Compilare: user.cpp: In function ‘void solve1()’: user.cpp:76:7: warning: variable ‘xf’ set but not used [-Wunused-but-set-variable] int xf = 0, yf = 0, lg = 0; ^ user.cpp:76:15: warning: variable ‘yf’ set but not used [-Wunused-but-set-variable] int xf = 0, yf = 0, lg = 0; ^ user.cpp:76:23: warning: variable ‘lg’ set but not used [-Wunused-but-set-variable] int xf = 0, yf = 0, lg = 0; ^