Compilare: user.cpp: In function ‘void solve()’: user.cpp:96:9: warning: unused variable ‘c1’ [-Wunused-variable] int c1, c2; ^ user.cpp:96:13: warning: unused variable ‘c2’ [-Wunused-variable] int c1, c2; ^ user.cpp:97:9: warning: unused variable ‘x1’ [-Wunused-variable] int x1, x2, y1, y2; ^ user.cpp:97:13: warning: unused variable ‘x2’ [-Wunused-variable] int x1, x2, y1, y2; ^ user.cpp:97:17: warning: unused variable ‘y1’ [-Wunused-variable] int x1, x2, y1, y2; ^ user.cpp:97:21: warning: unused variable ‘y2’ [-Wunused-variable] int x1, x2, y1, y2; ^