CCF 201803-1 跳一跳 

 1 #include <iostream>
 2 //#include <bits/stdc++.h>
 3 #include <string>
 4 
 5 using namespace std;
 6 
 7 int main()
 8 {
 9     int number;
10     int sum=0;
11     int base=2;
12     bool flag=false;
13     while(cin>>number)
14     {
15         if(number==0)
16         {
17             cout<<sum;
18             return 0;
19         }
20         else if(number==1)
21         {
22             sum++;
23             flag=false;
24             base=2;
25         }
26         else if(number==2)
27         {
28             flag=true;
29             sum+=base;
30             if(flag==true)
31                 base+=2;
32         }
33     }
34     cout<<sum;
35     return 0;
36 }

 

posted @ 2021-01-05 16:12  -Asurada-  阅读(120)  评论(0)  编辑  收藏  举报