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Cod sursa(job #391475)
#include<fstream>
#include<algorithm>
using namespace std;
int v[36005];
char a[36005][20];
int n;
int f(int i,int j)
{
return strcmp(a[i],a[j])<0;
}
int main()
{
ifstream fin("restante.in");
ofstream fout("restante.out");
fin>>n;
int i;
for(i=1;i<=n;i++)
{
fin>>a[i];
sort(a[i],a[i]+strlen(a[i]));
v[i]=i;
}
sort(v+1,v+n+1,f);
int j=1;
int rez=0;
// for(i=1;i<=n;i++)
// fout<<a[i];
for(i=1;i<=n;i++)
{
j=i+1;
// fout<<v[i];
while(strcmp(a[v[i]],a[v[j]])==0)
j++;
if(j-i==1)
rez++;
i=j-1;
}
//fout<<endl;
fout<<rez;
return 0;
}