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[AtCoder]ABC-150|B - Count ABC
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提出結果
def getInt():
return int(input())
def getString():
return input()
def main():
n = getInt()
s = getString()
c = 0
for i in range(n - 2):
if s[i:i+3] == 'ABC':
c += 1
print(c)
if __name__ == "__main__":
main()
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