Compilare: user.cpp: In function ‘int F(int)’: user.cpp:47:28: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(Comp[ind].size() >= limit) return Comp[ind].size() * (Comp[ind].size() - 1); ^ user.cpp:53:43: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Comp[ind].size(); i++){ ^ user.cpp:65:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(cont == Comp[ind].size()) con += 2; ^ user.cpp: In function ‘int main()’: user.cpp:99:38: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i = 0; i < Comp.size(); i++) ^ user.cpp:78:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d", &t); ^ user.cpp:83:34: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &n, &m); ^ user.cpp:86:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fi,"%d%d", &x, &y); ^ user.cpp:64:26: warning: ‘two’ may be used uninitialized in this function [-Wmaybe-uninitialized] dfs(Comp[ind][two]); ^ user.cpp:52:18: note: ‘two’ was declared here int one, two; ^