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1589. The Fence
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There is a long fence not far from H&H office. A while ago boards of the fence were painted in different colors. Now H&H CTO wants to know, if there are two red boards in the fence with the number of boards between them multiple to K. Входные данные The first line contains the integer number K (1 ≤ K ≤ 100000). The second line contains the description of the fence. Symbol —"1" indicates the red board, and symbol "0" — any other. The fence contains not more than 100000 boards. Выходные данные Output the numbers of required boards, or output two zeros if they do not exist. Boards are numbered starting with 1 from left to right. Пример Входные данные 3 Выходные данные 3 10
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| Problems from Contests and Camps / | Trainings in Perm 2009 / | 07.07.09 Big Contest / |
| 1588. G - Pair | 1589. | 1590. I - Painting the Natural Numbers | 1591. J - Selection | 1592. K - Parquet |
| time generating 0.109 sec. |
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