func_code_string: #include <bits/stdc++.h>   #pragma GCC optimize( Ofast,no-stack-protector )   #pragma GCC target( sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx )   #pragma GCC target( avx,tune=native )   using namespace std;   const int inf = 0x3f3f3f3f;   const double eps = 1e-6;   const int mod = 1000000007;   inline string getstr(string &s, int l, int r) {     string ret =   ;     for (int i = l; i <= r; i++) ret.push_back(s[i]);     return ret;   }   int modpow(int x, int y, int md = mod) {     if (y == 0) return 1;     int ret = modpow(x, y >> 1, md);     ret = (long long)ret * ret % md;     if (y & 1) ret = (long long)ret * x % md;     return ret;   }   int n, m, t, ans;   int a[10001];   int cnt[10005];   int in[11];   inline int calc(int use) {     int ret = 1;     for (int i = 1; i <= use; i++) {       ret = (long long)ret * cnt[in[i]] % mod;     }     return ret;   }   void dfs(int use, int last, bitset<128> now) {     ans += calc(use);     if (ans >= mod) ans -= mod;     for (int i = last + 1; i <= m / 2; i++) {       if (cnt[i]) {         if (now[i] || now[m - i]) continue;         bitset<128> bs =             now | (now >> i) | (now << i) | (now >> (m - i)) | (now << (m - i));         in[use + 1] = i;         dfs(use + 1, i, bs);       }     }   }   bitset<128> bs;   int main() {     bs.reset();     bs.set(0);     cin >> n >> m >> t;     for (int i = 0; i < t; i++) cin >> a[i], cnt[min(m - a[i] % m, a[i] % m)]++;     dfs(0, 0, bs);     cout << ans << endl;     return 0;   }   