[알고리즘] 백준 15873 - 공백 없는 A+B

#include <iostream>
using namespace std;

int main(){
    int A;
    int B = 0;
    cin >> A;
        
    if(A == 1010){
        cout << 20 << "\n";
    }
    else if(A % 10 == 0){
        A /= 100;
        cout << 10 + A << "\n";
    }
    else{
        B += A % 10;
        A /= 10;
        if(A == 10){
            cout << 10 + B << "\n";
        }
        else{
            cout << A + B << "\n";
        }
    }
    return 0;
}