Submission #5914710

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Source Code Expand

N,K = map(int,input().split())
*A, = sorted(set(map(int,input().split())))
if A[-1]<K:print("IMPOSSIBLE");exit()
if len(A)==1:
    if A[0]==K:print("POSSIBLE")
    else:print("IMPOSSIBLE")
    exit()
d = min(A[i+1]-a for i,a in enumerate(A[:-1]))
K%=d
for a in A:
    if a%d==K:print("POSSIBLE");break
else:
    print("IMPOSSIBLE")

Submission Info

Judge Result