27.cpp

/* 
#############################################
Author: hellgod_13
#############################################
*/
#include <bits/stdc++.h>
using namespace std;
#define endl "\n"
#define MOD 1000000007
#define INF INT_MAX
#define ll long long
#define int long long
#define vi vector<int>
#define pii pair<int, int>
#define ld long double
#define PB push_back
#define MP make_pair
#define FF first
#define SS second
#define f(i,a,b) for(int i=a;i<b;i++)
#define rf(i,a,b) for(int i=a;i>=b;i--)
#define max(a, b) (             \
	{                           \
		__typeof__(a) _a = (a); \
		__typeof__(b) _b = (b); \
		_a > _b ? _a : _b;      \
	})
#define min(a, b) (             \
	{                           \
		__typeof__(a) _a = (a); \
		__typeof__(b) _b = (b); \
		_a < _b ? _a : _b;      \
	})
//////////////////////////////////////////////////////////////////////////////
int power(int a, int b)
{
	int res = 1ll;
	while (b > 0)
	{
		if (b % 2ll)
			res = (res * a) % MOD;
		a = (a * a) % MOD;
		b /= 2ll;
	}
	return res;
}
int GCD(int a, int b)
{
	if (b == 0)
		return a;
	return GCD(b, a % b);
}
int fact(int n)
{
	int res = 1;
	for (int i = 2; i <= n; i++)
	{
		res = (res * i) % MOD;
	}
	return res % MOD;
}
//////////////////////////////////////////////////////////////////////////////
bool comp(pair<string, int> a, pair<string, int> b)
{
	if (a.second != b.second)
		return a.second > b.second;
	return a.first < b.first;
}
void solve()
{
  int x,y;cin>>x>>y;
  int maxi=max(x,y);
  int mini=min(x,y);
  vi vec;
  for(int i=mini+1;i<maxi;i++){
   if(i%2!=0){
       vec.PB(i);
   }else{
       continue;
   }
  }
  int sum;
  sum=accumulate(vec.begin(),vec.end(),0);
  cout<<sum<<endl;

    

	
}
signed main()
{
	ios_base::sync_with_stdio(false);
	cin.tie(NULL);
	cout.tie(NULL);

	int tc = 1;
	cin >> tc;
	while (tc--)
	{
		solve();
	}
}