#include <bits/stdc++.h>

using namespace std;

const int MaxN = (int)1e6 + 10;
const int INF = 1e9;

int solve(int a, int b, int c) {
	if (a > c) {
		swap(a, c);
	}
	if (b > a && b > c) {
		a = -a;
		b = -b;
		c = -c;
		swap(a, c);
	}
	if (a <= b && b <= c) {
		int x = b - a;
		int y = c - b;
		if (x > y) {
			swap(x, y);
		}
		return (y - x + 1) / 2;
	}
	// a >= b && c >= b
	return a - b + (c - a + 1) / 2;
}

int rnd(int l, int r) {
	return (1LL * RAND_MAX * rand() + rand()) % (r - l + 1) + l;
}

int main() {
//	freopen("input.txt", "r", stdin);
//	freopen("output.txt", "w", stdout);
/*	freopen("input.txt", "w", stdout);
	printf("%d\n", 10000);
	for (int i = 1; i <= 10000; ++i) {
		if (i <= 1000) {
			printf("%d %d %d\n", rnd(-10, +10), rnd(-10, +10), rnd(-10, +10));
		} else {
			printf("%d %d %d\n", rnd(-INF, INF), rnd(-INF, INF), rnd(-INF, INF));
		}
	}*/
	int t;
	cin >> t;
	while (t --> 0) {
		int a, b, c;
		cin >> a >> b >> c;
		cout << solve(a, b, c) << '\n';
	}
	return 0;
}