41 lines
792 B
C++
41 lines
792 B
C++
#include <iostream>
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#include <vector>
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#include <algorithm>
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#include <iomanip>
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struct Acc {
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double sum = 0;
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size_t count = 0;
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void operator()(double value) {
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sum += value;
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count++;
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}
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};
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int main() {
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std::vector<double> data;
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double value;
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while (std::cin >> value) data.push_back(value);
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size_t n = data.size();
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size_t first_cut = n / 10;
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auto it_begin = data.begin() + first_cut;
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auto it_end = data.end() - first_cut;
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std::sort(it_begin, it_end);
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size_t min_cut = (it_end - it_begin) / 10;
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it_begin += min_cut;
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it_end -= min_cut;
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Acc acc = std::for_each(it_begin, it_end, Acc());
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std::cout << std::fixed << std::setprecision(10);
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std::cout << acc.sum / acc.count << std::endl;
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return 0;
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} |