제출 #1220561

#제출 시각아이디문제언어결과실행 시간메모리
1220561durdonaRack (eJOI19_rack)Pypy 3
40 / 100
184 ms55140 KiB
mod=10**9+7 def power(a, b): if(b == 0): return 1 if(b % 2): return power(a, b - 1) * a % mod else: y = power(a, b // 2) return y * y % mod; def rec(i,j): if i == 0:return 1 if j%2 == 0: return (rec(i-1,j//2)+power(2,i-1)) % mod else: return rec(i-1,j//2+1) n,k=map(int,input().split()) print(rec(n,k))

컴파일 시 표준 출력 (stdout) 메시지

Compiling 'rack.py'...

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  adding: __main__.pyc (deflated 42%)

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