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31796. 한빛미디어 (Easy) - Useful Blog

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31796. 한빛미디어 (Easy)

written by Useful·BOJ 31796


c
#include <bits/stdc++.h>

using namespace std;

int main(){
    cin.tie(NULL);
    cout.tie(NULL);
    ios_base::sync_with_stdio(false);

    int N;
    cin >>

N

;

vector

<

int

>

arr

;

for

(

int

i

=

0

;

i

<

N

;

i

++

)

{

int

input

;

cin

>>

input

;

arr

.

push_back

(

input

)

;

}

sort

(

arr

.

begin

(

)

,

arr

.

end

(

)

)

;

int

tmp

=

arr

[

0

]

;

int

ans

=

1

;

for

(

int

i

=

1

;

i

<

N

;

i

++

)

{

if

(

arr

[

i

]

>=

tmp

*

2

)

{

tmp

=

arr

[

i

]

;

ans

++

;

}

}

cout

<<

ans

<<

"\n"

;

return

0

;

}