/in/foo.cc: In function 'int main()':
/in/foo.cc:8:2: error: expected ';' before 'for'
  for(int i=0;i<n;i++){
  ^~~
/in/foo.cc:8:14: error: 'i' was not declared in this scope
  for(int i=0;i<n;i++){
              ^
/in/foo.cc:5:10: warning: unused variable 'q' [-Wunused-variable]
  int n,x,q,k;
          ^