func_code_string: #include <bits/stdc++.h>   using namespace std;   int charToDec(char c) {     if ((c >=  0 ) && (c <=  9 )) return c -  0 ;     if ((c >=  A ) && (c <=  Z )) return c -  A  + 10;   }   char decToChar(int c) {     if ((c >= 0) && (c <= 9)) return c +  0 ;     if ((c >= 10) && (c <= 26)) return c +  A  - 10;   }   long long hzToDec(string s, int a) {     long long r = 0;     for (int i = 0; i < s.length(); i++) {       r *= a;       r += charToDec(s[i]);     }     return r;   }   string decToHz(long long x, int a) {     string s =   ;     while (x > 0) {       s = decToChar(x % a) + s;       x = x / a;     }     if (s ==   ) s =  0 ;     return s;   }   string toRome(long long X) {     string r[3100];     r[3000] =  MMM ;     r[2000] =  MM ;     r[1000] =  M ;     r[900] =  CM ;     r[800] =  DCCC ;     r[700] =  DCC ;     r[600] =  DC ;     r[500] =  D ;     r[400] =  CD ;     r[300] =  CCC ;     r[200] =  CC ;     r[100] =  C ;     r[90] =  XC ;     r[80] =  LXXX ;     r[70] =  LXX ;     r[60] =  LX ;     r[50] =  L ;     r[40] =  XL ;     r[30] =  XXX ;     r[20] =  XX ;     r[10] =  X ;     r[9] =  IX ;     r[8] =  VIII ;     r[7] =  VII ;     r[6] =  VI ;     r[5] =  V ;     r[4] =  IV ;     r[3] =  III ;     r[2] =  II ;     r[1] =  I ;     return r[X / 1000 * 1000] + r[(X % 1000) / 100 * 100] +            r[(X % 100) / 10 * 10] + r[X % 10];   }   int main() {     int a, b;     string bb, x;     long long x10;     cin >> a >> bb >> x;     x10 = hzToDec(x, a);     if (bb ==  R ) {       cout << toRome(x10);     } else       cout << decToHz(x10, atoi(bb.c_str()));     return 0;   }   