Compilare: main.cpp: In function 'void dfs(Graph*, int, int*)': main.cpp:8:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (int it = 0; it < graph[nod].size(); it++) ~~~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:21:31: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &n, &m); ^ main.cpp:26:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in, "%d%d", &nod1, &nod2); ^