Cpp program to check numbers are unique

WAP to input three integer numbers and check whether all numbers are unique or not.

#include<iostream>
using namespace std;
int main()
{
    int a,b,c;
   cout<<"Enter three integers";
   cin>>a>>b>>c;
   if(a==b || b==c || a==c)
   {
     cout<<"Numbers are not unique.";
   }
   else
   {
     cout<<"Unique numbers.";
   }
   return 0;
}

Enter three integers13

14

56

Unique numbers.