mirror of
https://github.com/Kiritow/OJ-Problems-Source.git
synced 2024-03-22 13:11:29 +08:00
38 lines
674 B
C++
38 lines
674 B
C++
#include<iostream>
|
|
#include<string.h>
|
|
#include<cmath>
|
|
#include<cstring>
|
|
#include<cstdlib>
|
|
#include<algorithm>
|
|
using namespace std;
|
|
__int64 a[30][30];
|
|
int main()
|
|
{
|
|
int i,j;
|
|
int t,n;
|
|
__int64 sum;
|
|
memset(a,0,sizeof(a));
|
|
a[1][1]=1;
|
|
for(i=2;i<26;i++)
|
|
{
|
|
for(j=1;j<=i;j++)
|
|
{
|
|
a[i][j]=a[i-1][j-1]+a[i-1][j]*j;
|
|
}
|
|
}
|
|
while(~scanf("%d",&t))
|
|
{
|
|
while(t--)
|
|
{
|
|
scanf("%d",&n);
|
|
sum=0;
|
|
for(i=1;i<=n;i++)
|
|
{
|
|
sum+=a[n][i];
|
|
}
|
|
printf("%I64d\n",sum);
|
|
}
|
|
}
|
|
return 0;
|
|
}
|