Division and Union CodeForces - 1101C （排序后处理）
There are n">nn segments [li,ri]">[li,ri][li,ri] for 1≤i≤n">1≤i≤n1≤i≤n. You sh ...
花费 5 ms
There are n">nn segments [li,ri]">[li,ri][li,ri] for 1≤i≤n">1≤i≤n1≤i≤n. You sh ...