View Compilation Error

0_0_17729555_5939.cpp: In function 'int main()':
0_0_17729555_5939.cpp:81:19: error: 'x' was not declared in this scope
    scanf("%d%d", &x, &y);
                   ^
0_0_17729555_5939.cpp:81:23: error: 'y' was not declared in this scope
    scanf("%d%d", &x, &y);
                       ^