Submission #1493336

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Source Code Expand

#include <iostream>
using namespace std;
int n,a[100005],ans=1,dir;
int main(){
	ios::sync_with_stdio(false);
	cin.tie(0);
	cin>>n;
	st=n+1;
	for(int i=1;i<=n;i++){
		cin>>a[i];
		if(st==n+1 && i>1 && a[i]!=a[i-1])st=i;
	}
	dir=(a[st-1]<a[st]);
	for(int i=st+1;i<=n;i++){
		if(a[i-1]==a[i])continue;
		if((a[i-1]<a[i])!=dir){
			ans++;
			while(i<n){
				if(a[i]!=a[i+1]){
					dir=(a[i]<a[i+1]);
					break;
				}
				i++;
			}
		}
	}
	cout<<ans<<endl;
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:8:2: error: ‘st’ was not declared in this scope
  st=n+1;
  ^