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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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int a, b;
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cin >> a >> b;
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//更换1
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swap(a, b);
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cout << a << " " << b;
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cout << endl;
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//更换2
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int c;
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c = a;
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a = b;
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b = c;
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cout << a << " " << b;
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return 0;
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}
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