View Compilation Error

0_0_37815687_24636.cpp:111:23: error: 'split' function uses 'auto' type specifier without trailing return type
     auto split(int pos){
                       ^
0_0_37815687_24636.cpp:111:23: note: deduced return type only available with -std=c++1y or -std=gnu++1y
0_0_37815687_24636.cpp:133:22: error: 'find' function uses 'auto' type specifier without trailing return type
     auto find(int pos){
                      ^
0_0_37815687_24636.cpp:133:22: note: deduced return type only available with -std=c++1y or -std=gnu++1y