1027 Colors in Mars (20 分)

1027 Colors in Mars (20 分)

 

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


转十三进制，话不多的说，水题

#include <bits/stdc++.h>
using namespace std;
int main(){
    string s;
    s = '#';
    int n;
    for(int i = 0; i < 3; i++){
        cin >> n;
        string st="";
        while(n){
            int k = n%13;
            if(k > 9){
                st += (k-10) + 'A';
            }else{
                st += k + '0';
            }
            n /= 13;
        }
        if(st.length() == 1){
            st += '0';
        }else if(st == ""){
            st = "00";
        }
        reverse(st.begin(),st.end());
        s += st;
    }
    cout << s << endl;
    return 0;
}