P1622 释放囚犯

R72788347

Luogu/P1622/P1622.cpp

@@ -0,0 +1,35 @@
+#include <algorithm>
+#include <iostream>
+#include <limits>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 1005;
+
+int p, q, a[N], f[N][N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+
+    cin >> p >> q;
+    for (int i = 1; i <= q; i++) {
+        cin >> a[i];
+    }
+
+    std::sort(a + 1, a + 1 + q);
+    a[q + 1] = p + 1;
+    for (int l = 1; l <= q; l++) {
+        for (int i = 1, j = i + l - 1; j <= q; i++, j++) {
+            f[i][j] = std::numeric_limits<int>::max();
+            for (int k = i; k <= j; k++) {
+                f[i][j] = std::min(f[i][j], f[i][k - 1] + f[k + 1][j] + a[j + 1] - a[i - 1] - 2);
+            }
+        }
+    }
+
+    cout << f[1][q] << endl;
+
+    return 0;
+}