19 lines
293 B
C++
19 lines
293 B
C++
#include<iostream>
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#include<iomanip>
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using namespace std;
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int main(){
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double e = 1.0;
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double factorial = 1.0;
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for (int i = 1; i <= 20; i++)
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{
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factorial *= i;
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e += 1.0 / factorial;
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}
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cout << fixed << setprecision(3) << e << endl;
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return 0;
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} |