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17 lines
402 B
C++
17 lines
402 B
C++
#include <bits/stdc++.h>
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using namespace std;
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const int N = 100100;
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int a[N];
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int main() {
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int n, k, ans = 0;
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scanf("%d%d", &n, &k);
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for (int i = 0; i < n; i++) scanf("%d", a + i);
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for (int i = 0; i < n - k; i++)
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ans = max(ans, a[i] + a[2 * (n - k) - i - 1]);
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for (int i = 0; i < n; i++)
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ans = max(ans, a[i]);
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printf("%d", ans);
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return 0;
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} |