View Compilation Error

0_0_37291097_13310.cpp: In function 'bool dfs(int&, std::string&, std::string&)':
0_0_37291097_13310.cpp:20:28: error: conflicting declaration 'int valid'
       int sz = cur.size(), valid = 1;
                            ^
0_0_37291097_13310.cpp:19:12: note: previous declaration as 'bool valid'
       bool valid = true;
            ^