pat 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

#include <iostream>
#include <algorithm>
#include <cstdio>
#include <cstring>
#include <map>
#include <stack>
#include <vector>
#include <queue>
#include <set>
#define LL long long
using namespace std;
const int MAX = 30;

void calc13(int n)
{
    stack <char> st;
    while (n)
    {
        int temp = n % 13;
        if (temp >= 10) st.push('A' + temp - 10);
        else st.push('0' + temp);
        n /= 13;
    }
    int len = 2 - st.size();
    while (len --)
        cout <<'0';
    while (st.size())
    {
        cout <<st.top();
        st.pop();
    }
}

int main()
{
    int a, b, c;
//    freopen("Date1.txt", "r", stdin);
    scanf("%d%d%d", &a, &b, &c);
    cout <<'#';
    calc13(a) ,calc13(b) ,calc13(c) ,
    cout <<endl;
    return 0;
}