1027. Colors in Mars (20)

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

Each input file contains one test case which occupies a line containing the three decimal color values.

Output

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 the left.

15 43 71

#123456

简析：一次ac，不解释，看代码。

#include <iostream>
using namespace std;

int main(int argc, const char * argv[]) {
    int a, b, c, i, d[6] = {0};
    scanf("%d%d%d", &a, &b, &c);
    i = 1;
    while (a) {
        d[i--] = a % 13;
        a /= 13;
    }
    i = 3;
    while (b) {
        d[i--] = b % 13;
        b /= 13;
    }
    i = 5;
    while (c) {
        d[i--] = c % 13;
        c /= 13;
    }
    
    char s[13] = {'0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C'};
    
    printf("#");
    for (int i = 0; i < 6; i++) {
        printf("%c", s[d[i]]);
    }
    printf("\n");
    
    return 0;
}