문제
풀이
#include <stdio.h>
int main(void) {
int n, i, success = 0;
int alpha[27] = { 0 };
char name[31];
scanf("%d", &n);
for (i=0; i<n; i++) {
scanf("%s", name);
alpha[name[0]-'a']++;
}
for (i=0; i<26; i++) {
if (alpha[i] >= 5) {
printf("%c", i+'a');
success = 1;
}
}
if (success == 0) printf("PREDAJA");
return 0;
}