結果
| 問題 |
No.806 木を道に
|
| コンテスト | |
| ユーザー |
watarimaycry2
|
| 提出日時 | 2020-10-24 18:03:32 |
| 言語 | JavaScript (node v23.5.0) |
| 結果 |
AC
|
| 実行時間 | 1,420 ms / 2,000 ms |
| コード長 | 2,423 bytes |
| コンパイル時間 | 138 ms |
| コンパイル使用メモリ | 6,816 KB |
| 実行使用メモリ | 86,692 KB |
| 最終ジャッジ日時 | 2024-07-21 15:22:27 |
| 合計ジャッジ時間 | 11,968 ms |
|
ジャッジサーバーID (参考情報) |
judge3 / judge2 |
(要ログイン)
| ファイルパターン | 結果 |
|---|---|
| sample | AC * 2 |
| other | AC * 27 |
ソースコード
//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↑入力 ↓出力');
Main();
});
function makeClone(obj){return (obj instanceof Set) ? new Set(Array.from(obj)) : 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 N = nextInt();
var list = new Array(N);
for(var i = 0; i < N; i++){
list[i] = {
child : new Set(),
access : false
};
}
for(var i = 0; i < N - 1; i++){
var tmp = nextIntArray();
list[tmp[0] - 1].child.add(tmp[1] - 1);
list[tmp[1] - 1].child.add(tmp[0] - 1);
}
var output = 0;
var queue = [0];
list[0].access = true;
while(queue.length > 0){
var now = queue.shift();
output += Math.max(0, list[now].child.size - 2);
var child = Array.from(list[now].child);
for(var i = 0; i < child.length; i++){
if(!list[child[i]].access){
list[child[i]].access = true;
queue.push(child[i]);
}
}
}
myout(output);
}
watarimaycry2