Add 14579.cpp

Hiyabye · Mar 12, 2024 · c60e59b · c60e59b
1 parent eee512a
commit c60e59b
Showing 1 changed file with 21 additions and 0 deletions.
diff --git a/14xxx/14579.cpp b/14xxx/14579.cpp
@@ -0,0 +1,21 @@
+#include <iostream>
+#define MOD 14579
+using namespace std;
+
+void solve(void) {
+  int a, b; cin >> a >> b;
+
+  int ans = 1;
+  for (int i=a; i<=b; i++) {
+    ans = ans * (i*(i+1)/2 % MOD) % MOD;
+  }
+  cout << ans;
+}
+
+int main(void) {
+  ios::sync_with_stdio(false);
+  cin.tie(nullptr);
+
+  solve();
+  return 0;
+}