Cod sursa(job #1760159)
Utilizator | Data | 20 septembrie 2016 13:48:43 | |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.46 kb |
#include<fstream>
#include<algorithm>
using namespace std;
ifstream fin("sum.in");
ofstream fout("sum.out");
int a[200002];
long long s[1000001];
int main()
{
int n,m=0,i,j,x,h;
fin>>x;
for(h=1;h<=x;h++){
fin>>n;
for(i=1;i<=2*n;i++)
s[h]+=i;
for(i=2;i<=n;i++)
if(!a[i])
{if(n%i==0)
for(j=i+i;j<=2*n;j+=i)
a[j]=1;
}
for(i=2;i<=2*n;i++)
if(a[i])
s[h]-=i;
s[h]=s[h]-5;}
for(h=1;h<=x;h++)
fout<<s[h]<<'\n';
}