View Compilation Error

0_0_21381679_3858.cpp: In function 'void work()':
0_0_21381679_3858.cpp:42:21: error: 'len' was not declared in this scope
         L = max(L , len);
                     ^
0_0_21381679_3858.cpp: At global scope:
0_0_21381679_3858.cpp:44:5: error: expected unqualified-id before 'for'
     for (int i = 0 ; i < 26 ; ++ i) {
     ^
0_0_21381679_3858.cpp:44:22: error: 'i' does not name a type
     for (int i = 0 ; i < 26 ; ++ i) {
                      ^
0_0_21381679_3858.cpp:44:31: error: expected unqualified-id before '++' token
     for (int i = 0 ; i < 26 ; ++ i) {
                               ^