50分求助，qp #3#4过不了

hanyaxin @ 2022-11-27 20:24:06

#include<iostream>
using namespace std;
int main()
{
    long long n,i,j=1,q,b=0; 
    cin>>n;
    for(q=1;q<=n;q++)
    {
        for(i=1;i<=q;i++) 
            j=j*i;
        b+=j;
        j=1;  
    }
    cout<<b;
    return 0;
}

by InversionShadow @ 2022-11-27 20:24:45

高精度

by RP_INT_MAX @ 2022-11-27 20:36:20

@hanyaxin 你不会没看到这两句话吧。。。

注，《深入浅出基础篇》中使用本题作为例题，但是其数据范围只有 n \le 20，使用书中的代码无法通过本题。

如果希望通过本题，请继续学习第八章高精度的知识。

by RP_INT_MAX @ 2022-11-27 20:36:42

高精度或 Python。

by RP_INT_MAX @ 2022-11-27 20:38:06

当然你也可以打表

by shengyeqi @ 2023-02-20 19:45:31

“打表代码”

#include<iostream>
using namespace std;
string a[60]={"0","1","3","9","33","153","873","5913","46233","409113","4037913","43954713","522956313","6749977113","93928268313","1401602636313","22324392524313","378011820620313","6780385526348313","128425485935180313","2561327494111820313","53652269665821260313","1177652997443428940313","27029669736328405580313","647478071469567844940313","16158688114800553828940313","419450149241406189412940313","11308319599659758350180940313","316196664211373618851684940313","9157958657951075573395300940313","274410818470142134209703780940313","8497249472648064951935266660940313","271628086406341595119153278820940313","8954945705218228090637347680100940313","304187744744822368938255957323620940313","10637335711130967298604907294846820940313","382630662501032184766604355445682020940313","14146383753727377231082583937026584420940313","537169001220328488991089808037100875620940313","20935051082417771847631371547939998232420940313","836850334330315506193242641144055892504420940313","34289376947494122614363304694584807557656420940313","1439295494700374021157505910939096377494040420940313","61854558558074209658512637979453093884758552420940313","2720126133346522977702138448994068984204397080420940313","122342346998826717539665299944651784048588130840420940313","5624964506810915667389970728744906677010239883800420940313","264248206017979096310354325882356886646207872272920420940313","12678163798554051767172643373255731925167694226950680420940313","620960027832821612639424806694551108812720525606160920420940313","31035053229546199656252032972759319953190362094566672920420940313"};
int main()
{
    int n;
    cin>>n;
    cout<<a[n];
}

by hanyaxin @ 2023-02-20 21:26:31

@shengyeqi

666

by shengyeqi @ 2023-02-24 20:08:15

终极打表好吧