摘要
Title: A1027 Colors in Mars
Tag: 进制
Memory Limit: 64 MB
Time Limit: 1000 ms

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• 题意
• 思路
• 代码

A1027 Colors in Mars

• 题意

  People in Mars represent the colors in their computers in a similar way as the Earth people. That is, a color is represented by a 6-digit number, where the first 2 digits are for Red, the middle 2 digits for Green, and the last 2 digits for Blue. The only difference is that they use radix 13 (0-9 and A-C) instead of 16. Now given a color in three decimal numbers (each between 0 and 168), you are supposed to output their Mars RGB values.

• 思路

  经典的进制转换代码

  if (x <= 9)
      return '0' + x;
  else
      return 'A' + x - 10;

• 代码

  /*
  * @Author: NEFU AB-IN
  * @Date: 2023-01-07 17:17:47
  * @FilePath: \GPLT\A1027\A1027.cpp
  * @LastEditTime: 2023-01-07 17:35:20
  */
  #include <bits/stdc++.h>
  using namespace std;
  #define N n + 100
  #define int long long
  #define SZ(X) ((int)(X).size())
  #define IOS                                                                                                            \
      ios::sync_with_stdio(false);                                                                                       \
      cin.tie(nullptr);                                                                                                  \
      cout.tie(nullptr)
  #define DEBUG(X) cout << #X << ": " << X << '\n'
  typedef pair<int, int> PII;
  
  // #undef N
  // const int N = 1e5 + 10;
  
  // #undef int
  
  string f(int x)
  {
      string s;
      while (x)
      {
          int k = x % 13;
          if (k <= 9)
              s += '0' + k;
          else
              s += 'A' + k - 10;
          x /= 13;
      }
      int sz = SZ(s);
      for (int i = 0; i < 2 - sz; ++i)
          s += '0';
      reverse(s.begin(), s.end());
      return s;
  }
  
  signed main()
  {
      IOS;
      int r, g, b;
      cin >> r >> g >> b;
  
      cout << "#" << f(r) << f(g) << f(b);
  
      return 0;
  }