public class Circle3Quit {
public static void main(String args[]) {
boolean arr[] = new boolean[500];//"a[index] = false;"
//int a[] = new int[500]; If use this one,try "a[index] = 0;"
for (int i=0; i<arr.length; i++) {
arr[i] = true;
//a[i] = i+1;
}

int leftCount = arr.length;
int count = 0; //say 1, 2, 3; means,once meet a people,count ++
int index = 0;

while (leftCount > 1) {
if (arr[index] == true) {
count ++;
if (count == 3) {
count = 0;
arr[index] = false;
leftCount --;
}
}

index ++;
if (index == arr.length) {
index = 0;
}
}

for (int i=0; i<arr.length; i++) {
if (arr[i] == true) {
System.out.println("The left people is the " + (i+1) + "th one.");
}
}

}
}