#include <iostream>
using namespace std;
int main(){
int choice=0;
bool isUsed1=false, isUsed2=false;
while (true){
cout << "Choose a number 1 or 2: ";
cin >> choice;
if (choice == 1){
isUsed1 = true;
}
else {
isUsed2 = true;
}
if (isUsed1 == true && isUsed2==true){
break;
}
}
return 0;
}
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