#include <iostream>
#include <string>
#include <algorithm>
#include <vector>
#include <iomanip>
#include <math.h>
#include <complex>
#include <queue>
#include <deque>
#include <stack>
#include <map>
#include <unordered_map>
#include <set>
#include <bitset>
#include <functional>
#include <assert.h>
using ll=long long;
#define int ll
#define rng(i,a,b) for(int i=int(a);i<int(b);i++)
#define rep(i,b) rng(i,0,b)
#define gnr(i,a,b) for(int i=int(b)-1;i>=int(a);i--)
#define per(i,b) gnr(i,0,b)
#define eb emplace_back
#define all(x) x.begin(),x.end()
#define SZ(x) x.size()
#define fi first
#define se second
const int INF = 1e9;
using namespace std;

template<class t> using vc=vector<t>;
template<class t> using vvc=vc<vc<t>>;

using pi=pair<int,int>;
using vi=vc<int>;

template<class T>
inline bool chmax(T &a,T b){if(a<b){a=b;return true;}return false;}
template<class T>
inline bool chmin(T &a,T b){if(a>b){a=b;return true;}return false;}

int da[100010],db[100010];
signed main() {
    cin.tie(0);
    ios::sync_with_stdio(0);
    cout<<fixed<<setprecision(20);

    int N,M,K; cin >> N >> M >> K;
    char c; cin >> c;
    int A[M]; rep(i,M) cin >> A[i];
    int B[N]; rep(i,N) cin >> B[i];
    int sum=0;
    rep(i,M){
        da[i+1]+=A[i]+da[i];
        da[i+1]%=K;
    }
    rep(i,N){
        db[i+1]+=B[i]+db[i];
        db[i+1]%=K;
    }
    if(c=='+'){
        sum+=(da[M]*N)%K+(db[N]*M)%K;
        sum%=K;
    } else {
        rep(i,M){
            sum+=A[i]*db[N];
            sum%=K;
        }
    }
    
    cout << sum << endl;
}