Submission #1221624

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Source Code Expand

#include<stdio.h>
int main(void){
	int i,N,now=0,ans=0,a,b=-1;//up=2 down=1
	scanf("%d",&N);
	for(i=0;i<N;i++){
		scanf("%d",&a);
		if(now==1&&b<a&&b!=-1){now=0;ans++;b=-1;}
		else if(now==2&&b>a&&b!=-1){now=0;ans++;b=-1;}
		else if(b<a&&b!=-1){now=2;} 
		else if(b>a&&b!=-1){now=1;}
		b=a;
	}
	printf("%d\n",ans+1);
	return 0;
}

Submission Info

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