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#include <cstdio>
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#include <algorithm>
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using namespace std;
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const int N = 2e5 + 10;
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int a[N];
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int main()
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{
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int n;
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scanf("%d", &n);
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for (int i = 0; i < n; i++) scanf("%d", a + i);
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sort(a, a + n);
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printf("%d", n - (unique(a, a + n) - a));
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return 0;
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} |
