17 lines
210 B
C++
17 lines
210 B
C++
#include<cstdio>
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using namespace std;
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double f(double x,int n)
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{
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if(n==1) return x/(1+x);
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return x/(n+f(x,n-1));
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}
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int main()
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{
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double x;
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int n;
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scanf("%lf%d",&x,&n);
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printf("%g\n",f(x,n));
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return 0;
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}
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