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ID题目提交者结果用时内存语言文件大小提交时间测评时间
#127815#1171. Integer Array ShuffleDr_GlitchWA 1ms3592kbC++14939b2023-07-20 09:04:142023-07-20 09:04:15

Judging History

你现在查看的是最新测评结果

  • [2023-08-10 23:21:45]
  • System Update: QOJ starts to keep a history of the judgings of all the submissions.
  • [2023-07-20 09:04:15]
  • 评测
  • 测评结果:WA
  • 用时:1ms
  • 内存:3592kb
  • [2023-07-20 09:04:14]
  • 提交

answer

#include<bits/stdc++.h>
#define init read()
using namespace std;
int n,ans=0;
vector<int>vec;
inline int read()
{
	int mmm=0,ff=1;char xx=getchar();
	while((xx<'0'||xx>'9')&&xx!='-')xx=getchar();
	if(xx=='-')ff=-1,xx=getchar();
	while(xx>='0'&&xx<='9')
	mmm=mmm*10+xx-'0',xx=getchar();
	return mmm*ff;
}
inline void write(int x)
{
	if(x<0)
	{
		putchar('-');
		x=-x;
	}
	if(x>9)write(x/10);
	putchar('0'+x%10);
}
int main()
{
	//freopen("qoj1171.in","r",stdin);
	//freopen("qoj1171.out","w",stdout);
	n=init;
	for(int i=1;i<=n;i++)vec.emplace_back(init);
	if(vec.size()==1u)
	{
		puts("0");
		return 0;
	}
	int last=vec[0];bool up=true;
	for(int i=1;(unsigned)i<vec.size();i++)
	{
		int now=vec[i];
		if(now>=last&&up)
		{
			last=now;
			continue;
		}
		if(now<=last&&!up)
		{
			last=now;
			continue;
		}
		last=now;
		up=!up;ans++;
	}
	write((ans+1)>>1);putchar('\n');
	return 0;
}

詳細信息

Test #1:

score: 100
Accepted
time: 1ms
memory: 3496kb

input:

3
2 2 5

output:

0

result:

ok 1 number(s): "0"

Test #2:

score: 0
Accepted
time: 1ms
memory: 3432kb

input:

6
1 5 8 10 3 2

output:

1

result:

ok 1 number(s): "1"

Test #3:

score: 0
Accepted
time: 1ms
memory: 3416kb

input:

8
14253630 18210471 431833031 681754868 791250850 811241570 837112104 858531105

output:

0

result:

ok 1 number(s): "0"

Test #4:

score: 0
Accepted
time: 1ms
memory: 3388kb

input:

3
2 2 5

output:

0

result:

ok 1 number(s): "0"

Test #5:

score: 0
Accepted
time: 0ms
memory: 3560kb

input:

7
4 2 4 2 5 3 4

output:

3

result:

ok 1 number(s): "3"

Test #6:

score: 0
Accepted
time: 1ms
memory: 3592kb

input:

8
92691902 57877007 167221695 197382747 709013587 643114183 962487887 112336349

output:

3

result:

ok 1 number(s): "3"

Test #7:

score: -100
Wrong Answer
time: 1ms
memory: 3424kb

input:

8
14253630 811241570 18210471 431833031 858531105 837112104 681754868 791250850

output:

2

result:

wrong answer 1st numbers differ - expected: '3', found: '2'