Ticket Status: CF Stress

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Ticket	15767
Problem	1705 -d
Submission	164397133

View hacks & all small testcases

If you want a smaller (or larger), testcase, copy the Generator Parameters, click on Retry, paste it to Compressed parameters and edit it.

Unable to dry run this testcase?
Try making a new request with small values of n_high, t_high, *_high, etc.

Retry

Input

8
14
10111111111111
11101111111111
10
1010000100
0011001000
10
1001110100
1001111000
18
110001101111011011
011010111001110111
8
01000111
00101101
5
00000
00000
8
00010000
01000000
10
1101110111
1111110101

Expected Output

Your Output

4
-1
-1
-1
-1
0
4
-1

Difference

Generator Parameters

--n_high 20 --n_low 4 --q_high 10 --q_low 1