Sanalista

input/code.cpp: In function 'int main()':
input/code.cpp:17:17: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (j = 0; j < w[i].size(); j++) {
               ~~^~~~~~~~~~~~~

#include <iostream>

using namespace std;

typedef long long ll;

ll n, i, j, p, s;
string w[1000];

int main() {
	cin >> n;
	for (; i < n; i++) {
		cin >> w[i];
	}
	for (i = 0; i < n; i++) {
		p = 0;
		for (j = 0; j < w[i].size(); j++) {
			p ^= 1 << (w[i][j] - 'a');
		}
		s += p == 0;
	}
	cout << s << endl;
}

Test 1

Verdict: ACCEPTED

Test 2

Verdict: ACCEPTED

Test 3

Verdict: ACCEPTED