Cod sursa(job #499415)

Utilizator uhraurhuavasile paul emilian uhraurhua Data 9 noiembrie 2010 19:06:36
Problema Fractii Scor 0
Compilator cpp Status done
Runda Arhiva de probleme Marime 0.32 kb
Raporteaza aceasta sursa 
#include<iostream>
#include<fstream>
using namespace std;
ifstream fin("fractii.in");
ofstream fout("fractii.out");
void fractii(long long n){
	long long i,s=0;
	for(i=2;i<=n/2;i++)
	s=s+((n/i)-1)*(i+1);
	s=s+n-1;
	s=s-(n/2)+1;
	fout<<n*n-s<<endl;
}
int main(){
long long n;
fin>>n;
fractii(n);
return 0;
}