#define _USE_MATH_DEFINES #pragma region include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include //// //#include // #pragma endregion //#include ///////// #pragma region typedef typedef long long LL; typedef long double LD; typedef unsigned long long ULL; #pragma endregion //typedef ////定数 const int INF = (int)1e9; const LL MOD = (LL)1e9+7; const LL LINF = (LL)4e18+20; const LD PI = acos(-1.0); const double EPS = 1e-9; ///////// using namespace::std; void solve(){ string str; cin >> str; int N = str.size(); LD A = 0; LD B = 0; for(int i=0;i