| # |
Submission time |
Handle |
Problem |
Language |
Result |
Execution time |
Memory |
| 445754 |
2021-07-19T13:36:55 Z |
hamerin |
Phibonacci (kriii2_P) |
C++17 |
|
0 ms |
0 KB |
M = int(1e9 + 7)
mod = M**3
def ext_euc(a, b):
if b == 0:
return (a, 1, 0)
g, x, y = ext_euc(b, a % b)
return (g, y, x-(a//b)*y)
def matmul(l, r):
return [[(l[0][0]*r[0][0]+l[0][1]*r[1][0]) % mod, (l[0][0]*r[0][1]+l[0][1]*r[1][1]) % mod],
[(l[1][0]*r[0][0]+l[1][1]*r[1][0]) % mod, (l[1][0]*r[0][1]+l[1][1]*r[1][1]) % mod]]
def fibo(n):
if n == -1:
return 1
base = [[1, 1], [1, 0]]
target = [[1, 0], [0, 1]]
while n:
if n % 2:
target = matmul(target, base)
base = matmul(base, base)
n //= 2
return target[0][1]
N, K = map(int, input().split())
Fnk = fibo(N*K)
Fk = fibo(K)
Fnkm1 = fibo(N*K-1)
Fkm1 = fibo(K-1)
while Fk % M == 0 and Fnk % M == 0:
Fk /= M
Fnk /= M
A = (Fnk * ext_euc(Fk, mod)[1]) % M
B = (Fnkm1 - A * Fkm1) % M
print(A, B)
Compilation message
P.cpp:1:1: error: 'M' does not name a type
1 | M = int(1e9 + 7)
| ^
