Cod sursa(job #2254016)
Utilizator | Data | 4 octombrie 2018 18:21:18 | |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.55 kb |
#include <bits/stdc++.h>
using namespace std;
ifstream in("sum.in");
ofstream out("sum.out");
int v[100005];
void ciur()
{
for(int i = 1; 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);
}
}
}
int main()
{
int n;
in >> n;
for(int i = 1; i <= n; i ++)
{
int a;
in >> a;
out << 1LL * a * v[a] * 2;
}
return 0;
}