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  1. #include <bits/stdc++.h>
  2. using namespace std;
  3. #define int long long
  4. signed main()
  5. {
  6.     int t;
  7.     string s;
  8.     cin>>t;
  9.     while(t--)
  10.     {
  11.         cin>>s;
  12.         int one=0,zero=0;
  13.         one=count(s.begin(),s.end(),'1');
  14.         zero=count(s.begin(),s.end(),'0');
  15.         if(zero!=one)
  16.             cout<<min(zero,one);
  17.         else
  18.             cout<<one-1;// zero
  19.         cout<<endl;
  20.     }
  21. }
Success #stdin #stdout 0.01s 5300KB
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Standard input is empty
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-1
-1
https://ideone.com/3QxGgl
language:
C++14 (gcc 8.3)
created:
2 days ago
visibility:
public

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