new file: P11231.cpp

P11231.cpp

@@ -0,0 +1,19 @@
+#include <bits/stdc++.h>
+using namespace std;
+int n;
+int a;
+map<int, int> cou;
+int main()
+{
+    scanf("%d", &n);
+    for (int i = 1; i <= n; ++i)
+    {
+        scanf("%d", &a);
+        cou[a]++;
+    }
+    int maxx = 0;
+    for (auto k : cou)
+        maxx = max(maxx, k.second);
+    printf("%d\n", maxx);
+    return 0;
+}