Cod sursa(job #2530249)
Utilizator | Radu Alexandru alexradu04 | Data | 24 ianuarie 2020 16:12:01 |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.57 kb |
#include <bits/stdc++.h>
#define int long long
using namespace std;
int v[100005];
int main()
{
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
int n;
scanf("%lld",&n);
for(int i=2;i<100000;++i)
v[i]=i;
for(int i=2;i<100000;++i)
{
if(v[i]==i)
{
for(int j=i;j<100000;j+=i)
{
v[j]=v[j]/i*(i-1);
}
}
}
for(int i=1;i<=n;++i)
{
int x;
scanf("%lld",&x);
printf("%lld\n",v[x]*2*x);
}
return 0;
}