백준 2908 - 상수

#include <iostream>
#include <string>
 
using namespace std;
 
int main(void) {
    int A, B;
    cin >> A;
    cin >> B;
    string sA, sB;
    sA = to_string(A);
    sB = to_string(B);
    string sA2 = "";
    string sB2 = "";
 
    for(int i=sA.length()-1; i>=0; i--) {
        sA2.append(1, sA.at(i));
    }
    for(int i=sB.length()-1; i>=0; i--) {
        sB2.append(1, sB.at(i));
    }
 
    int newA, newB;
    newA = stoi(sA2);
    newB = stoi(sB2);
 
    if(newA > newB)
        cout << newA << endl;
    else
        cout << newB << endl;
 
    return 0;
}