---
tags: codebook
---

{%hackmd theme-dark %}

# utos(for generate problem)

#include<vector>
#include<algorithm>
using namespace std;

string utos(unsigned x){
	string str;
	while(x) str.push_back(x%10+'0'),x/=10;
	str.resize(2,'0');
	reverse(str.begin(),str.end());
	return str;
}