foo.cc: In function 'void solve(char*, char*)':
foo.cc:7:22: error: request for member 'size' in 's', which is of non-class type 'char*'
     for (int i=0;i<s.size();i++){
                      ^~~~
foo.cc:22:1: error: a function-definition is not allowed here before '{' token
 {
 ^
foo.cc:28:1: error: expected '}' at end of input
 }
 ^

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