Submission #337060

#	Time	Username	Problem	Language	Result	Execution time	Memory
337060		kutbilim_one	Odd-even (IZhO11_oddeven)	C++14	0 / 100	1 ms	512 KiB

oddeven

/** @kutbilimone **/
#include <bits/stdc++.h>

using namespace std;

#define endl '\n'
#define all(x) x.begin(),x.end()
#define int long long

signed main(){
	ios_base::sync_with_stdio(false);
	cin.tie(nullptr);

	int n;
	cin >> n;
	cout << 2*n - floor( (1+ sqrt(8*n-7))/2 );

	return 0;
}

• Subtask 1: 0 / 100