Compilare: main.cpp: In function 'void dfs(int)': main.cpp:25:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<muc[k].size();i++){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int citeste()': main.cpp:42:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,fi),poz=0; ^ main.cpp:47:39: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,fi),poz=0; ^ main.cpp: In function 'int main()': main.cpp:58:31: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,DIM,fi),poz=0; ^