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Which Base is it Anyway? Solution:
#include <bits/stdc++.h>
using namespace std;
int main() {
// #ifndef TESTING
// freopen("input.txt", "r", stdin);
// freopen("output.txt", "w", stdout);
// #endif
int cases;
cin >> cases;
while(cases--){
int n_case, result;
size_t converted;
string in;
cin >> n_case >> in;
cout << n_case << " ";
try{
result = stoi(in, &converted, 8);
} catch(invalid_argument e){
converted = 0;
}
if(converted == in.size()){
cout << result << " ";
} else {
cout << "0 ";
}
try {
result = stoi(in, &converted, 10);
} catch(invalid_argument e){
converted = 0;
}
if(converted == in.size()){
cout << result << " ";
} else {
cout << "0 ";
}
try{
result = stoi(in, &converted, 16);
} catch(invalid_argument e){
converted = 0;
}
if(converted == in.size()){
cout << result << endl;
} else {
cout << "0 " << endl;
}
}
return 0;
}