using namespace std;
int main() {
int sum1 = 100 + 50; // 150 (100 + 50)
int sum2 = sum1 + 250; // 400 (150 + 250)
int sum3 = sum2 + sum2; // 800 (400 + 400)
cout << sum1 << "\n";
cout << sum2 << "\n";
cout << sum3;
return 0;
}