n, m = map(int, input.split)times = for _ in range(n):x, y = map(int, input.split)times.append(x + y)times.sortcount = 0last_pick = -float('inf')for t in times:if t >= last_pick + m:count += 1last_pick = tprint(count)摘要：m = map(int, input.split)times = for _ in range(n):x, y = map(int, input.split)times.append(x + y)times.sortcount = 0last_pick =
来源：英语学霸肖涵