#include <iostream>
#include <string>
using namespace std;
string a;
int A,B;
int main()
{
getline(cin,a);
for(int x=0; x<a.length()-2; x++)
{
if(a[x]==':'&&a[x+1]=='-')
{
if(a[x+2]==')') A++;
if(a[x+2]=='(') B++;
}
}
if(A==0&&B==0) cout<<"none";
else if(A==B) cout<<"unsure";
else if(A>B) cout<<"happy";
else cout<<"sad";
}