99999873654as7829 @ 2023-10-18 09:51:13
求求大佬相助```cpp #include<iostream> using namespace std; int jc(long long a){ if (a==1){ return 1; } return a*jc(a-1); } int jc2(long long a){ long long s=0; for (int i=1;i<=a;i++){ s+=jc(i); } return s; } int main(){ long a; cin>>a; long long b=jc2(a); cout<<b; }
by hytallenxu @ 2023-10-18 10:07:42
这题高精度，会爆long long
by 99999873654as7829 @ 2023-10-18 10:19:24
@hytallenxu 听不懂，详细一点好吗？
by loose @ 2023-10-19 11:09:06
@wuyuhang2012 我也是这么想的，但是50！远远大于计算机能表示的数，这道题需要用到高精度，你可以搜索一下
by 99999873654as7829 @ 2023-10-20 22:20:18
@loose 我用了long long
by xzwdqjdx @ 2023-10-21 09:54:36
可以试一试 long double或者int_128
by 99999873654as7829 @ 2023-10-21 13:09:34
@xzwdqjdx 谢谢
by 99999873654as7829 @ 2023-10-24 22:47:30
发一下代码