結果
問題 | No.1599 Hikyaku |
ユーザー | 👑 Nachia |
提出日時 | 2021-07-10 15:11:44 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 2,874 bytes |
コンパイル時間 | 1,030 ms |
コンパイル使用メモリ | 90,968 KB |
実行使用メモリ | 66,712 KB |
最終ジャッジ日時 | 2024-07-02 02:29:26 |
合計ジャッジ時間 | 39,270 ms |
ジャッジサーバーID (参考情報) |
judge3 / judge4 |
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テストケース
テストケース表示入力 | 結果 | 実行時間 実行使用メモリ |
---|---|---|
testcase_00 | AC | 188 ms
63,124 KB |
testcase_01 | AC | 244 ms
63,660 KB |
testcase_02 | AC | 250 ms
63,404 KB |
testcase_03 | AC | 232 ms
63,004 KB |
testcase_04 | AC | 1,063 ms
65,336 KB |
testcase_05 | AC | 482 ms
63,540 KB |
testcase_06 | WA | - |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 566 ms
62,964 KB |
testcase_10 | WA | - |
testcase_11 | AC | 394 ms
62,880 KB |
testcase_12 | WA | - |
testcase_13 | AC | 352 ms
64,408 KB |
testcase_14 | AC | 185 ms
62,996 KB |
testcase_15 | AC | 223 ms
63,128 KB |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | AC | 701 ms
64,408 KB |
testcase_28 | WA | - |
testcase_29 | AC | 504 ms
63,768 KB |
testcase_30 | WA | - |
testcase_31 | AC | 194 ms
62,996 KB |
testcase_32 | AC | 197 ms
62,748 KB |
testcase_33 | AC | 198 ms
62,876 KB |
testcase_34 | AC | 621 ms
62,872 KB |
testcase_35 | WA | - |
testcase_36 | WA | - |
testcase_37 | WA | - |
testcase_38 | WA | - |
testcase_39 | WA | - |
testcase_40 | WA | - |
testcase_41 | AC | 151 ms
62,872 KB |
testcase_42 | AC | 192 ms
62,996 KB |
testcase_43 | AC | 157 ms
63,004 KB |
testcase_44 | WA | - |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
testcase_49 | AC | 189 ms
62,748 KB |
testcase_50 | AC | 339 ms
62,872 KB |
testcase_51 | AC | 479 ms
62,872 KB |
testcase_52 | AC | 497 ms
63,640 KB |
ソースコード
#include <iostream> #include <vector> #include <queue> using namespace std; using ll = long long; using ull = unsigned long long; #define rep(i,n) for(int i=0; i<(n); i++) template<class T> using nega_queue = priority_queue<T,vector<T>,greater<T>>; const int INF = 1001001001; const int W = 600; const int H = 600; const int NV = W * H; // number of vertices const int maxV = 7; struct Start{ int id,v; }; int pos2id(int y,int x){ return y * W + x; } int X,Y; int N; vector<Start> hikyaku; double dt[maxV]; double V[maxV]; double T[maxV][NV]; vector<int> E[NV]; double D[maxV][NV]; int main(){ cin >> X >> Y; X--; Y--; cin >> N; rep(y,H) rep(x,W-1) E[pos2id(y,x)].push_back(pos2id(y,x+1)); rep(y,H) rep(x,W-1) E[pos2id(y,x+1)].push_back(pos2id(y,x)); rep(y,H-1) rep(x,W) E[pos2id(y,x)].push_back(pos2id(y+1,x)); rep(y,H-1) rep(x,W) E[pos2id(y+1,x)].push_back(pos2id(y,x)); hikyaku.resize(N); rep(i,N){ int x,y,v; cin >> x >> y >> v; x--; y--; v--; hikyaku[i] = { pos2id(y,x),v }; } rep(v,maxV) V[v] = 1+v; rep(v,maxV) dt[v] = 1000.0 / (1+v); rep(v,maxV) rep(i,NV) T[v][i] = INF; { vector<vector<int>> I(maxV); for(auto a : hikyaku){ I[a.v].push_back(a.id); T[a.v][a.id] = 0; } rep(v,maxV){ rep(i,I[v].size()){ int p = I[v][i]; for(int e : E[p]) if(T[v][e] >= INF - 1.0){ T[v][e] = T[v][p] + dt[v]; I[v].push_back(e); } } } } rep(v,maxV) rep(i,NV) D[v][i] = INF; nega_queue<pair<double,pair<int,int>>> Q; D[hikyaku[0].v][hikyaku[0].id] = 0.0; Q.push(make_pair(0.0,make_pair(hikyaku[0].v,hikyaku[0].id))); while(Q.size()){ double d = Q.top().first; int v = Q.top().second.first; int p = Q.top().second.second; Q.pop(); if(D[v][p] != d) continue; for(int nxv=v+1; nxv<maxV; nxv++) if(D[nxv][p] > max(T[nxv][p],d)){ D[nxv][p] = max(T[nxv][p],d); Q.push(make_pair(D[nxv][p],make_pair(nxv,p))); } for(int e : E[p]){ if(D[v][e] > D[v][p] + dt[v]){ D[v][e] = D[v][p] + dt[v]; Q.push(make_pair(D[v][e],make_pair(v,e))); } for(int nxv=v+1; nxv<maxV; nxv++){ double nxd = d + dt[v]; if(d < T[nxv][e] && T[nxv][e] <= d + dt[v]){ double t0 = T[nxv][e] - T[v][p]; double t = (1000.0+V[nxv]*t0) / (V[v]+V[nxv]); double cand = d + t * 2 - t0; nxd = min(nxd,max(d+dt[nxv],cand)); if(D[nxv][e] <= nxd) continue; D[nxv][e] = nxd; Q.push(make_pair(nxd,make_pair(nxv,e))); } } } } double ans = INF; rep(v,maxV) ans = min(ans,D[v][pos2id(Y,X)]); cout.precision(10); cout << fixed; cout << ans << endl; return 0; } struct ios_do_not_sync{ ios_do_not_sync(){ ios::sync_with_stdio(false); cin.tie(nullptr); } } ios_do_not_sync_inst;