please tell what i need to change .everything look fine to me.
#include
using namespace std;
int main() {
int n;
cin>>n; //size of array
int a[3],i,p;
for(i=0;i<n;i++)
{
cin>>p;
a[p]++;
}
i=0;
while(i!=3)
{
while(a[i]!=0)
{
cout<<i<<endl;
a[i]--;
}
i++;
}
return 0;
}