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OJ-Problems-Source/HDOJ/1261_autoAC.cpp
2016-08-13 17:16:08 +08:00

47 lines
866 B
C++

#include<iostream>
#include<cstring>
using namespace std;
int a[500];
void change(int n,int m)
{
int c;
c=0;
for(int j=0;j<500;j++)
{
c=a[j]*n+c;
a[j]=c%10;
c=c/10;
}
c=0;
for(int j=499;j>=0;j--)
{
c=a[j]+c*10;
a[j]=c/m;
c=c%m;
}
return;
}
int main()
{
int n,s,k;
int b[26];
while(cin>>n&&n)
{
s=0;
memset(a,0,sizeof(a));
a[0]=1;
for(int i=0;i<n;i++){
cin>>b[i];
for(int j=1;j<=b[i];j++)
change(s+j,j);
s+=b[i];
}
for(k=499;k>=0;k--)if(a[k]!=0)
break;
for(int i=k;i>=0;i--)
cout<<a[i];
cout<<endl;
}
return 0;
}