#include <iostream>
#include <cmath>
using namespace std;
int main() {
for (int x = 50; x >= 40; --x)
cout << "X=" << x << " Y=" << 5 * x + pow(x, 2) << "\n";
return 0;
}
#include <iostream>
#include <cmath>
using namespace std;
int main() {
for (int x = 50; x >= 40; --x)
cout << "X=" << x << " Y=" << 5 * x + pow(x, 2) << "\n";
return 0;
}