View Compilation Error

0_0_16840441_3362.cpp: In function 'int main()':
0_0_16840441_3362.cpp:22:9: error: expected ';' before 'mq'
         mq a[100010];
         ^
0_0_16840441_3362.cpp:26:28: error: 'a' was not declared in this scope
             scanf("%d %d",&a[i].x,&a[i].h);
                            ^
0_0_16840441_3362.cpp:29:14: error: 'a' was not declared in this scope
         sort(a,a+N,cmp);
              ^