Submission

Score: 84

User: kodpungtu

Problemset: บวกเลขฐาน

Language: cpp

Time: 0.004 second

Submitted On: 2025-10-02 16:23:59

#include <bits/stdc++.h>

using namespace std;

int toDec(int b, string s) {
    int dec = 0;
    for (int i = s.length() -1; i >= 0; i--) {
        if (s[i] < '9') {
            dec += int(s[i] - '0') * pow(b, s.length() - i - 1);
        } else {
            dec += int(s[i] - 'A' + 10) * pow(b, s.length() - i - 1);
        }
    }
    return dec;
}

string toBase(int b, int num) {
    string ans = "";
    int n = num;
    while (n > 0) {
        int d = n % b;
        n /= b;
        if (d <= 9) {
            ans += to_string(d);
        } else {
            ans += char(d + 'A' - 10);
        }
    }
    reverse(ans.begin(), ans.end());
    return ans;
}

int main() {
    int base;
    string x, y;
    cin >> base >> x >> y;
    
    cout << toBase(base, toDec(base, x) + toDec(base, y));
}