注：本机30w极限数据跑1.5s
by GoldenPotato137 @ 2019-01-20 10:44:18
这代码也~~太长了~~~~太复杂~~emmm我也不知道
咋办
by _Rainlzy @ 2019-01-20 10:51:08
~~不是妹子不管你~~
不会不会
by 夜刀神十香ღ @ 2019-01-20 10:51:35
@[剑尘纷飞](/space/show?uid=166307) emmmm，还是多谢回复了qwq
by GoldenPotato137 @ 2019-01-20 10:55:34
@[夜刀神十香ღ](/space/show?uid=41785) w
by GoldenPotato137 @ 2019-01-20 10:57:31
@[GoldenPotato137](/space/show?uid=52563) qwqwq
by 夜刀神十香ღ @ 2019-01-20 11:19:57
@[GoldenPotato137](/space/show?uid=52563) 不要用STL的```complex```啊，慢的一批
by hl666 @ 2019-01-20 11:33:11
@[GoldenPotato137](/space/show?uid=52563) STL的complex很慢的，手写吧。实在不行您可以去我的主页里找40行卡常代码
by p_b_p_b @ 2019-01-20 11:47:33
@[p_b_p_b](/space/show?uid=76481) @[hl666](/space/show?uid=41698)
多谢两位dalao的回复
那个......手写complex我试过了，但是好像跑得STL更慢了，能帮忙看看吗？
```cpp
struct cp
{
double x,y;
cp (double a=0,double b=0)
{
x=a,y=b;
}
friend cp operator + (cp a,cp b)
{
return cp(a.x+b.x,a.y+b.y);
}
friend cp operator - (cp a,cp b)
{
return cp(a.x-b.x,a.y-b.y);
}
friend cp operator * (cp a,cp b)
{
return cp(a.x*b.x-a.y*b.y,a.x*b.y+a.y*b.x);
}
void conj()
{
y=-y;
}
};
```
by GoldenPotato137 @ 2019-01-20 12:22:07
@[GoldenPotato137](/space/show?uid=52563) emmm……
还有最后一种方法：
```cpp
#pragma GCC optimize(2)
#pragma GCC optimize(3)
#pragma GCC optimize("Ofast")
#pragma GCC optimize("inline")
#pragma GCC optimize("-fgcse")
#pragma GCC optimize("-fgcse-lm")
#pragma GCC optimize("-fipa-sra")
#pragma GCC optimize("-ftree-pre")
#pragma GCC optimize("-ftree-vrp")
#pragma GCC optimize("-fpeephole2")
#pragma GCC optimize("-ffast-math")
#pragma GCC optimize("-fsched-spec")
#pragma GCC optimize("unroll-loops")
#pragma GCC optimize("-falign-jumps")
#pragma GCC optimize("-falign-loops")
#pragma GCC optimize("-falign-labels")
#pragma GCC optimize("-fdevirtualize")
#pragma GCC optimize("-fcaller-saves")
#pragma GCC optimize("-fcrossjumping")
#pragma GCC optimize("-fthread-jumps")
#pragma GCC optimize("-funroll-loops")
#pragma GCC optimize("-fwhole-program")
#pragma GCC optimize("-freorder-blocks")
#pragma GCC optimize("-fschedule-insns")
#pragma GCC optimize("inline-functions")
#pragma GCC optimize("-ftree-tail-merge")
#pragma GCC optimize("-fschedule-insns2")
#pragma GCC optimize("-fstrict-aliasing")
#pragma GCC optimize("-fstrict-overflow")
#pragma GCC optimize("-falign-functions")
#pragma GCC optimize("-fcse-skip-blocks")
#pragma GCC optimize("-fcse-follow-jumps")
#pragma GCC optimize("-fsched-interblock")
#pragma GCC optimize("-fpartial-inlining")
#pragma GCC optimize("no-stack-protector")
#pragma GCC optimize("-freorder-functions")
#pragma GCC optimize("-findirect-inlining")
#pragma GCC optimize("-frerun-cse-after-loop")
#pragma GCC optimize("inline-small-functions")
#pragma GCC optimize("-finline-small-functions")
#pragma GCC optimize("-ftree-switch-conversion")
#pragma GCC optimize("-foptimize-sibling-calls")
#pragma GCC optimize("-fexpensive-optimizations")
#pragma GCC optimize("-funsafe-loop-optimizations")
#pragma GCC optimize("inline-functions-called-once")
#pragma GCC optimize("-fdelete-null-pointer-checks")
```
by p_b_p_b @ 2019-01-20 13:20:53