@[smarthehe](/user/103732) N个数， m个操作
by bcku1 @ 2019-11-15 14:09:09
这不就是值域吗
by bcku1 @ 2019-11-15 14:09:43
@[bcku1](/user/19980)
数的大小啊
by smarthehe @ 2019-11-15 14:38:16
@[smarthehe](/user/103732) 都是int以内
by bcku1 @ 2019-11-15 14:39:55
@[bcku1](/user/19980)
那我不会了
$\sum_{i=l}^r [\varphi(i)==i]$
by smarthehe @ 2019-11-15 14:51:09
@[smarthehe](/user/103732) 那如果是1e5或1e6呢
by bcku1 @ 2019-11-15 14:55:32
@[bcku1](/user/19980)
那可以$O(10^6)$筛
by smarthehe @ 2019-11-15 16:21:57
@[bcku1](/user/19980) 只会Problem 1，自闭了
by Le_temps_des_fleurs @ 2019-11-15 21:29:33
@[FruitCandy](/user/108185) 我也是啊
by bcku1 @ 2019-11-15 21:40:37
@[bcku1](/user/19980) fAKe
by Le_temps_des_fleurs @ 2019-11-15 21:45:03