12 lines
147 B
C++
12 lines
147 B
C++
#include<cstdio>
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#define pi 3.14
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using namespace std;
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int main()
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{
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double r;
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scanf("%lf",&r);
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printf("%.2lf\n",4.0/3.0*pi*r*r*r);
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return 0;
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}
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