1 #include<stdio.h>
 2 int main(){
 3     int i,n,f[10000];
 4     f[0] = 7;
 5     f[1] = 11;
 6     while(scanf("%d",&n)!=EOF){
 7         for(i=2; i<=n; i++){
 8             f[i] = f[i-1]+f[i-2];
 9         }
10         if(f[n]%3 == 0)
11             printf("yes\n");
12         else printf("no\n");
13     }
14     return 0;
15 }

 1 #include<stdio.h>
 2 int main(){
 3     int n;
 4     while(scanf("%d",&n)!=EOF){
 5         if(n%4==2)
 6             printf("yes\n");
 7         else printf("no\n");
 8     }
 9     return 0;
10 }