Compilare: user.cpp: In function ‘int main()’: user.cpp:50:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<d1.size();i++) ^ user.cpp:54:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<d2.size();i++) ^ user.cpp:58:19: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for(i=0;i<d3.size();i++) ^ user.cpp:8:16: warning: unused variable ‘a’ [-Wunused-variable] int nr,n,k,a[30003],i,j,x1,x2,y1,y2; ^ user.cpp:8:27: warning: unused variable ‘j’ [-Wunused-variable] int nr,n,k,a[30003],i,j,x1,x2,y1,y2; ^ user.cpp:13:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&n,&k); ^ user.cpp:22:45: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d%d%d",&x1,&y1,&x2,&y2); ^