Colors in Mars
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.
Input Specification:
Each input file contains one test case which occupies a line containing the three decimal color values.
Output Specification:
For each test case you should output the Mars RGB value in the following format: first output #, then followed by a 6-digit number where all the English characters must be upper-cased. If a single color is only 1-digit long, you must print a 0 to its left.
Sample Input:
15 43 71
Sample Output:
#123456
题目解析
本题给出3个10进制数字要求转换为13进制数字并输出，根据题意我们可以得出，转化后的每一个数字都不会超过两位。
这样我们可以将十进制数字0~12与对应13进制数字利用map建立映射。之后将每个数字对应输出即可。
1 #include <bits/stdc++.h> 2 using namespace std; 3 map<int, char> radix; 4 void init(){ //建立十进制数与对应13进制数的映射 5 for(int i = 0; i < 10; i++) 6 radix[i] = i + '0'; 7 radix[10] = 'A'; 8 radix[11] = 'B'; 9 radix[12] = 'C'; 10 } 11 int main() 12 { 13 init(); 14 int red, green, blue; 15 scanf("%d%d%d", &red, &green, &blue); 16 //输入三个十进制数 17 //输出时先输出# 18 cout << "#" << radix[red / 13] << radix[red % 13]; 19 //输出转化后的两位数 20 cout << radix[green / 13] << radix[green % 13]; 21 cout << radix[blue / 13] << radix[blue % 13] << endl; 22 return 0; 23 }