int x = 0;
for (int i = 0; i < 10; i += 1) {
    x += i;
}
print(x);
for (int i = 0; i < 10; i += 1) {
    x -= i;
}
print(x);
for (int i = 0; i < 4; i += 1) {
    x = (x + 1) * i;
}
print(x);