题解 | #DNA序列#
DNA序列
https://www.nowcoder.com/practice/e8480ed7501640709354db1cc4ffd42a
while 1:
try:
DNA_str = input()
N = int(input())
mark = [[], []]
for i in range(len(DNA_str) - N + 1):
mark[0].append(DNA_str[i:i+N])
mark[1].append(mark[0][i].count('C') + mark[0][i].count('G'))
print(mark[0][mark[1].index(max(mark[1]))])
except:
break
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