Compilare: main.cpp: In function 'int bfs()': main.cpp:34:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for ( i=0 ; i<v[nod].size() ; i++ ){ ~^~~~~~~~~~~~~~ main.cpp: In function 'int dfs(int, int)': main.cpp:52:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (;start[nod] < v[nod].size() ; start[nod]++){ ~~~~~~~~~~~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:97:30: warning: ignoring return value of 'size_t fread(void*, size_t, size_t, FILE*)', declared with attribute warn_unused_result [-Wunused-result] fread(buff,1,5005010,fin); ^