View Compilation Error

0_0_33377135_28472.cpp: In function 'int ok(int, int, int, int)':
0_0_33377135_28472.cpp:127:16: error: 'lcp' was not declared in this scope
   if(lcp(mid, p) >= r-l+1) ed = mid;
                ^
0_0_33377135_28472.cpp:135:16: error: 'lcp' was not declared in this scope
   if(lcp(mid, p) >= r-l+1) st = mid;
                ^
0_0_33377135_28472.cpp: In function 'int sol()':
0_0_33377135_28472.cpp:191:23: error: expected '}' at end of input
  printf("%d\n", ans.x);

                       ^