include
bits/stdc++.h
iostream
iomanip
fstream
vector
algorithm
stack
queue
define
list
set
utility
cstdlib
cstdio
cmath
cctype
cstring
ctime
cassert
cstddef
windows.h
using
namespace
std
main
int
double
char
long long
void
bool
string
return
while
for
scanf
printf
cin
cout
continue
break
if
else
ceil()
floor()
abs()
unsigned
|
&
&&
||
^
~
min
max
&&
%lf
%d
%llf
%lld
%ld
%u
%o
%lu
%s
%c
%.nf
pow()
sqrt()
do
false
true
clear()
length()
size()
sizeof()
memset()
strlen()
string
endl
c_str()
find()
size_t
string:npos
substr()
find_first_of
find_lasst_of
pop_back()
sort()
gets()
fgets()
getline()
reverse()
getchar()
strcpy()
float
iostream
const
switch
register
case
typedef
struct
define
sytem
freopen
stdin
stdout
begin()
end()
define
freopen(" "," ", )
stdin
stdout
fill()
strcat()
fabs()
strcmp()
endl
check()
typedef
map<>
throw
try
catch
ios::sync_with_stdio
cin.tie
cout.tie
push_back