結果
問題 | No.1301 Strange Graph Shortest Path |
ユーザー | hedwig100 |
提出日時 | 2020-11-27 23:06:44 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
RE
|
実行時間 | - |
コード長 | 3,711 bytes |
コンパイル時間 | 2,112 ms |
コンパイル使用メモリ | 185,352 KB |
実行使用メモリ | 11,520 KB |
最終ジャッジ日時 | 2024-07-26 20:19:09 |
合計ジャッジ時間 | 9,724 ms |
ジャッジサーバーID (参考情報) |
judge1 / judge4 |
(要ログイン)
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 | 1 ms
6,816 KB |
testcase_01 | AC | 2 ms
6,944 KB |
testcase_02 | RE | - |
testcase_03 | RE | - |
testcase_04 | RE | - |
testcase_05 | RE | - |
testcase_06 | RE | - |
testcase_07 | RE | - |
testcase_08 | RE | - |
testcase_09 | RE | - |
testcase_10 | RE | - |
testcase_11 | RE | - |
testcase_12 | RE | - |
testcase_13 | RE | - |
testcase_14 | RE | - |
testcase_15 | RE | - |
testcase_16 | RE | - |
testcase_17 | RE | - |
testcase_18 | RE | - |
testcase_19 | RE | - |
testcase_20 | RE | - |
testcase_21 | RE | - |
testcase_22 | RE | - |
testcase_23 | RE | - |
testcase_24 | RE | - |
testcase_25 | RE | - |
testcase_26 | RE | - |
testcase_27 | RE | - |
testcase_28 | RE | - |
testcase_29 | RE | - |
testcase_30 | RE | - |
testcase_31 | RE | - |
testcase_32 | WA | - |
testcase_33 | RE | - |
testcase_34 | RE | - |
ソースコード
#include <bits/stdc++.h> using namespace std; #ifdef LOCAL_ void debug_out() {cerr << endl;} template<typename Head,typename... Tail> void debug_out(Head H,Tail... T){cerr << ' ' << H; debug_out(T...);} #define debug(...) cerr << 'L' << __LINE__ << " [" << #__VA_ARGS__ << "]:",debug_out(__VA_ARGS__) #define dump(x) cerr << 'L' << __LINE__ << " " << #x << " = " << (x) << endl; #else #define debug(...) (void(0)) #define dump(x) (void(0)) #endif #define rep(i,n) for (int i = 0; i < (int)(n); i ++) #define irep(i,n) for (int i = (int)(n) - 1;i >= 0;--i) using ll = long long; using PL = pair<ll,ll>; using P = pair<int,int>; constexpr int INF = 1000000000; constexpr long long HINF = 100000'00000'00000; constexpr long long MOD = 1000000007;// = 998244353; constexpr double EPS = 1e-4; constexpr double PI = 3.14159265358979; #pragma region Macros template<typename T1,typename T2> ostream &operator<<(ostream &os,const pair<T1,T2> &p) { os << '(' << p.first << ',' << p.second << ')'; return os; } template<typename T> ostream &operator<<(ostream &os,const vector<T> &v) { os << '['; for (auto &e:v) {os << e << ',';} os << ']'; return os; } // grid searh const int dy[8] = {-1,0,1,0,-1,-1,1,1}; const int dx[8] = {0,1,0,-1,-1,1,-1,1}; bool IN(int y,int x,int H,int W) {return (0 <= y)&&(y < H)&&(0 <= x)&&(x < W);} #pragma endregion vector<ll> dijkstra(int n, vector<vector<PL>> &G,int s) { vector<ll> dist(n,HINF); dist[s] = 0; priority_queue<PL,vector<PL>,greater<P>> q; q.push({0,s}); while (!q.empty()) { PL p = q.top(); q.pop(); ll d = p.first; int v = p.second; if (dist[v] < d) continue; for (PL p: G[v]) { int e = p.first; ll cost = p.second; if (dist[e] > dist[v] + cost) { dist[e] = dist[v] + cost; q.push({dist[e],e}); } } } return dist; } int main() { cin.tie(nullptr); ios::sync_with_stdio(false); cout << fixed << setprecision(20); int N,M; cin >> N >> M; vector<vector<P>> G(N); vector<int> C(N),D(N),used(N,-1); rep(i,M) { int a,b,c,d; cin >> a >> b >> c >> d; --a; --b; G[a].emplace_back(b,i); G[b].emplace_back(a,i); C[i] = c; D[i] = d; } vector<ll> dist(N,HINF); vector<int> before(N,-1); dist[0] = 0; priority_queue<PL,vector<PL>,greater<P>> q; q.push({0,0}); while (!q.empty()) { PL p = q.top(); q.pop(); ll d = p.first; int v = p.second; if (dist[v] < d) continue; for (PL p: G[v]) { int e = p.first; ll cost = C[p.second]; if (dist[e] > dist[v] + cost) { dist[e] = dist[v] + cost; before[e] = v; q.push({dist[e],e}); } } } int v = N-1; while (v > 0) { for (P p:G[v]) { if (p.first == before[v]) { used[p.second] = 1; break; } } v = before[v]; } vector<ll> dist2(N,HINF); dist2[N-1] = 0; q.push({0,N-1}); while (!q.empty()) { PL p = q.top(); q.pop(); ll d = p.first; int v = p.second; if (dist2[v] < d) continue; for (PL p: G[v]) { int e = p.first; ll cost; if (used[p.second] >= 0) cost = D[p.second]; else cost = C[p.second]; if (dist2[e] > dist2[v] + cost) { dist2[e] = dist2[v] + cost; q.push({dist2[e],e}); } } } cout << dist[N-1] + dist2[0] << '\n'; return 0; }