Compilare: main.cpp: In function 'void dfs(int)': main.cpp:29:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<ve[nod].size();t++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'void cdfs(int)': main.cpp:40:18: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int t=0;t<ve[nod].size();t++) ~^~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:63:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<buc[i].size();k++) ~^~~~~~~~~~~~~~ main.cpp:67:30: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int g=0;g<buc[j].size();g++) ~^~~~~~~~~~~~~~ main.cpp:51:33: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d%d",&c,&n,&m); ^ main.cpp:54:42: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%d",&v[i].a,&v[i].b); ^