Created
July 27, 2016 15:59
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#include<bits/stdc++.h> | |
using namespace std; | |
unsigned long long calc[32]; | |
void compute() | |
{ | |
int i; | |
calc[0]=1; | |
for(i=1;i<=30;i++){ | |
calc[i]=i*calc[i-1]; | |
} | |
} | |
void solve(string s,int n) | |
{ | |
vector<int>v; | |
int i,c[27]={0}; | |
for(i=0;i<n;i++){ | |
if(s[i]<=90)s[i]+=32; | |
c[s[i]-'a']++; | |
} | |
int ans,c1,c2,flag; | |
c1=c2=flag=ans=0; | |
for(i=0;i<27;i++){ | |
if(c[i]%2==0){ | |
ans+=(c[i]/2); | |
if((c[i]/2)>1) | |
v.push_back(c[i]/2); | |
} | |
else{ | |
c2++; | |
} | |
if(c2>1) | |
{ | |
cout<<"-1"<<endl; | |
return; | |
} | |
} | |
unsigned long long sol=calc[ans]; | |
for(i=0;i<v.size();i++) | |
sol/=calc[v[i]]; | |
cout<<sol<<endl; | |
} | |
int main() | |
{ | |
ios_base::sync_with_stdio(false); | |
cin.tie(0); | |
cout.tie(0); | |
long int t; | |
compute(); | |
long long ans; | |
cin>>t; | |
string s; | |
while(t--){ | |
cin>>s; | |
solve(s,s.length()); | |
} | |
return 0; | |
} |
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