Submission #885968

#	Time	Username	Problem	Language	Result	Execution time	Memory
885968		karimov	Odd-even (IZhO11_oddeven)	C++17	0 / 100	0 ms	348 KiB

oddeven

#include <bits/stdc++.h>
using namespace std;

void solve() {
	double n;cin>>n;
	int x = ceil((ceil(sqrt(n*8+1))-1)/2);
	if(x%2==1){
		int d = (x+1)/2-1;
		x--;
		cout << (d*d*4+1)+(2*(n-(x*(x+1)/2)-1));
	} else {
		int d = x/2-1;
		x--;
		cout << (d*d*4+4*d+2)+(2*(n-(x*(x+1)/2)-1));
	}                                                                                     
}

int main() {
	solve();
	return 0;
}

• Subtask 1: 0 / 100