문자열 문제
#include <iostream>
#include <string>
using namespace std;
int answer = 0;
void isCount(string word) {
int alpha[26] = { 0 };
char tmp='0'; //이전 문자 저장
for (int i = 0; i < word.length(); i++) {
if (word[i] != tmp)
alpha[word[i] - 'a']++;
tmp = word[i];
}
for (int i = 0; i < 26; i++) {
if (alpha[i] > 1) return;
}
answer++;
}
int main() {
int testN; string word;
cin >> testN;
for (int i = 0; i < testN; i++) {
cin >> word;
isCount(word);
}
cout << answer;
}