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| #include <cstdint>
#include <cstdio>
#include <cstdlib>
#include <fcntl.h>
#include <sys/mman.h>
#include <sys/stat.h>
#include <unistd.h>
using namespace std;
struct fast_io {
size_t file_size;
#define MYBUF (1 << 24)
char *rp, *wp;
char pbuf[MYBUF], *pp = pbuf;
fast_io() {
struct stat sb;
if (fstat(0, &sb) == -1)
exit(1);
file_size = sb.st_size;
rp = (char *)mmap(nullptr, file_size, PROT_READ, MAP_PRIVATE, 0, 0);
}
~fast_io() { munmap(rp, file_size), fwrite(pbuf, 1, pp - pbuf, stdout); }
inline char gc() { return *rp++; }
inline uint32_t rd() {
uint32_t x = 0;
char c = gc();
while (c < '0' || c > '9')
c = gc();
for (; c >= '0' && c <= '9'; c = gc())
x = x * 10 + (c ^ '0');
return x;
}
inline void pc(const char &c) {
if (pp - pbuf == MYBUF)
fwrite(pbuf, 1, MYBUF, stdout), pp = pbuf;
*pp++ = c;
}
inline void wt(uint32_t x) {
static int sta[12];
int top = 0;
do {
sta[top++] = x % 10, x /= 10;
} while (x);
while (top)
pc(sta[--top] + '0');
}
} io;
int main() {
return 0;
}
|