Cod sursa(job #2067065)
Utilizator | Data | 15 noiembrie 2017 19:56:35 | |
---|---|---|---|
Problema | Sum | Scor | 25 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.64 kb |
#include<fstream>
using namespace std;
ifstream cin("sum.in");
ofstream cout("sum.out");
int n,x,dx;
char np[2000001];
long long s;
int main()
{
cin>>n;
while(n--)
{
cin>>x; dx=2*x; s=0;
for(int i=1;i<=dx;i++) np[i]=0;
for(int i=2;i*i<=dx;i++)
if(x%i==0)
for(int j=1;j*i<=dx;j++)
np[j*i]=1,np[j*(x/i)]=1;
for(int i=1;i*x<=dx;i++)
np[i*x]=1;
///for(int i=1;i<=dx;i++)
/// cout<<np[i]<<' ';
///cout<<'\n';
for(int i=1;i<=dx;i++)
if(!np[i]) s+=i;
cout<<s<<'\n';
}
}