Submission #1220985

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Source Code Expand

#include <cstdio>
#include <cstring>
#include <vector>
#include <queue>
#include <string>
#include <algorithm>
#include <iostream>
#include <string>
#include <map>
#include <set>
#include <functional>
#include <iostream>
#define MOD 1000000007LL
using namespace std;
typedef long long ll;
typedef pair<int,int> P;

int n;
int a[200001];
int main(void){
	scanf("%d",&n);
	for(int i=0;i<n;i++){
		scanf("%d",&a[i]);
	}
	int flag=1;
	int cnt=0;
	for(int i=1;i<n;i++){
		if(a[i]<a[i-1]){
			if(flag==2){
				cnt++;
				flag=1;
			}else flag=0;
		}
		if(a[i]>a[i-1]){
			if(flag==0){
				cnt++;
				flag=1;
			}else flag=2;
		}
	}
	printf("%d\n",cnt+1);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:21:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&n);
                ^
./Main.cpp:23:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&a[i]);
                    ^

Judge Result