Add FZOI Codes

FZOI/「POJ2456」Aggressive Cows.cpp

@@ -0,0 +1,42 @@
+#include <iostream>
+#include <cstdio>
+#include <algorithm>
+using namespace std;
+int judge(int, int);
+int arr[100000];
+int n, c;
+int main()
+{
+    scanf("%d%d", &n, &c);
+    for (int i = 0; i < n; i++)
+    {
+        scanf("%d", &arr[i]);
+    }
+    sort(arr, arr + n);
+    int l = arr[0];
+    int r = arr[n - 1] - arr[0];
+    int D;
+    while (r >= l)
+    {
+        D = (l + r) >> 1;
+        if (judge(n, D) >= c)
+            l = D + 1;
+        else
+            r = D - 1;
+    }
+    printf("%d\n", l - 1);
+    return 0;
+}
+int judge(int n, int D)
+{
+    int i, s = 1, p = arr[0];
+    for (i = 1; i < n; i++)
+    {
+        if (arr[i] - p >= D)
+        {
+            s++;
+            p = arr[i];
+        }
+    }
+    return s;
+}