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Cod sursa(job #277660)
#include<fstream.h>
ifstream f("economie.in");
ofstream g("economie.out");
unsigned int m[1001],n,i,x,k,nr,j,max,min,w;
unsigned int p[50001],t[1001];
int main(){
f>>n;max=0;min=50001;
/* citire+ordonare */
for(i=1;i<=n;i++){
f>>m[i];
p[m[i]]=1;
if(m[i]>max)max=m[i];
if(m[i]<min)min=m[i];}
w=1;
for(i=1;i<=n;i++)
if(p[i]==1){
m[w]=i;
p[i]=2;w++;}
k=n;
nr=0;
for(i=1;i<=n&&k>0;i++)
if(p[m[i]]==2){nr++;
p[m[i]]=1;
t[i]=1;
k--;
for(j=min;j<=max-m[i];j++)
if(j%m[i]==0){
if(p[j]==2)
k--;
p[j]=1;}
else if(p[j]==1){
if(p[j+m[i]]==2)
k--;
p[j+m[i]]=1;}
if(p[max]==2)
if(max%m[i]==0){
k--;
p[max]=1;}
}
g<<nr<<'\n';
for(i=1;i<=n;i++)
if(t[i]==1)
g<<m[i]<<'\n';
return 0;
}