Cod sursa(job #2245716)
Utilizator | Data | 25 septembrie 2018 19:20:25 | |
---|---|---|---|
Problema | Sum | Scor | 70 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.47 kb |
#include <iostream>
#include<fstream>
#define Nmax 100000
#define Mmax 50000
using namespace std;
ifstream f("sum.in");
ofstream g("sum.out");
int sol[100001];
int main()
{
for(int i=2;i<=Nmax;i++)
sol[i]=i-1;
for(int i=2;i<=Mmax;i++)
for(int j=2*i;j<=Nmax;j+=i)
sol[j]-=sol[i];
int N, X;
f>>N;
for(int i=1;i<=N;i++)
{
f>>X;
long long rez=2*X*sol[X];
g<<rez<<'\n';
}
return 0;
}