func_code_string: #include <bits/stdc++.h>   using namespace std;   int main() {     vector<string> v;     for (int i = 0; i < 3; i++) {       string s;       cin >> s;       v.push_back(s);     }     vector<string> so;     vector<string> po;     vector<string> mo;     for (int i = 0; i < v.size(); i++) {       if (v[i][1] ==  s )         so.push_back(v[i]);       else if (v[i][1] ==  p )         po.push_back(v[i]);       else if (v[i][1] ==  m )         mo.push_back(v[i]);     }     sort(so.begin(), so.end());     sort(po.begin(), po.end());     sort(mo.begin(), mo.end());     if (v[0] == v[1] && v[1] == v[2])       cout << 0 << endl;     else if (v[0] == v[1] || v[0] == v[2] || v[1] == v[2])       cout << 1 << endl;     else if (so.size() == 3) {       int m1 = (so[2][0] -  0 ) - (so[1][0] -  0 );       int m2 = (so[1][0] -  0 ) - (so[0][0] -  0 );       if (m1 == 1 && m2 == 1)         cout <<  0  << endl;       else if (m1 <= 2 || m2 <= 2)         cout <<  1  << endl;       else         cout <<  2  << endl;     } else if (mo.size() == 3) {       int m1 = (mo[2][0] -  0 ) - (mo[1][0] -  0 );       int m2 = (mo[1][0] -  0 ) - (mo[0][0] -  0 );       if (m1 == 1 && m2 == 1)         cout <<  0  << endl;       else if (m1 <= 2 || m2 <= 2)         cout <<  1  << endl;       else         cout <<  2  << endl;     } else if (po.size() == 3) {       int m1 = (po[2][0] -  0 ) - (po[1][0] -  0 );       int m2 = (po[1][0] -  0 ) - (po[0][0] -  0 );       if (m1 == 1 && m2 == 1)         cout <<  0  << endl;       else if (m1 <= 2 || m2 <= 2)         cout <<  1  << endl;       else         cout <<  2  << endl;     } else if (so.size() == 2) {       int m1 = (so[1][0] -  0 ) - (so[0][0] -  0 );       if (m1 == 1 || m1 == 2)         cout <<  1  << endl;       else         cout <<  2 n ;     } else if (mo.size() == 2) {       int m1 = (mo[1][0] -  0 ) - (mo[0][0] -  0 );       if (m1 == 1 || m1 == 2)         cout <<  1  << endl;       else         cout <<  2 n ;     } else if (po.size() == 2) {       int m1 = (po[1][0] -  0 ) - (po[0][0] -  0 );       if (m1 == 1 || m1 == 2)         cout <<  1  << endl;       else         cout <<  2 n ;     } else       cout <<  2 n ;     return 0;   }   