View Compilation Error

0_0_17935960_21119.cpp: In function 'int main()':
0_0_17935960_21119.cpp:78:26: error: 'x' was not declared in this scope
             if(poi[i].x==x&&poi[i].y==y) flag=true;
                          ^
0_0_17935960_21119.cpp:78:39: error: 'y' was not declared in this scope
             if(poi[i].x==x&&poi[i].y==y) flag=true;
                                       ^