Pagini recente » Cod sursa (job #2127462) | Cod sursa (job #1016113) | Cod sursa (job #2033950) | Cod sursa (job #659217) | Cod sursa (job #2140390)
#include <cstdio>
#include <fstream>
using i32 = int;
using u32 = unsigned int;
using u64 = unsigned long long;
u32 N, A, B, C, v[10000000], w[10000000];
__attribute__((always_inline)) void CountingSort(u32 A[], u32 B[], u32 digit)
{
u32 frequence[256]{}, index[256]; index[0] = ~0;
for(u32 i = N; i; ++frequence[A[--i] >> digit & 255]);
for(u32 i = 0; i != 256; index[++i] = index[~-i] + frequence[~-i]);
for(u32 i = 0; i != N; ++i) B[++index[A[i] >> digit & 255]] = A[i];
}
__attribute__((always_inline)) void read(u32 &number)
{
static char inBuffer[64];
static u32 p = 0; number = 0;
fread(inBuffer, 1, 64, stdin);
while(inBuffer[p] < 48 | inBuffer[p] > 57)
{
++p;
}
while(inBuffer[p] > 47 & inBuffer[p] < 58)
{
number = number * 10 + inBuffer[p] - 48;
++p;
}
}
char outBuffer[11000000]; i32 p = 11000000;
__attribute__((always_inline)) void write(u32 x)
{
outBuffer[--p] = 32;
do
{
outBuffer[--p] = x % 10 + 48;
x /= 10;
}
while(x);
}
struct Mod64
{
__attribute__((always_inline)) Mod64() : n_(0) {}
__attribute__((always_inline)) Mod64(u32 n) : n_(init(n)) {}
__attribute__((always_inline)) static u32 modulus()
{
return mod;
}
__attribute__((always_inline)) static u32 init(u32 w)
{
return reduce(u64(w) * r2);
}
__attribute__((always_inline)) static void set_mod(u32 m)
{
mod = m;
inv = m; for (i32 i = 0; i < 5; ++i) inv *= 2 - inv * m;
r2 = -u64(m) % m;
}
__attribute__((always_inline)) static u32 reduce(u64 x)
{
u32 y = u32(x >> 32) - u32((u64(u32(x) * inv) * mod) >> 32);
return i32(y) < 0 ? y + mod : y;
}
__attribute__((always_inline)) Mod64& operator += (Mod64 rhs)
{
n_ += rhs.n_ - mod;
if(i32(n_) < 0) n_ += mod;
return *this;
}
__attribute__((always_inline)) Mod64 operator + (Mod64 rhs) const
{
return Mod64(*this) += rhs;
}
__attribute__((always_inline)) Mod64& operator *= (Mod64 rhs)
{
n_ = reduce(u64(n_) * rhs.n_);
return *this;
}
__attribute__((always_inline)) Mod64 operator * (Mod64 rhs) const
{
return Mod64(*this) *= rhs;
}
__attribute__((always_inline)) u32 get() const
{
return reduce(n_);
}
static u32 mod, inv, r2;
u32 n_;
};
u32 Mod64 :: mod, Mod64 :: inv, Mod64 :: r2;
i32 main()
{
freopen("radixsort.in", "r", stdin);
read(N); read(A); read(B); read(C);
v[0] = B;
if(C & 1)
{
Mod64 :: set_mod(C);
Mod64 rb = Mod64(B), ra = Mod64(A);
Mod64 el = rb;
for(i32 i = 1; i != N; ++i)
{
el *= ra;
el += rb;
v[i] = el.get();
}
}
else if(C != 2095480566)
{
A %= C, B %= C;
for(i32 i = 1; i != N; ++i)
{
const u64 t = A * v[~-i] + B;
const u32 thi = t >> 32, tlo = t; i32 aux;
asm("divl\t%4" : "=a"(aux), "=d"(v[i]) : "0"(tlo), "1"(thi), "r"(C));
}
}
else
{
for(i32 i = 1; i != N; ++i)
{
u64 j = u64(v[~-i]) * A + B;
v[i] = j < 2095480566 ? j : j - j / 2095480566 * 2095480566;
}
}
CountingSort(v, w, 0);
CountingSort(w, v, 8);
CountingSort(v, w, 16);
CountingSort(w, v, 24);
for(i32 i = N - 1 - (N - 1) % 10; i >= 0; i -= 10)
write(v[i]);
std :: ofstream("radixsort.out").write(outBuffer + p, 10999999 - p);
return 0;
}