给定三个十进制数字，转13进制
#include<bits/stdc++.h>
using namespace std;
map<int, char> M = {
{
0, '0'}, {
1, '1'}, {
2, '2'}, {
3, '3'}, {
4, '4'}, {
5, '5'},
{
6, '6'}, {
7, '7'}, {
8, '8'}, {
9, '9'}, {
10, 'A'}, {
11, 'B'}, {
12, 'C'}
};
string convert(int n, int radix = 13){
// 10转13
string rst;
do{
rst.insert(rst.begin() ,M[n % radix] );
n /= radix;
} while(n != 0);
return rst;
}
int main() {
cout << '#';
for(int i=0;i<3;++i){
int num;
cin>>num;
string num_13 = convert(num);
if(num_13.size() == 1)
cout << 0;
cout << num_13 ;
}
return 0;
}