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Add Odd or Subtract Even.cpp
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Add Odd or Subtract Even.cpp
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// https://codeforces.com/problemset/problem/1311/A
#include <bits/stdc++.h>
#define fi first
#define se second
#define pb push_back
#define mp make_pair
#define ll long long
#define pll pair<long, long>
#define vll vector<long long>
#define inf 1e18
#define range(a,b) substr(a,b-a+1)
#define FIO ios_base::sync_with_stdio(0); cin.tie(0); cout.tie(0)
using namespace std;
int main()
{
FIO;
#ifndef ONLINE_JUDGE
//remove this piece of code when this has to be submitted in kickstart
freopen("input.txt", "r", stdin);
freopen("output.txt", "w", stdout);
//freopen is used to associate a file with stdin or stdout stream in C++
#endif
ll t;
cin >> t;
while (t--) {
ll a, b;
cin >> a >> b;
if (a == b)
cout << 0 << "\n";
else if (a > b)
if (b % 2 == 0)
if (a % 2 == 0)
cout << 1 << "\n";
else
cout << 2 << "\n";
else
if (a % 2 != 0)
cout << 1 << "\n";
else
cout << 2 << "\n";
else if (a < b)
if (a % 2 == 0)
if (b % 2 != 0)
cout << 1 << "\n";
else
cout << 2 << "\n";
else
if (b % 2 == 0)
cout << 1 << "\n";
else
cout << 2 << "\n";
}
return 0;
}