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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. bool check(string str){
  4.  
  5. 	for(auto c:str){
  6. 		if(c=='?')
  7. 		  return false;
  8. 	}
  9. 	return true;
  10. }
  11. void go(string str,int pos){
  12.  
  13. 	if(check(str)){
  14. 		cout<<str<<endl;
  15. 		return;
  16. 	}
  17. 	if(str[pos]=='1' || str[pos]=='0')
  18. 		go(str,pos+1);
  19. 	else if(str[pos]=='?'){
  20. 		str[pos]='0';
  21. 		go(str,pos+1);
  22. 		str[pos]='1';
  23. 		go(str,pos+1);
  24. 	}
  25. }
  26. int main(){
  27. 	string str="1??0";
  28. 	//cin>>str;
  29. 	go(str,0);
  30. }
Success #stdin #stdout 0s 5444KB
comments (?)
stdin
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1??0
stdout
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1000
1010
1100
1110
https://ideone.com/r5kPmY
language:
C++14 (gcc 8.3)
created:
3 years ago
visibility:
public

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