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  1. #include <iostream>
  2. #include <string>
  3. #include <sstream>
  4.  
  5. int num4base(int base, char c) {
  6.   if (c >= '0' && c <= '9')
  7.     return c - '0';
  8.   if (c >= 'a' && c <= 'z')
  9.     return c - 'a' + 10;
  10.   if (c >= 'A' && c <= 'Z')
  11.     return c - 'A' + 10;  
  12.   return -1;
  13. }
  14.  
  15. unsigned int interpret4base(int base, const std::string &value) {
  16.   unsigned int r = 0;
  17.   for (std::string::const_iterator p = value.begin(); p != value.end(); p++) {
  18.     r *= base;
  19.     r += num4base(base, *p);
  20.   }
  21.   return r;
  22. }
  23.  
  24. char digit2char(int v) {
  25.   if (v >= 0 && v <= 9)
  26.     return v + '0';
  27.   if (v >= 10 && v <= 35)
  28.     return v - 10 + 'a';
  29.   return -1;
  30. }
  31.  
  32.  
  33. std::string change4base(int base, unsigned int n) {
  34.   std::string ret;
  35.   if (n == 0) return "";
  36.   ret = change4base(base, n / base);
  37.   ret += digit2char(n % base);
  38.   return ret;
  39. }
  40.  
  41. int main() {
  42.   std::string linebuff;
  43.   while (std::getline(std::cin, linebuff)) {
  44.     std::istringstream ss_line(linebuff);
  45.     int b;
  46.     std::string v;
  47.     while (ss_line >> b >> v) {
  48.       unsigned int n = interpret4base(b, v);
  49.       /**/std::cout << "n = " << n << std::endl;
  50.       for (int i = 2; i <= 36; i++) {
  51.         std::cout << i << "#";
  52.         std::cout << change4base(i, n) << std::endl;
  53.       }
  54.     }
  55.     return 0;
  56.   }
  57. }
  58. /* end */
  59.  
  60.  
Success #stdin #stdout 0s 4400KB
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stdin
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16 deadbabe
stdout
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n = 3735927486
2#11011110101011011011101010111110
3#100122100210210001200
4#3132223123222332
5#30122344134421
6#1414413520330
7#161402600604
8#33653335276
9#10570723050
10#3735927486
11#1647919685
12#8831a30a6
13#476cc28a5
14#276253874
15#16ceb1726
16#deadbabe
17#91d36cc6
18#61f27270
19#437f24b8
20#2i79aie6
21#21bff6ii
22#1akk149g
23#125a42hj
24#jd49956
25#f7do8ob
26#c2b8boi
27#9h9ll1i
28#7l225hi
29#6842o9l
30#53m7kg6
31#46f9hir
32#3farelu
33#2tf7mor
34#2e7m366
35#214kbpb
36#1ps9w3i
https://ideone.com/iLZ4Ad
language:
C++ (gcc 8.3)
created:
7 years ago
visibility:
public

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