View Compilation Error

0_0_13888734_29814.cpp: In function 'void task()':
0_0_13888734_29814.cpp:39:28: error: 'x' was not declared in this scope
             while (ha<=n&&(x[i]&tot)+(y[ha]&tot)<lim) ha++;
                            ^
0_0_13888734_29814.cpp:39:39: error: 'y' was not declared in this scope
             while (ha<=n&&(x[i]&tot)+(y[ha]&tot)<lim) ha++;
                                       ^
0_0_13888734_29814.cpp:40:28: error: 'x' was not declared in this scope
             while (hb<=n&&(x[i]&tot)+(y[hb]&tot)<lim2) hb++;
                            ^
0_0_13888734_29814.cpp:40:39: error: 'y' was not declared in this scope
             while (hb<=n&&(x[i]&tot)+(y[hb]&tot)<lim2) hb++;
                                       ^
0_0_13888734_29814.cpp:41:28: error: 'x' was not declared in this scope
             while (hc<=n&&(x[i]&tot)+(y[hc]&tot)<lim+lim2) hc++;
                            ^
0_0_13888734_29814.cpp:41:39: error: 'y' was not declared in this scope
             while (hc<=n&&(x[i]&tot)+(y[hc]&tot)<lim+lim2) hc++;
                                       ^