Cod sursa(job #2240537)
Utilizator | Data | 13 septembrie 2018 17:56:32 | |
---|---|---|---|
Problema | Sum | Scor | 80 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.47 kb |
#include <iostream>
#include <cstdio>
#define t 100010
using namespace std;
int x,v[t];
long n,q;
int main()
{
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
for (int i=1;i<=t;i++) v[i]=i;
for (int i=2;i<=t;i++)
if (v[i]==i)
{for (int j=i;j<=t;j+=i) v[j]=v[j]*(i-1)/i;}
scanf("%ld",&n);
for (q=1;q<=n;q++)
{
scanf("%ld",&x);
printf("%lld\n",2LL*x*v[x]);
}
return 0;
}