CCF|跳一跳

import java.util.Scanner;

public class Main
{
public static void main (String[] args)
{
Scanner scanner=new Scanner(System.in);
int score=0;
int sum=0;
int n=0;
while((n=scanner.nextInt())!=0)
{

if(n1)
{
score=1;
}
else if(n2&&score%2!=0)
{
score=2;
}
else if(n2&&score%20)
{
score+=2;
}
sum+=score;
}
System.out.println(sum);
}

}