32 lines
434 B
C++
32 lines
434 B
C++
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#include <iostream>
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#include <iomanip>
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#include <cmath>
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using namespace std;
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double silnia(int a){
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int i,b=1;
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for(i=1;i<=a;i++){
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b*=i;
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}
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return b;
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}
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int main(){
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double eps,liczba=1,pom;
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int i=1;
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cin>>eps;
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do{
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pom=liczba;
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liczba=pom+1/silnia(i);
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i++;
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}while(abs(liczba-pom)>eps);
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int prec=1;
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while(eps!=1){
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eps=eps*10;
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prec++;
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}
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cout<<setprecision(prec)<<liczba;
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return 0;
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}
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