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difficultlong楼主2024/9/16 15:05
#include<bits/stdc++.h>
using namespace std;
int r;
int main(){
	scanf("%d",&r);
	double v=4/3*3.14*r*r*r;
	printf("%.5lf",v);
	return 0;
}
2024/9/16 15:05
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