TLE already accepted solution

#	User	Rating
1	tourist	3985
2	jiangly	3814
3	jqdai0815	3682
4	Benq	3529
5	orzdevinwang	3526
6	ksun48	3517
7	Radewoosh	3410
8	hos.lyric	3399
9	ecnerwala	3392
9	Um_nik	3392

#	User	Contrib.
1	cry	169
2	maomao90	162
2	Um_nik	162
4	atcoder_official	160
5	djm03178	158
6	-is-this-fft-	157
7	adamant	155
8	Dominater069	154
8	awoo	154
10	luogu_official	151

I was trying to solve Design Tutorial: Inverse the Problem and got TLE all the time. So at some point I resubmitted some already accepted solution by xujiahe and I still got TLE. I even made sure that it is the same compiler.

Accepted solution

Same solution TLE

rex321's blog