Cod sursa(job #1171102)
| Utilizator | Data | 15 aprilie 2014 09:51:46 | |
|---|---|---|---|
| Problema | Sum | Scor | 85 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.56 kb |
#include <iostream>
#include <fstream>
#define inFile "sum.in"
#define outFile "sum.out"
using namespace std;
int main()
{
int i;
long long apar[100001],x,j,k,n;
ifstream fin(inFile);
fin>>n;
ofstream fout(outFile);
for(i=1;i<=100000;i++)
apar[i]=2*i;
for(i=2;i<=100000;i++)
if(apar[i]==i*2)
for(j=i;j<=100000;j+=i)
apar[j]=apar[j]/i*(i-1);
for(k=1;k<=n;k++)
{
fin>>x;
fout<<(long long)apar[x]*x<<"\n";
}
fin.close();
fout.close();
}
