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18 lines
386 B
C++
18 lines
386 B
C++
#include <bits/stdc++.h>
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using namespace std;
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typedef long long ll;
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const int N = 1e5 + 50;
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int a[N];
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int main()
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{
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int k, n;
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scanf("%d%d", &n, &k);
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for (int i = 0; i < n; i++)
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scanf("%d", a + i);
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sort(a, a + n);
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int ans = a[n - 1] - a[0];
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for (int i = k - 1; i < n; i++)
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ans = min(ans, a[i] - a[i - k + 1]);
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printf("%d", ans);
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return 0;
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} |