UVA 299 Train Swapping

#include <cstdio>

int main() {
	int t;
	scanf("%d", &t);
	while (t--) {
		int n;
		scanf("%d", &n);
		int arr[60] = {0};
		for (int i = 0; i < n; i++)
			scanf("%d", &arr[i]);
		for (int i = 0; i < n; i++)
			for (int j = i + 1; j < n; j++)
				if (arr[i] > arr[j])
					arr[55]++;
		printf("Optimal train swapping takes %d swaps.\n", arr[55]);
	}
	return 0;
}