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#include<bits/stdc++.h> #define M 262150 using namespace std; struct fushu { double r, i; fushu(double r_=0,double i_=0) { r=r_,i=i_; } fushu operator + (const fushu & a) { return...

#include<bits/stdc++.h> #define M 262150 #define eps 1e-7 using namespace std; inline int read() { char c=getchar(); int ret=0; while(c<48||c>57)c=getchar(); while(c>=48&&c&...

#include<bits/stdc++.h> #define MO 998244353 #define M 262155 using namespace std; inline int read() { int ret=0; char c=getchar(); while(c<48||c>57)c=getchar(); while(c>=48&&am...