QOJ: The 3rd Universal Cup. Stage 5: Moscow

QOJ/9135.cpp

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+/**
+ * @file 9135.cpp
+ * @author Macesuted (i@macesuted.moe)
+ * @date 2024-09-03
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
+#include <bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+
+#define maxn 505
+
+typedef pair<int, int> pii;
+typedef pair<int64_t, int> pli;
+
+int64_t a[maxn], f[maxn][maxn];
+vector<pii> graph[maxn];
+bool vis[maxn];
+
+void solve(void) {
+    int n;
+    cin >> n;
+    for (int i = 1; i <= n; i++) cin >> a[i];
+
+    for (int len = 2; len <= n; len++) {
+        priority_queue<pli, vector<pli>, greater<pli>> que;
+        for (int i = 1; i <= n; i++) graph[i].clear(), vis[i] = false;
+
+        for (int l = 1, r = len; r <= n; l++, r++) {
+            f[l][r] = 1e18;
+            for (int c = 1; c <= n; c++) {
+                int clen = min(c - 1, n - c), cl = c - clen, cr = c + clen;
+
+                auto rev = [&](int p) { return p + (c - p) * 2; };
+
+                int pl = rev(r), pr = rev(l);
+                if (1 <= pl && pr <= n) graph[pl].emplace_back(l, a[c]);
+
+                if (cl == 1) {
+                    if (cr >= r || cr < l) continue;
+                    f[l][r] = min(f[l][r], max(f[rev(cr)][rev(l)], f[cr + 1][r]) + a[c]);
+                } else {
+                    if (cl <= l || cl > r) continue;
+                    f[l][r] = min(f[l][r], max(f[rev(r)][rev(cl)], f[l][cl - 1]) + a[c]);
+                }
+            }
+            que.emplace(f[l][r], l);
+        }
+        while (!que.empty()) {
+            int p = que.top().second;
+            que.pop();
+            if (vis[p]) continue;
+            vis[p] = true;
+            for (auto [i, d] : graph[p])
+                if (f[i][i + len - 1] > f[p][p + len - 1] + d) que.emplace(f[i][i + len - 1] = f[p][p + len - 1] + d, i);
+        }
+    }
+
+    cout << f[1][n] << endl;
+    return;
+}
+
+int main() {
+    ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
+
+    int _ = 1;
+    while (_--) solve();
+
+    return 0;
+}

QOJ/9136.cpp

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+/**
+ * @file 9136.cpp
+ * @author Macesuted (i@macesuted.moe)
+ * @date 2024-09-03
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
+#include <bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+void solve(void) {
+    int n = 4, k = 2048;
+    cout << 25 << endl;
+    cout << "$0 = $1 * " << fixed << 1. / k << endl;
+    for (int i = 1; i <= n; i++) cout << "$" << i << " = $0 * $" << i - 1 << endl;
+    for (int i = 1; i <= n; i++) {
+        double frac = 1;
+        for (int j = 1; j <= i + 1; j++) frac /= j;
+        cout << "$" << i << " = $" << i << " * " << fixed << frac << endl;
+    }
+    cout << "$0 = $0 + 1" << endl;
+    for (int i = 1; i <= n; i++) cout << "$0 = $0 + $" << i << endl;
+    for (int i = 2; i <= k; i *= 2) cout << "$0 = $0 * $0" << endl;
+    return;
+}
+
+int main() {
+    ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
+
+    cout << setprecision(15);
+    solve();
+
+    return 0;
+}

QOJ/9142.cpp

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+/**
+ * @file 9142.cpp
+ * @author Macesuted (i@macesuted.moe)
+ * @date 2024-09-03
+ *
+ * @copyright Copyright (c) 2024
+ *
+ */
+
+#include <bits/stdc++.h>
+using namespace std;
+
+#define endl '\n'
+
+#define maxn 200005
+
+int a[maxn];
+
+void solve(void) {
+    int n;
+    cin >> n;
+    for (int i = 1; i <= n; i++) cin >> a[i];
+    int64_t sum = 0;
+    sort(a + 1, a + n + 1);
+    for (int i = 1; i < n; i++) sum += a[i];
+    cout << sum << endl;
+    return;
+}
+
+int main() {
+    ios::sync_with_stdio(false), cin.tie(nullptr), cout.tie(nullptr);
+
+    int _ = 1;
+    cin >> _;
+    while (_--) solve();
+
+    return 0;
+}