The minimal cost for test case 1 is 6.
There is no reliable net possible for test case 2.
The minimal cost for test case 3 is 15.
The minimal cost for test case 4 is 11.
The minimal cost for test case 5 is 9.
There is no reliable net possible for test case 6.
The minimal cost for test case 7 is 59.
The minimal cost for test case 8 is 9.
The minimal cost for test case 9 is 10.
The minimal cost for test case 10 is 15.