Please, give me same test. I hava WA on test 7.

I fogotten the problem and didn't remember
structure of difficult tests.Tne next is random.
20 7

14
87 90
103 106
119 122
127 134
143 150
159 166
183 190
215 222
247 254
303 318
383 414
543 574
895 958
2687 2814

thank you, but I have allready found my mistake. :-)