Cod sursa(job #558047)
Utilizator | Data | 17 martie 2011 01:53:44 | |
---|---|---|---|
Problema | Sum | Scor | 0 |
Compilator | cpp | Status | done |
Runda | Arhiva de probleme | Marime | 0.36 kb |
#include<fstream>
using namespace std;
ifstream fin("sum.in");ofstream fout("sum.out");
long int i,j,s,N,x,l,v[100005],k,m;
int main(){
fin>>N;
for(i=1;i<=N;++i){
fin>>x;
s=(2*x-1)*(2*x)/2;
for(k=2;k<=x;++k){
if(x%k==0){
for(l=k;l<=2*x-1;l+=k){
if(v[l]==0)
s-=v[l];v[l]=1;
}
}
}
fout<<s<<endl;
}
return 0;
}