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7 power 1998. Moscow 1998
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0:00 Problem description
0:25 Operation example
0:59 Start and End
1:10 Hints
1:49 Solution
This problem was presented in 1998 on the Moscow olympiad. To solve it you would need to find invariant and play with congurence.
0:25 Operation example
0:59 Start and End
1:10 Hints
1:49 Solution
This problem was presented in 1998 on the Moscow olympiad. To solve it you would need to find invariant and play with congurence.
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