foo.cpp:1:1: error: 'include' does not name a type
 include <iostream> include <stdio.h> 
 ^
foo.cpp: In function 'int main()':
foo.cpp:30:26: error: 'scanf' was not declared in this scope
 scanf( "%d %d" , &n , &m );
                          ^
foo.cpp:32:1: error: 'cin' was not declared in this scope
 cin >> a[i] + 1;
 ^
foo.cpp:47:1: error: 'cout' was not declared in this scope
 cout << ans << endl;
 ^
foo.cpp:47:16: error: 'endl' was not declared in this scope
 cout << ans << endl;
                ^