結果
| 問題 |
No.253 ロウソクの長さ
|
| コンテスト | |
| ユーザー |
kei
|
| 提出日時 | 2018-09-26 04:01:59 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 22 ms / 2,000 ms |
| コード長 | 2,253 bytes |
| コンパイル時間 | 1,769 ms |
| コンパイル使用メモリ | 167,560 KB |
| 実行使用メモリ | 25,476 KB |
| 平均クエリ数 | 28.44 |
| 最終ジャッジ日時 | 2024-07-17 01:56:05 |
| 合計ジャッジ時間 | 4,053 ms |
|
ジャッジサーバーID (参考情報) |
judge2 / judge3 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 36 |
ソースコード
#include "bits/stdc++.h"
using namespace std;
typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
const int INF = 1e9;
const ll LINF = 1e18;
template<class S,class T> ostream& operator << (ostream& out,const pair<S,T>& o){ out << "(" << o.first << "," << o.second << ")"; return out; }
template<class T> ostream& operator << (ostream& out,const vector<T> V){ for(int i = 0; i < V.size(); i++){ out << V[i]; if(i!=V.size()-1) out << " ";} return out; }
template<class T> ostream& operator << (ostream& out,const vector<vector<T> > Mat){ for(int i = 0; i < Mat.size(); i++) { if(i != 0) out << endl; out << Mat[i];} return out; }
template<class S,class T> ostream& operator << (ostream& out,const map<S,T> mp){ out << "{ "; for(auto it = mp.begin(); it != mp.end(); it++){ out << it->first << ":" << it->second; if(mp.size()-1 != distance(mp.begin(),it)) out << ", "; } out << " }"; return out; }
/*
<url:https://yukicoder.me/problems/no/253>
問題文============================================================
=================================================================
解説=============================================================
================================================================
*/
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
ll l = 10, r = 1000000000+1;
ll add = 0;
{
cout << "? " << 50 << endl;
ll rep; cin >> rep;
add++;
if(rep == 0){
cout << "! 50" << endl;
return 0;
}
if(rep == -1){
while(true){
cout << "? 0" << endl;
ll rep; cin >> rep;
if(rep == 0){
cout << "! " << add << endl;
return 0;
}
add++;
}
}
}
while(r-l>1){
ll m = (l+r)/2;
cout << "? " << m << endl;
ll rep; cin >> rep;
if(rep == 0){
cout << "! " << m+add << endl;
return 0;
}
if(rep >= 0){
l = m;
}else{
r = m;
}
if(l!=0)l--;
if(r!=0)r--;
add++;
}
cout << "! " << l+add << endl;
return 0;
}
kei