自己不管如何改都是NA，可以幫我看哪裡錯誤嗎？

#include <iostream> using namespace std; int main (){     int hh,mm;     while(cin >> hh >> mm){            if ( (hh <=0 || hh > 24) || (mm <0 || mm >60) )break;            else if ( (hh > 7 && hh < 17) ||  (hh = 7 && mm >= 30 ) ){ cout<<"At School"; }            else cout<<"Off School";            cout<<endl;               }             return 0; }

 

#include <iostream>
using namespace std;
int main (){
    int hh,mm;
    while(cin >> hh >> mm){
           if ( (hh <=0 || hh > 24) || (mm <0 || mm >60) )break;
           else if ( (hh > 7 && hh < 17) ||  (hh == 7 && mm >= 30 ) ){ cout<<"At School"; }
           else cout<<"Off School";
           cout<<endl;   
           }   
         return 0;
}

 試試看吧