Submission #2497172

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Source Code Expand

s=input()
N=len(s)
K=int(input())
L=[]
for i in range(1,K+1):
    for j in range(N-i+1):
        L.append(s[j:j+i])
L.sort()
M=len(L)
R=[L[0]]
k=0
for i in range(1,M):
    if L[i] !=R[k]:
        R.append(L[i])
        k+=1
print(R[K-1])

        

Submission Info

Judge Result