#include <iostream>
using namespace std;
void main()
{
	int start, finish, suma;
	cout << "vvedit start" << endl;
	cin >> start;
	cout << "vvedit finish" << endl;
	cin >> finish;
	suma = 0;
	for (int i = start; i <= finish; i++)
	{
		if (i % 2 == 1)
			suma = suma + i;
	}
	cout << "suma neparnych chysel diapazonu = " << suma << endl;
}