이산 로그 (More Huge)
Time Limit: 1 SecMemory Limit: 256 MiB
Example Input 1
2 32
Example Output 1
5
Example Input 2
16 24790162791070512
Example Output 2
-1
Example Input 3
998244353 1
Example Output 3
0
Example Input 4
104599830199659147 341761921199135943
Example Output 4
1292257
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