Submission

Score: 100

User: pann

Problemset: แปลงเลขฐาน

Language: cpp

Time: 0.002 second

Submitted On: 2026-10-04 18:15:55

#include <iostream>
#include <math.h>
#include <algorithm>
using namespace std;

int main(){
    string hex;
    cin >> hex;
    int dec = 0;
    for(int i = hex.length()-1; i >= 0; i--){
        int n;
        if (hex[i] >= 'A' && hex[i] <= 'Z'){
            n = 10+hex[i]-'A';
        }
        else {
            n = hex[i] - '0';
        }
        dec += n*pow(16, hex.length()-1-i);
    }

    string binary = "";
    int a = dec;
    while (dec > 0){
        binary += (char)(dec%2 + '0');
        dec /= 2;
    }
    reverse(binary.begin(), binary.end());
    cout << binary << "\n";

    string octal = "";
    while (a > 0){
        octal += (char)(a%8 + '0');
        a /= 8;
    }
    reverse(octal.begin(), octal.end());
    cout << octal;
    return 0;
}