baekjoon 1316

https://www.acmicpc.net/problem/1316

Code

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <string.h>

int main(void) {
	char arr[101][101] = { NULL, };
	
	int n;
	int cnt = 0;
	
	scanf("%d", &n);

	for (int i = 0; i < n; i++) {
		scanf("%s", arr[i]);
	}

	for (int i = 0; i < n; i++) {
		int flag = 0;
		int alpha[27] = { 0, };

		for (int j = 0; j < strlen(arr[i]); j++) {
			if (alpha[arr[i][j] - 97] == 0) {
				flag++;
			}
			else if (alpha[arr[i][j] - 97] != 0 && arr[i][j] != arr[i][j - 1]) {
				flag = -1;
				break;
			}
				
			alpha[arr[i][j] - 97]++;
		}

		if (flag > -1) {
			cnt++;
		}
	}

	printf("%d", cnt);
	

	return 0;
}