Create maxdiv.cpp

zukahai · Feb 2, 2022 · 69bea7f · 69bea7f
1 parent 23124e7
commit 69bea7f
Showing 1 changed file with 40 additions and 0 deletions.
diff --git a/THDC/maxdiv.cpp b/THDC/maxdiv.cpp
@@ -0,0 +1,40 @@
+#include <bits/stdc++.h>
+
+using namespace std;
+
+int a[300009], c[300009];
+
+int countK(int L, int R) {
+    return c[R] - c[L - 1];
+}
+
+int searchL(int R) {
+    int ans = R;
+    int l = 1, r = R;
+    while (l <= r) {
+        int m = (l + r) / 2;
+        if (countK(m, R) <= 1) {
+            ans = m;
+            r = m - 1;
+        } else {
+            l = m + 1;
+        }
+    } 
+    return ans;
+}
+
+int main() {
+    int ans = 0;
+    int n, k;
+    cin >> n >> k;
+    c[0] = 0;
+    for (int i = 1; i <= n; i++)
+        cin >> a[i];
+    for (int i = 1; i <= n; i++)
+        c[i] =  c[i - 1] + (a[i] % k == 0);
+    for (int R = 1; R <= n; R++) {
+        int L = searchL(R);
+        ans += R - L + 1;
+    }
+    cout << ans;
+}