NOIP 2013 花匠

 1 #include <cstdio>
 2 #include<iostream>
 3 #include<cstdlib>
 4 #include<algorithm>
 5 int s,n,k,i,a,b;
 6 int main() {
 7     while(~scanf("%d%d",&n,&a)) {
 8         for(i=1; i<n; ++i) {
 9             scanf("%d",&b);
10             if(b>a&&k!=1)k=1,s++;
11             if(b<a&&k!=2)k=2,s++;
12             a=b;
13         }
14         printf("%d\n",s+1);
15     }
16 }