結果
問題 | No.281 門松と魔法(1) |
ユーザー |
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提出日時 | 2018-09-27 00:50:11 |
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 | 2,027 bytes |
コンパイル時間 | 1,735 ms |
コンパイル使用メモリ | 168,012 KB |
実行使用メモリ | 5,248 KB |
最終ジャッジ日時 | 2024-10-12 04:23:56 |
合計ジャッジ時間 | 3,352 ms |
ジャッジサーバーID (参考情報) |
judge2 / 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;using VS = vector<string>; using LL = long long;using VI = vector<int>; using VVI = vector<VI>;using PII = pair<int, int>; using PLL = pair<LL, LL>;using VL = vector<LL>; using VVL = vector<VL>;#define ALL(a) begin((a)),end((a))#define RALL(a) (a).rbegin(), (a).rend()#define SZ(a) int((a).size())#define SORT(c) sort(ALL((c)))#define RSORT(c) sort(RALL((c)))#define UNIQ(c) (c).erase(unique(ALL((c))), end((c)))#define FOR(i, s, e) for (int(i) = (s); (i) < (e); (i)++)#define FORR(i, s, e) for (int(i) = (s); (i) > (e); (i)--)#define debug(x) cerr << #x << ": " << x << endlconst int INF = 1e9; const LL LINF = 1e16;const LL MOD = 1000000007; const double PI = acos(-1.0);int DX[8] = { 0, 0, 1, -1, 1, 1, -1, -1 }; int DY[8] = { 1, -1, 0, 0, 1, -1, 1, -1 };/* ----- 2018/09/26 Problem: yukicoder 281 / Link: http://yukicoder.me/problems/no/281 ----- *//* ------問題-----------問題ここまで----- *//* -----解説等---------解説ここまで---- */LL ans = 0LL;int main() {cin.tie(0);ios_base::sync_with_stdio(false);LL D, h1, h2, h3;cin >> D >> h1 >> h2 >> h3;auto kadomatsu = [](LL D, LL h1, LL h2, LL h3) {if (h2 > h1 &&h2 > h3 && h1 != h3)return 1;if (h2 < h1 &&h2 < h3 && h1 != h3)return 1;return 0;};if (D == 0) {cout << (kadomatsu(D, h1, h2, h3) ? 0 : -1) << endl; return 0;}auto f = [&kadomatsu](LL D, LL h1, LL h2, LL h3) {if (h1 < h3)swap(h1, h3);if (h3 < 0)return -1LL;if (kadomatsu(D, h1, h2, h3))return 0LL;LL subA = h3 == 0 ? INF : (h2 - h3 + 1 + D - 1) / D;LL subB = (h1 - h2 + D) / D;if (max(h1 - subB * D, 0LL) == h3) {subB = h3 == 0 ? INF : (subB + 1);}subA = min(subA, subB);return subA == INF ? -1LL : subA;};if (h1 == h3) {LL res = f(D, h1, h2, h3 - D);cout << (res < 0 ? -1 : res + 1) << endl; return 0;}ans = f(D, h1, h2, h3);cout << ans << "\n";return 0;}