23 lines
432 B
C++
23 lines
432 B
C++
#include <bits/stdc++.h>
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using namespace std;
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int w[1001];
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int s[1001];
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int main() {
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int n, m;
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cin >> n >> m;
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for (int i = 1; i <= n; i++) {
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cin >> w[i];
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}
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int ans = 0;
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sort(w + 1, w + 1 + n);
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int j = 0;
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for(int i = 1; i <= n; i++){
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j++;
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if (j == m+ 1) j = 1;
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s[j] += w[i];
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ans += s[j];
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}
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cout << ans << endl;
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return 0;
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} |