func_code_string: #include <bits/stdc++.h>   using namespace std;   inline int toInt(string s) {     int v;     istringstream sin(s);     sin >> v;     return v;   }   template <class T>   inline string toString(T x) {     ostringstream sout;     sout << x;     return sout.str();   }   template <class T>   inline T sqr(T x) {     return x * x;   }   const double EPS = 1e-10;   const double PI = acos(-1.0);   const int dx[] = {-1, 1, 0, 0};   const int dy[] = {0, 0, 1, -1};   int n, k, ret;   bool us[11];   int main() {     cin >> n >> k;     for (int i = (0); i < (n); ++i) {       string s;       bool f = true;       cin >> s;       for (int j = (0); j < (10); ++j) us[j] = false;       for (int j = (0); j < (s.size()); ++j) us[s[j] -  0 ] = true;       for (int j = (0); j < (k + 1); ++j)         if (!us[j]) f = false;       ret += f;     }     cout << ret << endl;     return 0;   }   