满分题解：

#include<bits/stdc++.h> 
using namespace std; 
int main(){ 
  int a,b; 
  cin>>a>>b; 
  if(abs(a%2)==1 and abs(b%2)==1) 
  cout<<2; 
  else if(abs(a%2)==1 or abs(b%2)==1) 
  cout<<1; 
  else cout<<0; 
  return 0; }