View Compilation Error

0_0_24885032_4453.cpp:5:16: error: 'Len' does not name a type
 bool cmp(const Len &x, const Len &y) {
                ^
0_0_24885032_4453.cpp:5:30: error: 'Len' does not name a type
 bool cmp(const Len &x, const Len &y) {
                              ^
0_0_24885032_4453.cpp: In function 'bool cmp(const int&, const int&)':
0_0_24885032_4453.cpp:6:12: error: request for member 'c' in 'x', which is of non-class type 'const int'
   return x.c < y.c;
            ^
0_0_24885032_4453.cpp:6:18: error: request for member 'c' in 'y', which is of non-class type 'const int'
   return x.c < y.c;
                  ^