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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3.  
  4. char A[6];
  5.  
  6. int main()
  7. {
  8. 	scanf("%s", A);
  9. 	int num=1, ans=0;
  10. 	for(int i=strlen(A)-1; i>=0; i--){
  11. 		ans+=num*(A[i]-'0');
  12. 		num*=2;
  13. 	}
  14. 	printf("%d", ans);
  15.     return 0;
  16. }
Success #stdin #stdout 0s 4464KB
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https://ideone.com/BgaiLC
language:
C++14 (gcc 8.3)
created:
4 years ago
visibility:
public

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