done 3 sorting problems

CSES - CSES Problem Set/Introducotry_Problems/Trailing_Zeros.cpp

@@ -0,0 +1,16 @@
+//  Trailing Zeros
+
+#include<bits/stdc++.h>
+
+using namespace std;
+using ll = long long;
+
+int main() {
+    int count = 0;
+    ll n; cin >> n;
+    for (int i = 1; i <= 15; i++) {
+        count += n / pow(5, i);
+    }
+    cout << count;
+    return 0;
+}