Compilare: user.cpp: In function ‘int main()’: user.cpp:55:30: warning: variable ‘x1’ set but not used [-Wunused-but-set-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:34: warning: variable ‘x2’ set but not used [-Wunused-but-set-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:38: warning: variable ‘y1’ set but not used [-Wunused-but-set-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:42: warning: variable ‘y2’ set but not used [-Wunused-but-set-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:46: warning: unused variable ‘fx1’ [-Wunused-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:51: warning: unused variable ‘fx2’ [-Wunused-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:56: warning: unused variable ‘fy1’ [-Wunused-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^ user.cpp:55:61: warning: unused variable ‘fy2’ [-Wunused-variable] int n, m, q, i, j, k, l, x1, x2, y1, y2, fx1, fx2, fy1, fy2; ^