1027 Colors in Mars (20point(s)) Easy only once

 1 #include<iostream>
 2 #include<stdlib.h>
 3 #include<stdio.h>
 4 #include<vector> 
 5 #include<string>
 6 #include<math.h>
 7 #include<algorithm>
 8 using namespace std;
 9 using std::vector;
10 
11 string trans(int t) {
12     string s;
13     int a;
14     while (t != 0) {
15         a = t % 13;
16         if (a < 10) {
17             s.push_back(‘0‘ + a);
18         }
19         else {
20             s.push_back(‘A‘ + a - 10);
21         }
22         t /= 13;
23     }
24     while (s.size()<2)
25         s.push_back(‘0‘);
26     reverse(s.begin(), s.end());;
27     return s;
28 }
29 
30 int main() {
31     int a, b, c;
32     scanf("%d %d %d", &a, &b, &c);
33     cout << "#" << trans(a) << trans(b) << trans(c);
34     system("pause");
35     return 0;
36 }