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- #include <iostream>
- using namespace std;
- long long n,ilem=1;
- int main()
- {
- cin >> n;
- long long t[n];
- cin>>t[0]>>t[1];
- for(int i=2;i<n;i++)
- {
- cin >>t[i];
- if((t[i-2]>=t[i-1])&&(t[i-1]<t[i]) || (t[i-2]<=t[i-1])&&(t[i-1]>t[i]) )
- ilem++;
- }
- cout<<ilem;
- return 0;
- }
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