Submission #6811374

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
map<string,int> se;
int n;
string s;
long long cnt=0;
int main() {
	ios::sync_with_stdio(false);
	cin>>n;
	for(int i=1;i<=n;i++) {
		cin>>s;
		sort(s.begin(),s.end());
		cnt+=se[s];
		se[s]++;
	}
	cout<<cnt;
	return 0;
}

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