Cod sursa(job #1484519)

Utilizator BlaugranasEnal Gemaledin Blaugranas Data 11 septembrie 2015 13:05:37
Problema Sum Scor 100
Compilator c Status done
Runda Arhiva de probleme Marime 0.4 kb
#include<stdio.h>
int v[100001],t,x,i,j;
int main() {
    freopen("sum.in","r",stdin),freopen("sum.out","w",stdout),scanf("%d",&t);
    for(i=1;i<100001;i++)
        v[i]=i;
    for(j=2;j<100001;j+=2)
        v[j]/=2;
    for(i=3;i<100001;i+=2)
    if(v[i]==i)
        for(j=i;j<100001;j+=i)
            v[j]=v[j]/i*(i-1);
    while(t--)
        scanf("%d",&x),printf("%lld\n",1LL*v[x]*x*2);
}