結果
| 問題 |
No.281 門松と魔法(1)
|
| コンテスト | |
| ユーザー |
kei
|
| 提出日時 | 2018-10-03 01:03:09 |
| 言語 | C++14 (gcc 13.3.0 + boost 1.87.0) |
| 結果 |
AC
|
| 実行時間 | 2 ms / 1,000 ms |
| コード長 | 3,155 bytes |
| コンパイル時間 | 1,766 ms |
| コンパイル使用メモリ | 172,312 KB |
| 実行使用メモリ | 5,248 KB |
| 最終ジャッジ日時 | 2024-10-12 10:10:10 |
| 合計ジャッジ時間 | 3,631 ms |
|
ジャッジサーバーID (参考情報) |
judge1 / judge5 |
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| ファイルパターン | 結果 |
|---|---|
| other | AC * 57 |
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/281>
問題文============================================================
=================================================================
解説=============================================================
================================================================
*/
bool kadomatsu(vector<ll>& H){
if(H[0] == H[1] || H[1] == H[2] || H[0] == H[2]) return false;
if(H[0] > H[1] && H[2] > H[1]) return true;
if(H[0] < H[1] && H[2] < H[1]) return true;
return false;
}
ll solve(){
ll res = LINF;
ll d; cin >> d;
vector<ll> H(3); for(auto& in:H) cin >> in;
if(kadomatsu(H)) return 0;
if(d == 0) return -1;
auto T = H;
{
//真ん中が一番高い場合
ll cnt = 0;
if(H[0] >= H[1]){
cnt += (H[0] - H[1] + d - 1)/d;
H[0] -= (H[0] - H[1] + d - 1)/d*d;
if(H[0] == H[1]){
cnt++;
H[0] -= d;
}
H[0] = max(0LL,H[0]);
}
if(H[2] >= H[1]){
cnt += (H[2] - H[1] + d - 1)/d;
H[2] -= (H[2] - H[1] + d - 1)/d*d;
if(H[2] == H[1]){
cnt++;
H[2] -= d;
}
H[2] = max(0LL,H[2]);
}
if(H[0] != 0 || H[2] != 0){
if(H[0] == H[2]){ cnt++; H[0]--;}
if(kadomatsu(H)) res = min(res,cnt);
}
}
H = T;
{
//真ん中が一番低い場合
ll cnt = 0;
if(H[0] == H[2]){
cnt++;
H[0] -= d;
H[0] = max(0LL,H[0]);
}
if(H[0] != 0 && H[2] != 0){
ll minH = min(H[0],H[2]);
if(minH <= H[1]){
cnt += (H[1] - minH + d - 1)/d;
H[1] -= (H[1] - minH + d - 1)/d*d;
if(H[1] == minH){
cnt++;
H[1] -= d;
}
H[1] = max(0LL,H[1]);
}
}
if(kadomatsu(H)) res = min(res,cnt);
}
if(res == LINF) res = -1;
return res;
}
int main(void) {
cin.tie(0); ios_base::sync_with_stdio(false);
cout << solve() << endl;
return 0;
}
kei