struct ioss
{
#define endl '\n'
static const int LEN =
20000000;
char obuf[LEN], *oh =
obuf;
std::streambuf *
fb;
ioss()
{
ios::sync_with_stdio(false);
cin.tie(NULL);
cout.tie(NULL);
fb =
cout.rdbuf();
}
inline char gc()
{
static char buf[LEN], *s, *
t, buf2[LEN];
return (s == t) && (t = (s = buf) + fread(buf,
1, LEN, stdin)), s == t ? -
1 : *s++
;
}
inline ioss &
operator>>(
long long &
x)
{
static char ch, sgn, *
p;
ch = gc(), sgn =
0;
for (; !isdigit(ch); ch =
gc())
{
if (ch == -
1)
return *
this;
sgn |= ch ==
'-';
}
for (x =
0; isdigit(ch); ch =
gc())
x = x *
10 + (ch ^
'0');
sgn && (x = -
x);
return *
this;
}
inline ioss &
operator>>(
int &
x)
{
static char ch, sgn, *
p;
ch = gc(), sgn =
0;
for (; !isdigit(ch); ch =
gc())
{
if (ch == -
1)
return *
this;
sgn |= ch ==
'-';
}
for (x =
0; isdigit(ch); ch =
gc())
x = x *
10 + (ch ^
'0');
sgn && (x = -
x);
return *
this;
}
inline ioss &
operator>>(
char &
x)
{
static char ch;
for (; !isalpha(ch); ch =
gc())
{
if (ch == -
1)
return *
this;
}
x =
ch;
return *
this;
}
inline ioss &
operator>>(
string &
x)
{
static char ch, *
p, buf2[LEN];
for (; !isalpha(ch) && !isdigit(ch); ch =
gc())
if (ch == -
1)
return *
this;
p =
buf2;
for (; isalpha(ch) || isdigit(ch); ch =
gc())
*p = ch, p++
;
*p =
'\0';
x =
buf2;
return *
this;
}
inline ioss &
operator<<(
string &
c)
{
for (auto &
p : c)
this->
operator<<
(p);
return *
this;
}
inline ioss &
operator<<(
const char *
c)
{
while (*c !=
'\0')
{
this->
operator<<(*
c);
c++
;
}
return *
this;
}
inline ioss &
operator<<(
const char &
c)
{
oh == obuf + LEN ? (fb->sputn(obuf, LEN), oh = obuf) :
0;
*oh++ =
c;
return *
this;
}
inline ioss &
operator<<(
int x)
{
static int buf[
30], cnt;
if (x <
0)
this->
operator<<(
'-'), x = -
x;
if (x ==
0)
this->
operator<<(
'0');
for (cnt =
0; x; x /=
10)
buf[++cnt] = x %
10 |
48;
while (cnt)
this->
operator<<((
char)buf[cnt--
]);
return *
this;
}
inline ioss &
operator<<(
long long x)
{
static int buf[
30], cnt;
if (x <
0)
this->
operator<<(
'-'), x = -
x;
if (x ==
0)
this->
operator<<(
'0');
for (cnt =
0; x; x /=
10)
buf[++cnt] = x %
10 |
48;
while (cnt)
this->
operator<<((
char)buf[cnt--
]);
return *
this;
}
~
ioss()
{
fb->sputn(obuf, oh -
obuf);
}
} io;
使用：io>>x>>y; 即可
转载于:https://www.cnblogs.com/FrankChen831X/p/11261146.html
