Compilare: user.cpp: In function ‘void DFS(int, int)’: user.cpp:33:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Graph[node].size();i++) ^ user.cpp: In function ‘int Solve(int)’: user.cpp:61:32: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Comp[c].size();i++) ^ user.cpp:63:46: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int k=0;k<Graph[Comp[c][i]].size();k++) ^ user.cpp:64:40: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int j=0;j<Comp[c].size();j++) ^ user.cpp:71:36: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Comp[c].size();i++) ^ user.cpp: In function ‘int main()’: user.cpp:98:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Comp.size();i++) ^ user.cpp:113:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<Comp.size();i++) ^ user.cpp:92:23: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d",&T); ^ user.cpp:103:33: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d %d",&N,&M); ^ user.cpp:106:37: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(IN,"%d %d",&X,&Y); ^