29 lines
No EOL
527 B
C++
29 lines
No EOL
527 B
C++
// ac_5_17.cpp
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// Горбацевич Андрей
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#include <iostream>
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#include <cmath>
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#include <set>
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using namespace std;
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double df(int N) {
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double out = 0.;
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double i_ = 1;
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for (int i = 1; i <= N; i++) {
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i_ *= i;
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double j_ = 1.;
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double out_ = 1.;
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for (int j = 1; j <= i; j++) {
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j_ *= j;
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out_ *= j_/i_;
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}
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out += out_;
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}
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return out;
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}
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int main() {
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int N;
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cout << "N >>>";
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cin >> N;
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cout << "SP= " << df(N) << endl;
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} |