0分代码

#include<bits/stdc++.h>
using namespace std;
int t,a,b; 
int main(){
	cin>>t;
	while(t--){
		cin>>a>>b;
		if(a==b){
			cout<<0<<"\n";
		}else if(a<b){
			if((b-a)%2==1){
				cout<<1<<"\n";
			}else{
				if(((b-a)/2)%2==0) cout<<2<<"\n";
				else cout<<3<<"\n";
			}
		}else{
			if((a-b)%2==0) cout<<1<<"\n";
			else cout<<2<<"\n";
		}
	}
}