import java.io.IOException; import java.util.Arrays; import java.util.InputMismatchException; public class Main { long[][] dp; long combi(int n, int k) { if (k == 0 || n == k) { return 1; } if (n < 0 || k < 0) { return 0; } if (0 <= dp[n][k]) { return dp[n][k]; } return combi(n - 1, k) + combi(n - 1, k - 1); } void run() { MyScanner sc = new MyScanner(); int[] k = new int['z' - 'a' + 1]; int n = k.length; for (int i = 0; i < n; i++) { k[i] = sc.nextInt(); } long ans = 1; char[] hello = "hewrd".toCharArray(); for (int i = 0; i < hello.length; i++) { ans *= k[hello[i] - 'a']; } long max = 0; dp = new long[101][101]; for (int i = 0; i < 101; i++) { Arrays.fill(dp[i], -1); } for (int l = 2; l < k['l' - 'a']; l++) { for (int o = 1; o < k['o' - 'a']; o++) { long tmp = 1; tmp *= combi(l, 2); tmp *= combi(k['l' - 'a'] - l, 1); tmp *= combi(o, 1); tmp *= combi(k['o' - 'a'] - o, 1); max = Math.max(max, tmp); } } ans *= max; System.out.println(max); } public static void main(String[] args) { new Main().run(); } public void mapDebug(int[][] a) { System.out.println("--------map display---------"); for (int i = 0; i < a.length; i++) { for (int j = 0; j < a[i].length; j++) { System.out.printf("%3d ", a[i][j]); } System.out.println(); } System.out.println("----------------------------" + '\n'); } class MyScanner { int read() { try { return System.in.read(); } catch (IOException e) { throw new InputMismatchException(); } } boolean isSpaceChar(int c) { return c == ' ' || c == '\n' || c == '\r' || c == '\t' || c == -1; } boolean isEndline(int c) { return c == '\n' || c == '\r' || c == -1; } int nextInt() { return Integer.parseInt(next()); } int[] nextIntArray(int n) { int[] array = new int[n]; for (int i = 0; i < n; i++) array[i] = nextInt(); return array; } long nextLong() { return Long.parseLong(next()); } long[] nextLongArray(int n) { long[] array = new long[n]; for (int i = 0; i < n; i++) array[i] = nextLong(); return array; } double nextDouble() { return Double.parseDouble(next()); } double[] nextDoubleArray(int n) { double[] array = new double[n]; for (int i = 0; i < n; i++) array[i] = nextDouble(); return array; } String next() { int c = read(); while (isSpaceChar(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isSpaceChar(c)); return res.toString(); } String[] nextStringArray(int n) { String[] array = new String[n]; for (int i = 0; i < n; i++) array[i] = next(); return array; } String nextLine() { int c = read(); while (isEndline(c)) c = read(); StringBuilder res = new StringBuilder(); do { res.appendCodePoint(c); c = read(); } while (!isEndline(c)); return res.toString(); } } }