Problems
Dino and colors
include <bits/stdc++.h>
using namespace std;
int main () {
long long a, b, c, d;
cin >> a >> b;
if (a - (2 * b) > 0) {
cout << a - (2 * b);
}
else {
cout << 0;
}
}
using namespace std;
int main () {
long long a, b, c, d;
cin >> a >> b;
if (a - (2 * b) > 0) {
cout << a - (2 * b);
}
else {
cout << 0;
}
}