PAT 1027. Colors in Mars

#include<iostream>

#include<cstdio>

#include<string>

#include<cstring>

#include<queue>

#include<vector>

#include<cmath>

#include<iomanip>

#include<algorithm>

using namespace std;



vector<char> res(int t)

{

	vector<char> v;

	char map[] = {'0','1','2','3','4','5','6','7','8','9','A','B','C'};

	if(t == 0)

		v.push_back('0');

	while(t)

	{

		int tmp = t%13;

		v.push_back(map[tmp]);

		t /= 13;

	}

	return v;

}



void output(vector<char> &v)

{

	if(v.size() == 1)

		cout<<"0"<<v[0];

	else

	{

		for(int i=v.size()-1; i>=0; i--)

			cout<<v[i];

	}

}



int main()

{

	int a1,a2,a3,b1,b2,b3;

	cin>>a1>>a2>>a3;

	vector<char> v1,v2,v3;

	v1 = res(a1);

	v2 = res(a2);

	v3 = res(a3);

	cout<<"#";

	output(v1);

	output(v2);

	output(v3);

	cout<<endl;

	return 0;

}