結果
問題 | No.1599 Hikyaku |
ユーザー | 👑 Nachia |
提出日時 | 2021-07-10 16:09:42 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,396 ms / 7,500 ms |
コード長 | 2,959 bytes |
コンパイル時間 | 1,019 ms |
コンパイル使用メモリ | 91,256 KB |
実行使用メモリ | 65,816 KB |
最終ジャッジ日時 | 2024-07-02 02:35:12 |
合計ジャッジ時間 | 42,190 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 | 199 ms
62,740 KB |
testcase_01 | AC | 244 ms
63,536 KB |
testcase_02 | AC | 253 ms
63,532 KB |
testcase_03 | AC | 231 ms
62,872 KB |
testcase_04 | AC | 1,262 ms
65,336 KB |
testcase_05 | AC | 506 ms
63,540 KB |
testcase_06 | AC | 1,243 ms
65,212 KB |
testcase_07 | AC | 560 ms
65,464 KB |
testcase_08 | AC | 1,396 ms
65,208 KB |
testcase_09 | AC | 414 ms
62,964 KB |
testcase_10 | AC | 509 ms
62,892 KB |
testcase_11 | AC | 352 ms
63,004 KB |
testcase_12 | AC | 447 ms
64,532 KB |
testcase_13 | AC | 340 ms
64,792 KB |
testcase_14 | AC | 192 ms
63,000 KB |
testcase_15 | AC | 210 ms
63,128 KB |
testcase_16 | AC | 508 ms
63,000 KB |
testcase_17 | AC | 1,244 ms
63,540 KB |
testcase_18 | AC | 1,258 ms
63,660 KB |
testcase_19 | AC | 1,358 ms
65,200 KB |
testcase_20 | AC | 1,396 ms
65,324 KB |
testcase_21 | AC | 1,370 ms
65,008 KB |
testcase_22 | AC | 1,382 ms
64,748 KB |
testcase_23 | AC | 1,366 ms
64,936 KB |
testcase_24 | AC | 1,361 ms
64,936 KB |
testcase_25 | AC | 1,377 ms
65,816 KB |
testcase_26 | AC | 1,149 ms
64,408 KB |
testcase_27 | AC | 767 ms
64,148 KB |
testcase_28 | AC | 845 ms
63,508 KB |
testcase_29 | AC | 544 ms
63,516 KB |
testcase_30 | AC | 328 ms
63,000 KB |
testcase_31 | AC | 193 ms
62,996 KB |
testcase_32 | AC | 194 ms
62,872 KB |
testcase_33 | AC | 197 ms
62,872 KB |
testcase_34 | AC | 661 ms
63,000 KB |
testcase_35 | AC | 967 ms
63,644 KB |
testcase_36 | AC | 1,310 ms
63,644 KB |
testcase_37 | AC | 1,286 ms
63,648 KB |
testcase_38 | AC | 1,299 ms
63,436 KB |
testcase_39 | AC | 1,287 ms
63,576 KB |
testcase_40 | AC | 1,321 ms
64,168 KB |
testcase_41 | AC | 151 ms
63,000 KB |
testcase_42 | AC | 188 ms
63,000 KB |
testcase_43 | AC | 154 ms
63,000 KB |
testcase_44 | AC | 518 ms
62,744 KB |
testcase_45 | AC | 514 ms
62,872 KB |
testcase_46 | AC | 666 ms
62,996 KB |
testcase_47 | AC | 682 ms
63,000 KB |
testcase_48 | AC | 1,250 ms
63,124 KB |
testcase_49 | AC | 199 ms
63,124 KB |
testcase_50 | AC | 358 ms
63,000 KB |
testcase_51 | AC | 513 ms
62,744 KB |
testcase_52 | AC | 470 ms
63,512 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 + dt[v]){ D[v][e] = d + dt[v]; Q.push(make_pair(D[v][e],make_pair(v,e))); } double nxd = dt[v]; int pv = v; for(int nxv=v+1; nxv<maxV; nxv++){ double t0 = d + nxd - max(d - dt[nxv], T[nxv][e]); //cout << "p = " << p << ", e = " << e << ", pv = " << pv << ", nxv = " << nxv << ", t0 = " << t0 << endl; if(t0 < 0) continue; t0 = min(t0,dt[pv]+dt[nxv]); double t = nxd - t0 * (V[nxv] - V[pv]) / (V[nxv] + V[pv]); nxd = t; pv = nxv; if(D[nxv][e] <= d+nxd) continue; D[nxv][e] = d+nxd; Q.push(make_pair(d+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;