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10338.cpp
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10338.cpp
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#include<bits/stdc++.h>
using namespace std;
#define ll long long
ll fact(int a)
{
if(a==0)
return 1;
return a*fact(a-1);
}
int main()
{
int k;
cin>>k;
for(int p=1;p<=k;p++){
string s;
cin>>s;
cout<<"Data set "<<p<<": ";
ll c=fact(s.length());
for(int i=0;i<s.length();i++){
int t=0;
for(int j=0;j<s.length();j++){
if(j<i && s[i]==s[j])
break;
if(s[i]==s[j])
t++;
if(j==s.length()-1){
if(t>1)
c/=fact(t);
}
}
}
cout<<c<<endl;
}
return 0;
}