28 lines
461 B
C++
28 lines
461 B
C++
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#include <bits/stdc++.h>
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using namespace std;
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int main() {
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ios::sync_with_stdio(0);
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cin.tie(0);
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vector<int> l1, l2;
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string line;
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while (getline(cin, line) && !line.empty()) {
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istringstream l(line);
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int a, b;
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l >> a >> b;
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l1.push_back(a);
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l2.push_back(b);
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}
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sort(l1.begin(), l1.end());
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sort(l2.begin(), l2.end());
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long long result = 0;
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for (auto i = 0; i < l1.size(); i++) {
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result += abs(l1[i] - l2[i]);
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}
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cout << result << '\n';
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}
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