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Cod sursa(job #465969)
#include<stdio.h>
int v[1000010];
long long N,S;
int main()
{
freopen("sum.in","r",stdin);
freopen("sum.out","w",stdout);
scanf("%lld",&N);
for(int i=2;i<=101010;++i)
{
if(v[i]==0)
{
v[i]=i-1;
for(int j=i*2;j<=101010;j=j+i)
{
if(v[j]==0)
v[j]=j-(j/i);
else
v[j]=v[j]-(v[j]/i);
}
}
}
S=1;
int x;
for(int i=1;i<=N;++i)
{
scanf("%d",&x);
printf("%d\n",v[x]*x*2);
}
printf("%lld",S);
return 0;
}