A. Creating a Character（Educational Codeforces Round 72 (Rated for Div. 2) ）

You play your favourite game yet another time. You chose the character you didn‘t play before. It has strstr points of strength and intint points of intelligence. Also, at start, the character has expexp free experience points you can invest either in strength or in intelligence (by investing one point you can either raise strength by 11 or raise intelligence by 11).

Since you‘d like to make some fun you want to create a jock character, so it has more strength than intelligence points (resulting strength is strictly greater than the resulting intelligence).

Calculate the number of different character builds you can create (for the purpose of replayability) if you must invest all free points. Two character builds are different if their strength and/or intellect are different.

Input

The first line contains the single integer TT (1≤T≤1001≤T≤100) — the number of queries. Next TT lines contain descriptions of queries — one per line.

This line contains three integers strstr, intint and expexp (1≤str,int≤1081≤str,int≤108, 0≤exp≤1080≤exp≤108) — the initial strength and intelligence of the character and the number of free points, respectively.

Output

Print TT integers — one per query. For each query print the number of different character builds you can create.

Example input Copy

4
5 3 4
2 1 0
3 5 5
4 10 6

output Copy

3
1
2
0

Note

In the first query there are only three appropriate character builds: (str=7,int=5)(str=7,int=5), (8,4)(8,4) and (9,3)(9,3). All other builds are either too smart or don‘t use all free points.

In the second query there is only one possible build: (2,1)(2,1).

In the third query there are two appropriate builds: (7,6)(7,6), (8,5)(8,5).

In the fourth query all builds have too much brains.

 

 

int main()
{
    int cnt,n,m,k;
    while(cin>>n)
    {
        while(n--)
        {
            cin>>m>>k>>cnt;
            cout<<min( max( (m+cnt-k+1)/2 , 0 ) , cnt+1 )<<endl;            
        }
    }
    ok;
}