请使用更快的输入方式
by rsrsr @ 2022-12-23 21:21:30
@[DAE_Goose](/user/741120) 1e7就不要用cin了吧
by SJH_qwq @ 2022-12-23 21:25:49
@[songjiahao_](/user/761125) 其实不影响，这样也AC：
```
/***********************************
.-'''''-.
.' `.
: :
: :
: _/| :
: =/'/ :
`._/ | .'
( / ,|...-'
\_/^\/||__
_/~ `""~`"` \_
__/ -'/ `-._ `\ _\__
/ /-'` `\ \ \-.\
*************************************/
#include<bits/stdc++.h>
using namespace std;
typedef long long ll ;
typedef int ii ;
typedef char cc ;
typedef double dd ;
typedef bool bb ;
int main() {
int nabcd;
cin >> nabcd;
long long total = 0;
long long score = 0;
long long losta = 0;
cin >> n;
int tabcd = 0;
for(int iabcd = 1;iabcd <= nabcd;iabcd++){
cin >> tabcd;
total += t;
}
for(int iabcd = 1;iabcd <= nabcd;iabcd++){
cin >> tabcd;
score += t;
}
losta = total - score;
total *= 3
score *= 2;
cout << fixed << setprecision(6) << (total - score) / losta;
return 0;
}
```
by _O__o_ @ 2022-12-23 21:29:44
@[DAE_Goose](/user/741120) 啊这
by SJH_qwq @ 2022-12-23 21:32:38