Cod sursa(job #2268017)
Utilizator | Data | 24 octombrie 2018 14:15:36 | |
---|---|---|---|
Problema | Sum | Scor | 10 |
Compilator | cpp-64 | Status | done |
Runda | Arhiva de probleme | Marime | 0.45 kb |
#include <fstream>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
int main()
{
int n,vm,e[100001],a,t;
in>>n;
vm=100000;
for(t=1;t<=n;t++)
{
in>>a;
for(int i=2;i<=vm;i++)
e[i]=i;
for(int i=2;i<=vm;i++){
if(e[i]==i){
for(int j=i;j<=vm;j+=i){
e[j]=e[j]/i*(i-1);
}
}
}
out<<e[a]*2*a<<endl;
}
return 0;
}