`WA`掉了第三个点
by ELLIAS @ 2018-08-10 13:54:32
@[ELLIAS](/space/show?uid=65678) 请问：
```cpp
#pragma GCC optimize ("-fdelete-null-pointer-checks,inline-functions-called-once,-funsafe-loop-optimizations,-fexpensive-optimizations,-foptimize-sibling-calls,-ftree-switch-conversion,-finline-small-functions,inline-small-functions,-frerun-cse-after-loop,-fhoist-adjacent-loads,-findirect-inlining,-freorder-functions,no-stack-protector,-fpartial-inlining,-fsched-interblock,-fcse-follow-jumps,-fcse-skip-blocks,-falign-functions,-fstrict-overflow,-fstrict-aliasing,-fschedule-insns2,-ftree-tail-merge,inline-functions,-fschedule-insns,-freorder-blocks,-fwhole-program,-funroll-loops,-fthread-jumps,-fcrossjumping,-fcaller-saves,-fdevirtualize,-falign-labels,-falign-loops,-falign-jumps,unroll-loops,-fsched-spec,-ffast-math,Ofast,inline,-fgcse,-fgcse-lm,-fipa-sra,-ftree-pre,-ftree-vrp,-fpeephole2", 3)
```
是什么鬼。
by Error_502 @ 2018-08-10 14:07:23
@[502_Bad_Gateaway](/space/show?uid=78393) 各种优化
by Rbu_nas @ 2018-08-10 14:13:05
@[502_Bad_Gateaway](/space/show?uid=78393) 编译命令,加一些优化
~~在G++上会CE~~
by ELLIAS @ 2018-08-10 14:13:46
你这优化
by AstoriaG @ 2018-08-10 14:24:28
这优化骚啊，你可以去掉试试？~~其实只要把target去掉就基本不会CE了~~
by Styx @ 2018-08-10 14:37:18
找到原因了,,,,,,,空间开小了1读到后开的数组里去了,,再加上第79行```if (ffabs(tab[pos][i]) < ffabs(tab[j][i])) pos = j;```
写成了
```if (ffabs(tab[pos][i] < ffabs(tab[j][i]))) pos = j;```
不知道咋回事板子和本题苟过了,,,建议加强数据
by ELLIAS @ 2018-08-10 14:47:31