#include <iostream>
using namespace std;
int main() {
int a, b;
cin >> a >> b;
if ((a * 2) > (b * 3)) {
cout << a * 2;
} else if ((a * 2) < (b * 3)) {
cout << (b * 3) + (a * 2);
} else {
cout << "NECASTIGATOR!";
}
return 0;
}
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