import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; public class Main { public static boolean[][] done; public static Integer[][] memo; public static void main(String[] args) throws IOException { proconScan proScan = new proconScan(" "); proScan.scan(); Integer N = proScan.nextInteger(); Integer M = proScan.nextInteger(); Integer[][] costList = new Integer[N][N]; Integer[] ar = new Integer[N]; for (; M-- > 0;) { proScan.scan(); costList[proScan.nextInteger()][proScan.nextInteger()] = proScan.nextInteger(); } for (Integer integer = 0; integer < N; integer++) { ar[integer] = integer; } Integer ans = 0, i, j, temp; do { for (i = 0, temp = 0; i < N; i++) { for (j = i + 1; j < N; j++) { temp += costList[ar[i]][ar[j]] != null ? costList[ar[i]][ar[j]] : 0; } } ans = Math.max(ans, temp); } while (proconScan.nextPermutation(ar)); System.out.print(ans); proScan.proconEnd(); } } class proconScan { private BufferedReader br; private String inLine; private String[] inString; private Integer idx; private String splitChar; public proconScan() { br = new BufferedReader(new InputStreamReader(System.in)); idx = 0; splitChar = " "; } public proconScan(String split) { br = new BufferedReader(new InputStreamReader(System.in)); idx = 0; splitChar = split; } public void proconEnd() throws IOException { // TODO 自動生成されたメソッド・スタブ br.close(); } public String scan() throws IOException { idx = 0; inLine = br.readLine(); inString = inLine.split(splitChar, 0); return inLine; } public Integer scanInteger1() throws IOException { scan(); return Integer.parseInt(inString[0]); } public String backLine() { return inLine; } public String nextString() { return inString[idx++]; } public String[] getString() { return inString; } public Integer nextInteger() { Integer num; try { num = Integer.parseInt(inString[idx++]); } catch (NumberFormatException e) { num = null;// TODO: handle exception } return num; } public Integer[] getInteger() { Integer[] num = new Integer[this.getLen()]; for (int i = 0; i < this.getLen(); i++) { num[i] = Integer.parseInt(inString[i]); } return num; } public Float nextFloat() { Float num; try { num = Float.parseFloat(inString[idx++]); } catch (NumberFormatException e) { num = null;// TODO: handle exception } return num; } public Float[] getFloat() { Float[] num = new Float[this.getLen()]; for (int i = 0; i < this.getLen(); i++) { num[i] = Float.parseFloat(inString[i]); } return num; } public Integer getLen() { return inString.length; } public static boolean nextPermutation(Integer[] array) { Integer i = array.length - 1; while (i > 0 && array[i - 1] >= array[i]) i--; if (i <= 0) return false; Integer j = array.length - 1; while (array[j] <= array[i - 1]) j--; Integer temp = array[i - 1]; array[i - 1] = array[j]; array[j] = temp; j = array.length - 1; while (i < j) { temp = array[i]; array[i] = array[j]; array[j] = temp; i++; j--; } return true; } }