func_code_string: #include <bits/stdc++.h>   using namespace std;   using namespace std;   typedef long long int ll;   typedef unsigned long long int ull;   inline void smax(int &x, int y) { x = max(x, y); }   inline void smin(int &x, int y) { x = min(x, y); }   ll gcd(ll a, ll b) { return ((b == 0) ? a : gcd(b, a % b)); }   const double PI = acos(-1.0l);   vector<long long> rev;   vector<complex<double> > omega;   void calc_rev(long long n, long long log_n) {     rev.resize(n);     omega.resize(n);     for (long long i = 0; i < n; i++) {       rev[i] = 0;       for (long long j = 0; j < log_n; j++) {         if ((i >> j) & 1) rev[i] |= 1 << (log_n - j - 1);       }     }   }   void fft(vector<complex<double> > &A, long long n, bool invert) {     for (long long i = 0; i < n; i++) {       if (i < rev[i]) swap(A[i], A[rev[i]]);     }     for (long long len = 2; len <= n; len <<= 1) {       double ang = 2 * PI / len * (invert ? -1 : +1);       long long half = (len >> 1);       complex<double> curomega(cos(ang), sin(ang));       omega[0] = complex<double>(1, 0);       for (long long i = 1; i < half; i++) omega[i] = omega[i - 1] * curomega;       for (long long i = 0; i < n; i += len) {         complex<double> t;         long long pu = i, pv = i + half, pu_end = i + half, pw = 0;         for (; pu != pu_end; pu++, pv++, pw++) {           t = A[pv] * omega[pw];           A[pv] = A[pu] - t;           A[pu] += t;         }       }     }     if (invert)       for (long long i = 0; i < n; i++) A[i] /= n;   }   void multiply(long long n, vector<complex<double> > &A,                 vector<complex<double> > &B, vector<long long> &C) {     fft(A, n, false);     fft(B, n, false);     for (long long i = 0; i < n; i++) A[i] *= B[i];     fft(A, n, true);     for (long long i = 0; i < n; i++) {       C[i] = (long long)(A[i].real() + 0.5);       C[i] = min(C[i], 1LL);     }   }   void Solve(long long n, vector<long long> &coeffA, vector<long long> &coeffB,              vector<long long> &result) {     vector<complex<double> > A(n), B(n);     for (long long i = 0; i < n; i++) A[i] = coeffA[i];     for (long long i = 0; i < n; i++) B[i] = coeffB[i];     multiply(n, A, B, result);   }   void do_FFT(vector<long long> &A, vector<long long> &B,               vector<long long> &result) {     long long n = 1, bits = 0;     while (n < 2 * A.size() || n < 2 * B.size()) n <<= 1, bits++;     result.resize(n, 0);     calc_rev(n, bits);     vector<long long> tempA(A.begin(), A.end());     vector<long long> tempB(B.begin(), B.end());     tempA.resize(n);     tempB.resize(n);     Solve(n, tempA, tempB, result);   }   vector<ll> polpow(vector<ll> &arr, long long k) {     vector<ll> sol;     while (k > 0) {       if (k % 2) {         if (sol.size() == 0)           for (__typeof(arr.size()) i = (0) - ((0) > (arr.size()));                i != (arr.size()) - ((0) > (arr.size()));                i += 1 - 2 * ((0) > (arr.size())))             sol.push_back(arr[i]);         else           do_FFT(sol, arr, sol);       }       do_FFT(arr, arr, arr);       k = k / 2;     }     return sol;   }   int32_t main() {     long long n, k;     cin >> n >> k;     vector<long long> v(n);     for (__typeof(n) i = (0) - ((0) > (n)); i != (n) - ((0) > (n));          i += 1 - 2 * ((0) > (n)))       cin >> v[i];     vector<ll> arr(1001);     for (__typeof(n) i = (0) - ((0) > (n)); i != (n) - ((0) > (n));          i += 1 - 2 * ((0) > (n))) {       arr[v[i]] = 1;     }     while (arr.back() == 0) {       arr.pop_back();     }     vector<ll> res = polpow(arr, k);     for (__typeof(res.size()) i = (1) - ((1) > (res.size()));          i != (res.size()) - ((1) > (res.size()));          i += 1 - 2 * ((1) > (res.size()))) {       if (res[i] > 0) cout << i <<    ;     }   }   