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1311 A.cpp
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/**
* Git >> Mohsin_Riad
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**/
#include<bits/stdc++.h>
using namespace std;
#define IOS ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0);
#define mx 1000
#define endl "\n"
#define pb push_back
#define pob pop_back
typedef long long ll;
typedef double dd;
const int N = 1e5;
int main()
{
IOS
//freopen("input.txt", "r", stdin);
int t;
cin>>t;
while(t--)
{
ll a, b, cnt=0;
cin>>a>>b;
if(a==b)
{
cout<<"0"<<endl;
continue;
}
int temp = abs(a-b);
if(a>b)
if(temp%2==0) cnt++;
else cnt+=2;
else
if(temp%2!=0) cnt++;
else cnt+=2;
cout<<cnt<<endl;
}
return (0);
}