import std;


print("Counting down...");
var from = 10;
let to = 0;
while from > to {
    print(from);
    from = from - 1;
}
print("Done!");

print("Counting up...");
var start = 0;
let stop = 10;
while start < stop {
    print(start);
    start = start + 1;
}
print("Done!");