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#include <iostream>
#include <fstream>
using namespace std;
int n, v[100];
void citire()
{
ifstream f("nunta.in");
f>>n;
for(int i=1; i<=n; i++)
f>>v[i];
f.close();
}
/*void backtracking(int k)
{
for(int i=1; i<=n; i++){
st[k]=i;
if(valid(k)){
if(k==n){
tipar(1);
nrsol++;
}
else
backtracking(k+1);
}
}
}*/
int pct_a()
{
int ct;
for(int i=2; i<n; i++){
if(v[i-1]<v[i])
ct++;
if(v[i+1]<v[i])
ct++;
}
if(v[1]<v[2])
ct++;
if(v[n]<v[n-1])
ct++;
return ct;
}
int main()
{
ofstream g("nunta.out");
int a;
a=pct_a();
g<<a;
g.close();
return 0;
}