Cod sursa(job #1045519)
| Utilizator | Data | 1 decembrie 2013 18:10:08 | |
|---|---|---|---|
| Problema | Sum | Scor | 100 |
| Compilator | cpp | Status | done |
| Runda | Arhiva de probleme | Marime | 0.49 kb |
#include <cstdio>
using namespace std;
int v[100010];
inline void EulerIndicator()
{
int i,j;
for(i=1;i<=100005;++i)
v[i]=i-1;
for(i=2;i<=50005;++i)
for(j=i*2;j<=100005;j+=i)
v[j]-=v[i];
}
int main()
{
int N,X;
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
EulerIndicator();
scanf("%d", &N);
while(N--)
{
scanf("%d", &X);
printf("%lld\n", 2LL*v[X]*X);
}
return 0;
}
