const KIND = ['M','A','R','C','H'];
const SELECT = [	// もうちょっと賢い方法あるはず
  ['M','A','R'],
  ['M','A','C'],
  ['M','A','H'],
  ['M','R','C'],
  ['M','R','H'],
  ['M','C','H'],
  ['A','R','C'],
  ['A','C','H'],
  ['R','C','H']
];

// inputに入力データ全体が入る
function Main(input) {
  input = input.split(/\n/g);
  var N = input.shift();
  
  // 各頭文字の数を数える
  var count = {};
  input.map((name) => {
    var key = name[0];
    if(KIND.indexOf(key) < 0) return;
    count[key] = count[key] || 0;
    ++count[key];
  });
  //console.log(JSON.stringify(count));
  
  // 各頭文字の組み合わせを計算する
  var countFunc = (keys) => {
    var x = 0;
    keys.map((key) => {
        if(key in count) {
          x = x || 1;
          x *= count[key];
        } else {
          x = -1;
        }
    });
    return x > 0 ? x : 0;
  }

  console.log(SELECT
  	.map((keys) => { return countFunc(keys);})
    .reduce((p, c) => { return p + c;}, 0)
  );
}
//*この行以降は編集しないでください（標準入出力から一度に読み込み、Mainを呼び出します）
Main(require("fs").readFileSync("/dev/stdin", "utf8"));