View Compilation Error

0_0_36839890_23858.cpp:7:28: error: expected identifier before ')' token
 string& deletess(string& s,) {
                            ^
0_0_36839890_23858.cpp: In function 'void ans()':
0_0_36839890_23858.cpp:30:22: error: too few arguments to function 'std::string& deletess(std::string&, int)'
  else if (deletess(a1) == deletess(a2))
                      ^
0_0_36839890_23858.cpp:7:9: note: declared here
 string& deletess(string& s,) {
         ^
0_0_36839890_23858.cpp:30:38: error: too few arguments to function 'std::string& deletess(std::string&, int)'
  else if (deletess(a1) == deletess(a2))
                                      ^
0_0_36839890_23858.cpp:7:9: note: declared here
 string& deletess(string& s,) {
         ^