Eroare de compilare: main.cpp:12:60: error: 'int index' redeclared as different kind of symbol int n,m,x,y,viz[NMAX],st[NMAX],nr,nrctc,ll[NMAX],idx[NMAX],index; ^~~~~ In file included from /usr/include/c++/6/cstring:42:0, from /usr/include/x86_64-linux-gnu/c++/6/bits/stdc++.h:48, from main.cpp:1: /usr/include/string.h:477:1: note: previous declaration 'const char* index(const char*, int)' index (const char *__s, int __c) __THROW ^~~~~ main.cpp: In function 'void df(int)': main.cpp:17:20: error: no pre-increment operator for type idx[k]=ll[k]=++index; ^~~~~ main.cpp:19:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i=0;i<v[k].size();++i) { ~^~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (j=0;j<sol[i].size();j++) ~^~~~~~~~~~~~~~ main.cpp:40:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&m); ^ main.cpp:42:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&x,&y); ^ Non zero exit status: 1