#1505. 赴京赶考 （fjgk）

https://sjzezoj.com/submission/55126

S2OJ/1505/1505.cpp

@@ -0,0 +1,56 @@
+#include <iostream>
+#include <algorithm>
+#include <cmath>
+
+using std::cin;
+using std::cout;
+const char endl = '\n';
+
+const int N = 100005;
+
+int n, m, q, d_a[N], d_b[N];
+bool a[N], b[N];
+
+int main() {
+    std::ios::sync_with_stdio(false);
+    cin.tie(nullptr);
+
+    cin >> n >> m;
+
+    for (int i = 1; i <= n; i++) {
+        cin >> a[i];
+    }
+
+    for (int i = 1; i <= m; i++) {
+        cin >> b[i];
+    }
+
+    if (a[1] != a[n]) d_a[0] = 1;
+    for (int i = 1; i <= n; i++) {
+        d_a[i] = d_a[i - 1] + (a[i] != a[i + 1]);
+    }
+
+    if (b[1] != b[m]) d_b[0] = 1;
+    for (int i = 1; i <= m; i++) {
+        d_b[i] = d_b[i - 1] + (b[i] != b[i + 1]);
+    }
+
+    cin >> q;
+
+    while (q--) {
+        std::pair<int, int> s, e;
+
+        cin >> s.first >> s.second >> e.first >> e.second;
+
+        cout << std::min({
+                    std::abs(d_a[s.first - 1] - d_a[e.first - 1]),
+                    d_a[n - 1] - d_a[std::max(s.first, e.first) - 1] + d_a[std::min(s.first, e.first) - 1],
+                }) + std::min({
+                    std::abs(d_b[s.second - 1] - d_b[e.second - 1]),
+                    d_b[m - 1] - d_b[std::max(s.second, e.second) - 1] + d_b[std::min(s.second, e.second) - 1],
+                })
+             << endl;
+    }
+
+    return 0;
+}