#include <bits/stdc++.h>

using namespace std;
const int INF = 0x3f3f3f3f;
typedef long long LL;
string str = "0123456789ABCDEF";

int main() {
    //十六进制转十进制
    int n = 114514;

    //容器
    vector<string> v;
    //类似于数位分离
    while (n) {
        int a = n % 16;
        v.push_back(str.substr(a, 1));
        n /= 16;
    }
    //反着输出
    for (int i = v.size() - 1; i >= 0; i--) cout << v[i];
    return 0;
}