Răspuns:
Explicație:
#include <iostream>
using namespace std;
int main()
{
int a,b,c,s1=0,s2=0,s3=0,i;
cin>>a>>b>>c;
for (i=a; i<=b; i++){
s1=s1+i;
}
for (i=b; i<=c; i++){
s2=s2+i;
}
for (i=a; i<=c; i++){
s3=s3+i;
}
cout<<s1<<endl;
cout<<s2<<endl;
cout<<s3;
return 0;
}