#include <iostream>
#include <fstream>
#include <map>
using namespace std;
//map<long,long> H;
#define P1 7
#define P2 29
#define P3 281
//long S[P1][P2][P3];
long H[P1][P2][P3];
int main() {
    ifstream I("oite.in");
    ofstream O("oite.out");
    long C,L, A[1024];
    I >> C >> L;
    int i,j,k,l;
    for(i=0;i<C;i++)
        I >> A[i];
    for(i=0;i<C;i++) {
        for(j=i+1;j<C;j++) {
            for(k=j+1;k<C;k++) {
                for(l=k+1;l<C;l++) {
                    long s = A[i]+A[j]+A[k]+A[l];
                    H[s % P1][s % P2][s % P3]++;
                };
            };
        };
    };
    O << H[L%P1][L%P2][L%P3];
};