public class 끄적끄적for {
public static void main(String[] args) {
int answer = 0;
for(int i = 0; i <= 55; i ++){
answer += i;
}
System.out.println(answer);
int result = 0;
for(int n = 1; n <= 100; n = n + 2){
result = result + n;
}
System.out.println(result);
}