Cod sursa(job #690309)
Utilizator | Data | 25 februarie 2012 15:28:59 | |
---|---|---|---|
Problema | Sum | Scor | 45 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.44 kb |
#include <fstream>
using namespace std;
#define nmax 200002
int n,x,v[nmax];
int main()
{
ifstream f("sum.in");
ofstream g("sum.out");
f>>n;
for(int i=1;i<=n;i++)
{
f>>x;
long long s=0;
for(int d=2;d<=x;d++)
{
if(x%d==0)
{
for(int j=d;j<=2*x;j=j+d)
if(v[j]!=i)
{
v[j]=i;
s=s+j;
}
}
}
long long p=x*(2*x+1);
g<<p-s<<"\n";
}
}