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#include <bits/stdc++.h>
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using namespace std;
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int b[] = {0, 13, 32, 9, 40, 19};
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int main() {
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int n = 5;
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sort(b + 1, b + n + 1);
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int tot = unique(b + 1, b + n + 1) - b - 1;
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cout << tot << endl;
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for (int i = 1; i <= tot; i++) cout << b[i] << " ";
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return 0;
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}
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/*
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输出:
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5
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9 13 19 32 40
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*/ |
