Compilare: main.cpp: In function 'bool DFS(int)': main.cpp:43:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();++i) ~^~~~~~~~~~~~~~~~~~~ main.cpp:61:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();++i) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'void Support(int)': main.cpp:87:15: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ~^~~~~~~~~~~~~~~~~~~ main.cpp: In function 'int main()': main.cpp:115:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d%d ",&Asize,&Bsize); ^ main.cpp:119:28: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%s ",Mat[i]+1); ^