PAT :1012 数字分类

#include<iostream>
using namespace std;
int main()
{
	int N = 0;
	int arry[10000] = { 0 };
	int count_A1 = 0,flag=1,count_A2=0,count_A3=0,count_A4=0,count_A5=0;//A2的模式切换标志 ，为0,：相减，为1：相加
	int sum_A2 = 0;
	double sum_A4 = 0;
	int max_A5 = 0;
	cin >> N;
	while (N > 1000 || N < 0)
	{
		cin >> N;
	}
	for (int i = 0; i < N; i++)
	{
		cin >> arry[i];
	}
	//能被5整除的数字中有偶数的和
	for (int i = 0; i < N; i++)
	{
		//A1的判断
		if (((arry[i] % 5) == 0) && ((arry[i] % 2) == 0))
		{
			count_A1 += arry[i];
		}
		//A2的判断
		if ((arry[i] % 5) == 1 && flag)
		{
			sum_A2 += arry[i];
			flag = 0;
			count_A2++;
		}
		else if ((arry[i] % 5) == 1 && !flag)
		{
			sum_A2 -= arry[i];
			flag = 1;
			count_A2++;
		}
		//A3的判断
		if ((arry[i] % 5) == 2)
		{
			count_A3++;
		}
		//A4的判断
		if ((arry[i] % 5) == 3)
		{
			sum_A4 += arry[i];
			count_A4++;
		}
		//A5的判断
		if (arry[i] >= max_A5&&(arry[i]%5)==4)
		{
			max_A5 = arry[i];
			count_A5++;
		}

	}
	//A1的输出
	if (count_A1 == 0)
	{
		cout << 'N';
		cout << " ";
	}
	else
	{
		cout << count_A1 << " ";
	}
	//A2的输出
	if (count_A2 == 0)
	{
		cout << 'N';
		cout << " ";
	}
	else
	{
		cout << sum_A2 << " ";
	}
	//A3的输出
	if (count_A3 == 0)
	{
		cout << 'N';
		cout << " ";
	}
	else
	{
		cout << count_A3 << " ";
	}
	//A4的输出
	if (count_A4 == 0)
	{
		cout << 'N';
		cout << " ";
	}
	else
	{
		double avg = 0;
		avg = sum_A4 / count_A4;
		avg = (int)(avg * 10 + 0.5) * 0.1;
		cout << avg << " ";
	}

//A5的输出
	if (count_A5 == 0)
	{
		cout<< 'N';
	}
	else
	{
		cout<< max_A5;
	}
	return 0;
}