public class OddSum {
public static void main(String[] args) {
long result = 0;
for(int i=1; i<=99; i+=2) {
result += i;
}
System.out.println("result=" + result);
}
}
public class Ttyy {
public static void main(String[] args) {
int num=0;
for(int i=0;i<=100;i++) {
if(i/2==1){
num+=i;
}
}
System.out.println(num);
}
}