Eroare de compilare: user.cpp:14:37: error: ‘int index’ redeclared as different kind of symbol int lowidx[NN],in_stack[NN],idx[NN],index,n,m,i,j; ^ In file included from /usr/include/c++/4.8/cstring:42:0, from user.cpp:5: /usr/include/string.h:482:1: error: previous declaration of ‘const char* index(const char*, int)’ index (__const char *__s, int __c) __THROW ^ user.cpp: In function ‘void tarjan(int)’: user.cpp:21:11: error: no post-increment operator for type index ++; ^ user.cpp:22:28: error: cannot resolve overloaded function ‘index’ based on conversion to type ‘int’ lowidx[nod] = idx[nod] = index; ^ user.cpp:26:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < v[nod].size(); i ++) ^ user.cpp: In function ‘int main()’: user.cpp:72:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i = 0; i < solutii.size(); i ++, fout << '\n') ^ user.cpp:73:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(j = 0; j < solutii[i].size(); j ++) ^