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/* Copyright <c> Manoel Vilela 2017 */
// HackerRank Exception Server
// Description: Write custom exceptions based on the throws
#include <iostream>
#include <exception>
#include <string>
#include <stdexcept>
#include <vector>
#include <cmath>
using namespace std;
class Server {
private:
static int load;
public:
static int compute(long long A, long long B) {
load += 1;
if(A < 0) {
throw std::invalid_argument("A is negative");
}
vector<int> v(A, 0);
int real = -1, cmplx = sqrt(-1);
if(B == 0) throw 0;
real = (A/B)*real;
int ans = v.at(B);
return real + A - B*ans;
}
static int getLoad() {
return load;
}
};
int Server::load = 0;
int main() {
int T; cin >> T;
while(T--) {
long long A, B;
cin >> A >> B;
// write the logic here...
try {
cout << Server::compute(A, B) << endl;
} catch (bad_alloc e) {
cout << "Not enough memory" << endl;
} catch (exception const& e) {
cout << "Exception: " << e.what() << endl;
} catch (...) {
cout << "Other Exception" << endl;
}
}
cout << Server::getLoad() << endl;
return 0;
}