#include <bits/stdc++.h>
#include <iostream>
using namespace std;
#pragma GCC optimize("Ofast")
#pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native")
#define rep(i,a,b) for(LL i = a;i<b; i++)
#define rrep(i,a,b) for(LL i = a;i>b; i--)
#define tobirep(i,a,b,c) for(LL i = a;i<b; i+=c)
#define tobirrep(i,a,b,c) for(LL i = a;i>b; i-=c)
#define INF ((1LL<<62)-(1LL<<31))
#define ooki 9223372036854775807
#define tii -9223372036854775808
typedef long long LL;
int main(){  
 ios::sync_with_stdio(0);cin.tie(nullptr);
  LL n,m,k,sum=0;
  cin >> n >> m >> k;
  vector<LL> a(n);
  vector<LL> b(m);
  rep(i,0,m){cin >> b[i];}
  rep(i,0,n){cin >> a[i];} 
  char g;
  cin >> g;
  if(g=='+'){
    rep(i,0,n){
      rep(j,0,m){
      sum+=a[i]+b[j];
      sum=sum%k;
      }
    }
   cout << sum << '\n';
  }
  
  if(g=='*'){
   rep(i,0,n){
    rep(j,0,m){
      sum+=a[i]*b[j];
      sum=sum%k;
    }
   }
   cout << sum << '\n';
  }
}