14 lines
338 B
C++
14 lines
338 B
C++
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constexpr int B = 2;
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constexpr int N = 1e5;
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constexpr int s = 31623; // sqrt(MDL)
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int a[N], b[N];
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void prep() {
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a[0] = b[0] = 1;
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for(int i = 1; i <= s; i++) a[i] = (ll)a[i - 1] * B % MDL ;
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for(int i = 1; i <= s; i++) b[i] = (ll)b[i - 1] * a[s] % MDL ;
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}
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ll lpow(ll power) { return ll(b[power / s]) * a[power % s] % MDL; }
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