Compilare: user.cpp: In function ‘int solve(unsigned int)’: user.cpp:17:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r==i) v1+=(i-1)*2+1; ^ user.cpp:26:25: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] if (r==i) v2+=(i-1)*2+1; ^ user.cpp:8:12: warning: unused variable ‘l’ [-Wunused-variable] intt i,l,r,mid; v1=0; v2=0; ^ user.cpp:8:14: warning: unused variable ‘r’ [-Wunused-variable] intt i,l,r,mid; v1=0; v2=0; ^ user.cpp:29:1: warning: no return statement in function returning non-void [-Wreturn-type] } ^