//Don't have to see. start------------------------------------------
var read = require('readline').createInterface({
  input: process.stdin, output: process.stdout
});
var obj; var inLine = [];
read.on('line', function(input){inLine.push(input);});
read.on('close', function(){
  obj = init(inLine);
  console.error("\n");
  var start = Date.now();
  Main();
  var end = Date.now() - start;
  myerr("time : " + end + "ms");
  myerr("memory : " + Math.round(process.memoryUsage().heapTotal / 1024) + "KB");
});
function makeClone(obj){return JSON.parse(JSON.stringify(obj));}
function nextInt(){return myconv(next(),1);} function nextStrArray(){return myconv(next(),2);}
function nextIntArray(){return myconv(next(),4);} function nextCharArray(){return myconv(next(),6);}
function next(){return obj.next();} function hasNext(){return obj.hasNext();}
function init(input){  
  return {
    list : input, index : 0, max : input.length,
    hasNext : function(){return (this.index < this.max);},
    next : function(){if(this.hasNext()){return this.list[this.index++];}else{throw "ArrayIndexOutOfBoundsException ‚There is no more input";}}
  };
}
function myout(s){console.log(s);}
function myerr(s){console.error("debug:" + require("util").inspect(s,false,null));}
//param "no" is
//unknown or outlier : return i. 1: parseInt.
//2: split space. 4: split space and parseInt.
//6: split 1 character. 7: split 1 character and parseInt.
//8: join space. 9: join nextline. 0: join no character.
function myconv(i,no){try{switch(no){case 1:return parseInt(i);case 2:return i.split(" ");case 4:return i.split(" ").map(Number);case 6:return i.split("");case 7:return i.split("").map(Number);case 8:return i.join(" ");case 9:return i.join("\n");case 0:return i.join("");default:return i;}}catch(e){return i;}}

//Don't have to see. end------------------------------------------
function Main(){
  var one = nextIntArray();
  var N = one[0];
  var M = one[1];
  var list = new Array(M + 1);
  var unlockList = {};
  for(var i = 0; i < M; i++){
    var one = nextIntArray();
    var a = one[0];
    var b = one[1];
    var clist = nextIntArray();
    list[i + 1] = {
      cost : a,
      success : clist
    };
    for(var j = 0; j < b; j++){
      if(unlockList[clist[j]] == null){
        unlockList[clist[j]] = [];
      }
      unlockList[clist[j]].push(i + 1);
    }
  }
  //myerr(list);
  //myerr(unlockList);
  var output = 0;
  var used = new Set();
  for(var i = 1; i <= N; i++){
    if(!used.has(i)){
      var min = 100000000000;
      var index = -1;
      unlock = unlockList[i];
      if(unlock == null){
        myout(-1);
        return;
      }
      for(var j = 0; j < unlock.length; j++){
        if(min > list[unlock[j]].cost){
          min = list[unlock[j]].cost;
          index = unlock[j];
        }
      }
      output += min;
      for(var j = 0; j < list[index].success.length; j++){
        used.add(list[index].success[j]);
      }
    }
  }
  //myerr(used);
  myout(output);
}
