BOJ 13877 - 이건 무슨 진법이지? [C++]

문제

링크

풀이

#include <iostream>
#include <string>
using namespace std;
 
inline int octal(const string &s) {
  for (char c : s) if (c > '7') return 0;
  return stoi(s, nullptr, 8);
}
 
inline int dec(const string &s) {
  return stoi(s);
}
 
inline int hexa(const string &s) {
  return stoi(s, nullptr, 16);
}
 
void solve(void) {
  int idx; string s; cin >> idx >> s;
 
  cout << idx << " " << octal(s) << " " << dec(s) << " " << hexa(s) << "\n";
}
 
int main(void) {
  ios::sync_with_stdio(false);
  cin.tie(nullptr);
 
  int t; cin >> t;
  while (t--) solve();
  return 0;
}