P5638 【CSGRound2】光骓者的荣耀

R52267925

Luogu/problem/P5638/P5638.cpp

@@ -0,0 +1,20 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int n, k;
+long long a, cnt, sum[1000005];
+
+int main() {
+    cin >> n >> k;
+    for (int i = 1; i < n; i++) {
+        cin >> a;
+        sum[i] = sum[i - 1] + a;
+    }
+    cnt = sum[k];
+    for (int i = 2; i <= n - k; i++) {
+        cnt = max(cnt, sum[i + k - 1] - sum[i - 1]);
+    }
+    cout << sum[n - 1] - cnt << endl;
+    return 0;
+}