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import std.algorithm, std.stdio;
void main()
{
static struct Point
{
int x, y;
}
auto pts1 = [Point(0, 0), Point(5, 5), Point(0, 1), Point(0, 2)];
multiSort!("a.x < b.x", "a.y < b.y", SwapStrategy.unstable)(pts1).release.writeln;
}