Eroare de compilare: main.cpp:3:38: error: 'int index' redeclared as different kind of entity 3 | int n,m,i,j,nrN,nrM,op,x,y,k=0,ctc=0,index=0; | ^~~~~ In file included from /usr/include/string.h:432, from /usr/include/c++/10/cstring:42, from /usr/include/x86_64-linux-gnu/c++/10/bits/stdc++.h:48, from main.cpp:1: /usr/include/strings.h:61:1: note: previous declaration 'const char* index(const char*, int)' 61 | index (const char *__s, int __c) __THROW | ^~~~~ main.cpp: In function 'void df(int)': main.cpp:15:37: error: no post-increment operator for type 15 | lowlink[nod] = inds[nod] = index++; | ^~ Non zero exit status: 1