DCP-251: Journey By Circle Back to All Problems
Medium
Math > Number Theory
Satalite_A and Satalite_B begin their journey respectively from mark A and mark B . ![enter image description here][1] The radius of inner circle is r1 and outer circle is r2. Velocity of both satellite is **π m.s-1**. You need to find the minimum time needed for Satalite_A and Satalite_B to come at initial position at the same time after the journey start.! Input: ------ Input starts with an integer **T (T <= 10000)** denoting the number of test cases. Next T lines contain 2 integer **r1, r2 (1 <= r1 < r2 <= 10^9)**. Output: ------- For each test case, output one line containing the expected answer.See the sample I/O. Sample Input ------------ 1 1 2 Sample Output ------------- 4 [1]: https://s3-ap-southeast-1.amazonaws.com/devskillimagestorage/questionimages/d34cdb7b-87b9-cae6-2a1d-08d45639741a_c871f3f5a3bd4dcba789d7ff05f3e89d_W261xH232.png
Problem Setter:
MD Musfiqur Rahman Sanim
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Problem Limits
| Language | Time Limit (seconds) |
| C | 0.50 |
| C++ | 0.50 |
| C++14 | 0.50 |
| C# | 1.00 |
| Go | 1.00 |
| Java | 1.00 |
| JavaScript | 1.00 |
| Objective-C | 1.00 |
| Perl | 1.00 |
| PHP | 1.00 |
| Python | 1.00 |
| Python3 | 1.00 |
| Ruby | 1.00 |
| VB.Net | 1.00 |
Problem Stats
155/449
Solve/Submission
Ranking
| # | User | Language | Timing |
|---|---|---|---|
| 01 | rajdipsaha | Cpp14 | 0.00s |
| 02 | MAHRahat | Cpp14 | 0.00s |
| 03 | haasib | Cpp14 | 0.00s |
| 04 | kitorp | Cpp14 | 0.00s |
| 05 | ashraful_haque | Cpp14 | 0.00s |
| 06 | evonloch | Cpp14 | 0.00s |
| 07 | Morass | Cpp14 | 0.00s |
| 08 | Robbinb1993 | Cpp14 | 0.00s |
| 09 | prateepm | Cpp14 | 0.01s |
| 10 | pentagon9 | Cpp14 | 0.01s |
| 11 | abdulmukit | Cpp | 0.01s |
| 12 | smriad | Cpp14 | 0.01s |
| 13 | mahmud2690 | Cpp14 | 0.01s |
| 14 | monir769 | Cpp | 0.01s |
| 15 | trifiasco | Cpp14 | 0.01s |
| 16 | promit_mist | Cpp14 | 0.01s |
| 17 | HM39 | Cpp14 | 0.01s |
| 18 | kissu_pari_na | Cpp14 | 0.01s |
| 19 | Himul | Cpp14 | 0.01s |
| 20 | madcoder | Cpp14 | 0.01s |
| 21 | BlurryFace | Cpp14 | 0.01s |
| 22 | SKL12 | Cpp14 | 0.01s |
| 23 | mukhter2 | Cpp14 | 0.01s |
| 24 | feodorv | Cpp14 | 0.01s |
| 25 | AlaminJust | Cpp14 | 0.01s |
| 26 | saurabh3240 | Cpp14 | 0.01s |
| 27 | terminator_c | Cpp14 | 0.01s |
| 28 | iamsadee | Cpp14 | 0.01s |
| 29 | pulak_ict_mbstu | Cpp14 | 0.01s |
| 30 | sakib_muhit | Cpp14 | 0.01s |
| 31 | prantacse14 | Cpp14 | 0.01s |
| 32 | Anubis | Cpp14 | 0.01s |
| 33 | giash_uddin | Cpp14 | 0.01s |
| 34 | ibrahimnsu15 | Cpp14 | 0.01s |
| 35 | zyyxxx | Cpp14 | 0.01s |
| 36 | emrul | Cpp14 | 0.01s |
| 37 | shaft | Cpp14 | 0.01s |
| 38 | as_couple | Cpp14 | 0.01s |
| 39 | Nazmul_WUB | Cpp14 | 0.01s |
| 40 | mhiceiuk | Cpp14 | 0.01s |
| 41 | sazal_dev | Cpp14 | 0.01s |
| 42 | Masum_ice | Cpp14 | 0.01s |
| 43 | liar | Cpp14 | 0.01s |
| 44 | orpib | Cpp14 | 0.01s |
| 45 | Knight_King | Cpp14 | 0.01s |
| 46 | shahincsejnu | Cpp14 | 0.01s |
| 47 | shishir09 | Cpp14 | 0.01s |
| 48 | robincse14 | Cpp14 | 0.01s |
| 49 | _zErO_ | Cpp14 | 0.01s |
| 50 | ThunderStroke | Cpp14 | 0.01s |