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1014. 登山
https://www.acwing.com/problem/content/submission/code_detail/8792171/
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AcWing/1014/1014.cpp
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29
AcWing/1014/1014.cpp
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#include <bits/stdc++.h>
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using namespace std;
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int n, h[1005], f[1005], g[1005], ans;
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int main() {
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cin >> n;
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for (int i = 1; i <= n; i++) {
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cin >> h[i];
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}
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for (int i = 1; i <= n; i++) {
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f[i] = 1;
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for (int j = 1; j <= i; j++) {
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if (h[i] > h[j]) f[i] = max(f[i], f[j] + 1);
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}
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}
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for (int i = n; i >= 1; i--) {
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g[i] = 1;
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for (int j = n; j >= i; j--) {
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if (h[i] > h[j]) g[i] = max(g[i], g[j] + 1);
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}
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}
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for (int i = 1; i <= n; i++) {
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ans = max(ans, f[i] + g[i] - 1);
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}
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cout << ans << endl;
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return 0;
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}
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