题解 | #单组_spj判断浮点误差#
单组_spj判断浮点误差
https://www.nowcoder.com/practice/6652094c6a0e4381911b541ed664d8b7
import sys
import math
input_data = sys.stdin.read()
lines = input_data.strip().split('\n')
data = int(lines[0])
print(math.pi*data**2)
单组_spj判断浮点误差
https://www.nowcoder.com/practice/6652094c6a0e4381911b541ed664d8b7
import sys
import math
input_data = sys.stdin.read()
lines = input_data.strip().split('\n')
data = int(lines[0])
print(math.pi*data**2)
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