시간 제한 : 0.2초메모리 제한 : 512MB 입력Your program is to read from standard input. The input consists of a single line that contains an integer, n (1 ≤ n ≤ 1,000,000,000) 출력Your program is to write to standard output. Print exactly one line. If the given number n is a happy number, print out HAPPY; otherwise, print out UNHAPPY. 소스코드 #include #include using namespace std; int main(void) { int n, m; set s;..