Compilare: main.cpp: In function 'int main()': main.cpp:67:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(int i=0;i<muc.size()-k;i++) ~^~~~~~~~~~~~~ main.cpp:54:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&n,&k); ^ main.cpp:57:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(fin,"%d%d",&x,&y); ^