30 lines
600 B
Python
Executable file
30 lines
600 B
Python
Executable file
import math
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import sys
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def mod_exp(x, y, m):
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k = x % m
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results = {}
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return exp_m(results, k, y, m)
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def exp_m(results, k, y, m):
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if y in results:
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return results[y]
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else:
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if k == 1:
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ret = 1
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elif y == 0:
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ret = 1
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elif y == 1:
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ret = k
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else:
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h = y // 2
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ret = (exp_m(results, k, h, m) % m * exp_m(results, k, y - h, m) % m) % m
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results[y] = ret
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return ret
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line = sys.stdin.readline().split()
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x = int(line[0])
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y = int(line[1])
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m = int(line[2])
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print(mod_exp(x, y, m))
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