Compilare: user.cpp: In function ‘int main()’: user.cpp:14:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d.size()<k) ^ user.cpp:30:33: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if(d.size()>k&&d.front()<=0) {actual-=d.front(); ^ user.cpp:35:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] }if(actual>=sum&&d.size()>=k)sum=actual,b=i,a=incp; ^ user.cpp:9:12: warning: unused variable ‘sfp’ [-Wunused-variable] int incp=1,sfp; ^