/C++/Calculating Function codeforces in c++

Calculating Function codeforces in c++

#include<iostream>
using namespace std;
int main()
{
	long long n, sum;
	cin >> n;
	if (n % 2 == 0)
		sum = (n / 2);
	else
		sum = ((n + 1) / 2) * (-1);
	cout << sum << endl;
	return 0;
}

Source: codeforces.com

Similar codes

0 vote280 views1 answer
Reading package lists... Done Building dependency tree Reading state information... Done mysql-server is already the newest version (5.7.36-0ubuntu0.18.04.1). 0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
C++
0 vote275 views1 answer
C++ getline doesn't wait for input
C++
0 vote273 views1 answer
C++ split string by several space
C++
2 votes327 views2 answers
How to check a number in string
C++
0 vote286 views1 answer
Has substr c++
C++
3 votes297 views1 answer
Vector unique in c++
C++
0 vote256 views1 answer
Copy file to vector c++
C++
0 vote224 views1 answer
Scss variable is not defined
C++
6 votes294 views1 answer
Void value not ignored as it ought to be
C++
0 vote290 views1 answer
Clean list widget qt
C++