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4159. 알래스카 - Useful Blog

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4159. 알래스카

written by Useful·BOJ 4159


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

using namespace std;

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

    while(true){

int

N

;

cin

>>

N

;

if

(

N

==

0

)

{

break

;

}

vector

<

int

>

arr

;

for

(

int

i

=

0

;

i

<

N

;

i

++

)

{

int

input

;

cin

>>

input

;

arr

.

push_back

(

input

)

;

}

sort

(

arr

.

begin

(

)

,

arr

.

end

(

)

)

;

arr

.

push_back

(

1422

)

;

bool flag

=

true

;

for

(

int

i

=

1

;

i

<

N

;

i

++

)

{

if

(

arr

[

i

]

-

arr

[

i

-

1

]

>

200

)

{

flag

=

false

;

break

;

}

}

if

(

flag

&&

1422

-

arr

[

N

-

1

]

>

100

)

{

flag

=

false

;

}

cout

<<

(

flag

?

"POSSIBLE"

:

"IMPOSSIBLE"

)

<<

"\n"

;

}

return

0

;

}