23841번 데칼코마니 문제풀이 #include #include using namespace std; void fast_io(void) { ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL); } int main(void) { fast_io(); int n, m; cin >> n >> m; while (n--) { char grim[51]; cin >> grim; for (int i = 0; i < m; i++) { if (isalpha(grim[i])) { grim[m - i - 1] = grim[i]; } } cout