#include <iostream.h>
# include <math.h>
void main () {
long i,n,a,b,c,dem1=0,dem2=0,t1=0,t2=0;
cout<<"Nhap vao doan a,b,c : " ; cin>>a>>b>>c;
cout<<"Cac so nguyen to doan a,b: "<<endl;
for(n=a;n<=b;n++){
i=2;
while(n%i!=0&&i<=sqrt(n))i++;
if(i>sqrt(n)){
t1+=n;
dem1++;
cout<<n<<" "; }}
cout<<"\n Co "<<dem1<<" so nguyen to"<<endl;
cout<<"Tong doan a,b: "<<t1<<endl;
cout<<"Cac so nguyen doan b,c ;"<<endl;
for(n=b;n<=c;n++){
i=2;
while(n%i!=0&& i<=sqrt(n))i++;
if(i>sqrt(n)) { t2+=n;
dem2++;
cout<<n<<" "; }}
cout<<"\n Co "<<dem2<<" so nguyen to "<<endl;
cout<<"Tong doan b,c : "<<t2<<endl;
if(dem1<dem2)cout<<"Doan 2 co nhieu so nguyen to hon ! "<<endl; else
if(dem1>dem2)cout<<"Doan 1 co nhieu so nguyen to hon
!"<<endl;
else cout<<"2 doan co so nguyen to bang nhau !";
}