似乎并没有
by M_seа @ 2017-08-25 22:07:23
为啥是200000^3\*10^6?
n <= 200000, m <= 200000, w[i] <= 10^6
j <= n
设t =∑ w[j] <= 2 \* 10^11
j = 1
ans = mt <= 2\*10^5\*2\*10^11=4\*10^16 < 2^17-1 = 9.223372036854885817\*10^17
by dyxx @ 2017-08-27 11:36:56