python-algorithm
[백준] 17950
무적김두칠
2021. 1. 19. 09:35
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import sys
h,x=map(int,sys.stdin.readline().split())
r=1000000007
ans=0
cnt=1
for _ in range(h):
cnt*=x
cnt %= r
ans+= int(sys.stdin.readline())*cnt
ans%=r
print(ans)
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cs |
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