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11 lines
196 B
C++
11 lines
196 B
C++
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#include <math.h>
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#include <stdio.h>
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#define PI 3.1415927
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int main(void)
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{
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double r;
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while (scanf("%lf", &r) != EOF)
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printf("%.3lf\n", 4.0*PI*r*r*r/3.0);
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return 0;
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}
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