From fbf896d210c528c7a8bd499a79c189c049f8424d Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Thu, 11 Mar 2021 23:05:14 +0800
Subject: import(solutions): Add problem 1230.

---
 works/solutions/acwing/1230.cpp | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)
 create mode 100644 works/solutions/acwing/1230.cpp

(limited to 'works')

diff --git a/works/solutions/acwing/1230.cpp b/works/solutions/acwing/1230.cpp
new file mode 100644
index 0000000..958cbdd
--- /dev/null
+++ b/works/solutions/acwing/1230.cpp
@@ -0,0 +1,36 @@
+#include <iostream>
+
+using ll = long long;
+
+const int M = 100010;
+
+int N, K;
+ll p;
+int c[M];
+ll result;
+
+int main() {
+  std::ios_base::sync_with_stdio(false);
+  std::cin.tie(nullptr);
+
+  std::cin >> N >> K;
+
+  c[0] = 1;
+
+  for (int i = 1; i <= N; i++) {
+    int a;
+    std::cin >> a;
+
+    p += a;
+
+    int r = p % K;
+
+    result += c[r];
+
+    c[r]++;
+  }
+
+  std::cout << result;
+
+  return 0;
+}
-- 
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