#include <bits/stdc++.h>   using namespace std;   const bool debug = false;   const int inf = 1000 * 1000 * 1000;   const int MAKSN = 1000 + 13;   const long long MOD = 123456789LL;   int n, m, k, l, x, y, a, b, p;   string s;   vector<int> v;   void readIn() {     cin >> n >> m >> p;     x = 0;     for (int i = 0; i < (int)n; i++) {       cin >> k;       if (k % p != 0 && x == 0) {         a = i;         x = 1;       }     }     for (int i = 0; i < (int)m; i++) {       cin >> k;       if (k % p != 0) {         cout << a + i <<   n ;         return;       }     }   }   void solve() {}   int main() {     ios_base::sync_with_stdio(0);     cin.tie(0);     cout.tie(0);     readIn();     solve();     return 0;   }   