public void MinimumSegmentTreeTest()
{
var data = new int[] { 1, 2, 3, 4, 5 }.Select(i => new MinInt(i)).ToArray();
var segmentTree = new SegmentTree <MinInt>(data);
Assert.Equal(1, segmentTree.Query(0..5));
Assert.Equal(3, segmentTree.Query(2..5));
segmentTree[4] = new MinInt(0);
Assert.Equal(0, segmentTree.Query(0..5));
Assert.Equal(1, segmentTree.Query(0..4));
segmentTree[^ 4] = new MinInt(-5);
public MinInt Merge(MinInt other) => Value < other.Value ? this : other;