32 lines
No EOL
556 B
C++
32 lines
No EOL
556 B
C++
// ac_5_16.cpp
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// Горбацевич Андрей
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#include <iostream>
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#include <cmath>
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using namespace std;
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int fk(int i) {
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if ((i == 0) || (i == 1))
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return 1;
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int out = 1;
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for (int j = 2; j <= i; j++) {
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out *= j;
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}
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return out;
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}
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double df(int N, int M) {
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double out = 0;
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int fak = fk(M);
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for (int k = M; k <= N; k++) {
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out += k*k*log(fak);
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fak *= k+1;
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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, M;
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cout << "N, M >>>";
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cin >> N >> M;
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cout << "S= " << df(N, M) << endl;
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} |