int)m; i++) {       int x;       cin >> x;       b.push_back(x);     }     int i = 0, j = 0;     while (i < n) {       if (a[i] % p != 0) break;       i++;     }     while (j < m) {       if (b[j] % p != 0) break;       j++;     }     cout << i + j << endl;   }   