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Cod sursa(job #741627)
#include<iostream>
#include<fstream>
#include<string.h>
#include<algorithm>
using namespace std;
string c[36002];
int main ()
{
int n,i,nr;
ifstream f("restante.in");
ofstream g("restante.out");
f>>n;
for(i=1;i<=n;i++) {
f>>c[i];
sort(c[i].begin(),c[i].end());
}
f.close();
sort(c+1,c+n+1);
nr=0;
for(i=1;i<=n;i++)
if((c[i]!=c[i-1])&&(c[i]!=c[i+1]))
nr++;
g<<nr;
g.close();
return 0;
}