Submission #1221015

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Source Code Expand

#include <cstdio>

int N;
int main() {
	scanf("%d",&N);
	int sol=1;
	int cur;
	int vec=0;
	scanf("%d",&cur);
	for(int i=1;i<N;i++) {
		int next;
		scanf("%d",&next);
		if(vec==1) {
			if(cur>next) {
				sol++;
				vec=0;
			}
			cur=next;
		} else if(vec==-1) {
			if(cur<next) {
				sol++;
				vec=0;
			}
			cur=next;
		} else {
			if(cur<next) vec=1;
			if(cur>next) vec=-1;
			cur=next;
		}
	}
	printf("%d\n",sol);
	return 0;
}

Submission Info

Compile Error

./Main.cpp: In function ‘int main()’:
./Main.cpp:5:16: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&N);
                ^
./Main.cpp:9:18: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d",&cur);
                  ^
./Main.cpp:12:20: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d",&next);
                    ^

Judge Result