# include <iostream>
#include <fstream>
#include <string>
#include <vector>
using namespace std;

void smooth( vector<double>const&  input, vector<double>& output, int n, int window)
{
	int i, j, z, k1, k2, hw;
	double tmp;
	if (window%2 == 0) window++;
	hw = (window - 1) / 2;
	output[0] = input[0];

	for (i = 1; i < n; i++) {
		tmp = 0;
		if (i < hw) {//начало массива и нужно изменение окна
			k1 = 0;
			k2 = 2 * i;
			z = k2 + 1;
		}
		else if ((i + hw) > (n - 1)) {//конец массива и необходимость аналогично изменить размер
			k1 = i - n + i + 1;
			k2 = n - 1;
			z = k2 - k1 + 1;
		}
		else {
			k1 = i - hw;
			k2 = i + hw;
			z = window;
		}

		for (j = k1; j <= k2; j++) {
			tmp += input[j];
		}
		output[i] = tmp / z;
	}
}
int main() {
	string inputFile;
	int window;
	cout << "file and window: ";
	cin >> inputFile>>window;
	vector<double>numbers;
	double num;
	ifstream in(inputFile);
	if (in.is_open())
	{
		in.ignore(numeric_limits <streamsize>::max(),'\n');
		while (in >> num)
			numbers.push_back(num);
	}
	in.close();
	for (auto elem : numbers)
		cout << elem << '\n';
	cout << "after smooth\n";
	vector<double>resnumbers(numbers.size());
	smooth(numbers,resnumbers,numbers.size(),window);
	double temp=resnumbers[0];
	ofstream out("afterSmooth.txt");
	out << "Values after Smooth:" << '\n';
	for (auto elem : resnumbers) {
		out << elem<<endl;
		if(elem>=temp)
		cout << elem <<'>'<< '\n';
		else cout << elem << '<' << '\n';
		temp = elem;
	}
	out.close();
	return 0;
}