Submission #721745

#	Time	Username	Problem	Language	Result	Execution time	Memory
721745		gagik_2007	Boarding Passes (BOI22_passes)	C++17	0 / 100	1 ms	300 KiB

passes

#include <iostream>
#include <iomanip>
using namespace std;
int main(){	
  int n;	
  cin>>n;
  double S=(n/2)*(n/2-1)+((n+1)/2)*((n+1)/2-1);
	cout<<setprecision(12)<<fixed;
	cout<<S/4.0<<endl;
}

• Subtask 1: 0 / 5
• Subtask 2: 0 / 25
• Subtask 3: 0 / 30
• Subtask 4: 0 / 40