Compilare: user.cpp: In function ‘int main()’: user.cpp:99:13: warning: unused variable ‘x1’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:22: warning: unused variable ‘y1’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:31: warning: unused variable ‘x2’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:40: warning: unused variable ‘y2’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:49: warning: unused variable ‘x3’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:59: warning: unused variable ‘y3’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:69: warning: unused variable ‘x4’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:99:79: warning: unused variable ‘y4’ [-Wunused-variable] int x1 = oo, y1 = oo, x2 = oo, y2 = oo, x3 = -oo, y3 = -oo, x4 = -oo, y4 = -oo; ^ user.cpp:97:84: warning: ‘res’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << res << '\n' << min((int)res_c, (res + 1 <= pos) ? (value[Sorted[res + 1]]) : (oo)) << '\n'; ^ user.cpp:97:97: warning: ‘res_c’ may be used uninitialized in this function [-Wmaybe-uninitialized] out << res << '\n' << min((int)res_c, (res + 1 <= pos) ? (value[Sorted[res + 1]]) : (oo)) << '\n'; ^