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#include<bits/stdc++.h>
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using namespace std;
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int main() {
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long double x;
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//scanf可以提高精度~~~~~
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scanf("%15Lf", &x);//注意这里特殊写法
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printf("%.8Lf", x / 23.0);//写成23也可以
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return 0;
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} |
