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  1. #include <bits/stdc++.h>
  2. #define M 1000000007
  3. typedef long long ll;
  4. using namespace std;
  5.  
  6. int main()
  7. {
  8. 	ll twoPow[100002];
  9. 	twoPow[0] = 1; twoPow[1] = 2;
  10. 	for(int i=2;i<100002;i++)
  11. 		twoPow[i] = (twoPow[i-1]*2)%M;
  12.  
  13. 	int tc;
  14. 	cin>>tc;
  15. 	while(tc--)
  16.   	{
  17.   		string str;
  18. 		cin>>str;
  19.  
  20. 		ll ans = 0 , len = str.length()-2;
  21.  
  22. 		for(int i=len;i>=0;i--)
  23. 		{
  24. 			if(str[i]-'0')
  25.       			ans = (ans + twoPow[len-i])%M;
  26.       	}
  27. 		if(ans==0) ans++;
  28. 		cout<<ans<<endl;		
  29.     }
  30.   	return 0;
  31. }
Runtime error #stdin #stdout 0.02s 3404KB
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https://ideone.com/yYvKZG
language:
C++ 4.3.2 (gcc-4.3.2)
created:
7 years ago
visibility:
public

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