Submission #6833935

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Source Code Expand

#include <iostream>
#include <string>
#include <algorithm>
using namespace std;

int main()
{
  int n;
  cin>>n;
  string str[n];
  for(int i=0;i<n;i++)
  {
    cin>>str[i];
    
    sort(str[i].begin(),str[i].end());
  }
  sort(str,str+n);
  long long count=0;
  for(int i=0;i<n-1;i++)
  {
  	int k=1;
 
    while((str[i].compare(str[i+1])==0)&&i<n-1)
    {
    	i++;
    	k++;
    }
    count+=((k-1)*(k))/2;
    
  }
  cout<<count;
  return 0;
}

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Judge Result