如题

原题面中给出的Ti时间限制为0 ≤ Ti ≤ 1,000

但是翻译的时候似乎漏掉了

The reports say that M meteors (1 ≤ M ≤ 50,000) will strike, with meteor i will striking point (Xi, Yi) (0 ≤ Xi ≤ 300; 0 ≤ Yi ≤ 300) at time Ti (0 ≤ Ti  ≤ 1,000).