Submission #1693994

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Source Code Expand

#include<bits/stdc++.h>
using namespace std;
const int N=1e5+10;
int n,a[N];
int main()
{
	scanf("%d",&n);
	for (int i=1;i<=n;i++) scanf("%d",&a[i]);
	int ans=1;
	for (int i=2,sig=0;i<=n;i++){
		if (a[i]>a[i-1]) if (sig!=-1) sig=1;else ans++,sig=0;
		if (a[i]<a[i-1]) if (sig!=1) sig=-1;else ans++,sig=0;
	}
	printf("%d\n",ans);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:7:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:8:42: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  for (int i=1;i<=n;i++) scanf("%d",&a[i]);
                                          ^

Judge Result