結果
問題 | No.160 最短経路のうち辞書順最小 |
ユーザー | Konton7 |
提出日時 | 2020-04-03 00:21:09 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 3,690 bytes |
コンパイル時間 | 2,372 ms |
コンパイル使用メモリ | 213,212 KB |
実行使用メモリ | 6,944 KB |
最終ジャッジ日時 | 2024-06-28 15:27:42 |
合計ジャッジ時間 | 3,498 ms |
ジャッジサーバーID (参考情報) |
judge4 / judge5 |
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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 | 2 ms
5,248 KB |
testcase_01 | AC | 2 ms
5,376 KB |
testcase_02 | AC | 2 ms
5,376 KB |
testcase_03 | AC | 3 ms
5,376 KB |
testcase_04 | AC | 5 ms
5,376 KB |
testcase_05 | AC | 7 ms
5,376 KB |
testcase_06 | AC | 11 ms
5,376 KB |
testcase_07 | WA | - |
testcase_08 | WA | - |
testcase_09 | AC | 3 ms
5,376 KB |
testcase_10 | WA | - |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | WA | - |
testcase_15 | WA | - |
testcase_16 | WA | - |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | AC | 4 ms
5,376 KB |
testcase_20 | AC | 4 ms
5,376 KB |
testcase_21 | WA | - |
testcase_22 | WA | - |
testcase_23 | WA | - |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | WA | - |
testcase_27 | AC | 2 ms
5,376 KB |
testcase_28 | WA | - |
testcase_29 | AC | 2 ms
5,376 KB |
ソースコード
#include <bits/stdc++.h> using namespace std; using ll = long long; using VI = vector<int>; using VL = vector<ll>; using VVI = vector<vector<int>>; using VVL = vector<vector<ll>>; using PII = std::pair<int, int>; using PLL = std::pair<ll, ll>; #define rep(i, n) for (int i = 0; i < (int)(n); i++) #define repr(i, n) for (int i = (int)(n)-1; i >= 0; i--) #define rep2(i, s, n) for (int i = (s); i < (int)(n); i++) #define rep3(i, s, n, d) for (int i = (s); i < (int)(n); i += (d)) #define allpt(v) (v).begin(), (v).end() #define allpt_c(v) (v).cbegin(), (v).cend() #define allpt_r(v) (v).rbegin(), (v).rend() const int mod = 1e9 + 7, mod2 = 998244353; const ll inf = 1e18; const string wsp = " "; const string tb = "\t"; const string rt = "\n"; template <typename T> void show1dvec(const vector<T> &v) { if (v.size() == 0) return; int n = v.size() - 1; rep(i, n) cout << v[i] << wsp; cout << v[n] << rt; ; return; } template <typename T> void show2dvec(const vector<vector<T>> &v) { int n = v.size(); rep(i, n) show1dvec(v[i]); } template <typename T, typename S> void show1dpair(const vector<pair<T, S>> &v) { int n = v.size(); rep(i, n) cout << v[i].first << wsp << v[i].second << rt; return; } template <typename T, typename S> void pairzip(const vector<pair<T, S>> &v, vector<T> &t, vector<T> &s) { int n = v.size(); rep(i, n) { t.push_back(v[i].first); s.push_back(v[i].second); } return; } template <typename T> void maxvec(vector<T> &v) { T s = v[0]; int n = v.size(); rep(i, n - 1) { if (s > v[i + 1]) { v[i + 1] = s; } s = v[i + 1]; } } template <typename T, typename S> bool myfind(T t, S s) { return find(t.cbegin(), t.cend(), s) != t.cend(); } bool check(int y, int x, int h, int w) { return 0 <= y && y < h && 0 <= x && x < w; } VL cumsum(const VL &v) { int s = 0; VL ret = {0}; rep(i, v.size()) { s += v[i]; ret.push_back(s); } return ret; } bool iskadomatsu(int a, int b, int c) { return (a != b && b != c && c != a) && ((a > b && b < c) || (a < b && b > c)); } void djkstra(int x, VI &beforepoint, VI &shortest, vector<vector<PII>> &connect) { vector<int> search = {x}; vector<int> new_search; shortest[x] = 0; int v, d; while (!search.empty()) { for (auto i : search) { for (auto j : connect[i]) { v = j.first, d = j.second; if (shortest[v] > d + shortest[i]) { shortest[v] = d + shortest[i]; beforepoint[v] = i; new_search.push_back(v); } else if (shortest[v] == d + shortest[i] && beforepoint[v] > i) beforepoint[v] = i; } } search.clear(); search = new_search; new_search.clear(); } } int main() { #ifdef DEBUG cout << "DEBUG MODE" << endl; ifstream in("input.txt"); //for debug cin.rdbuf(in.rdbuf()); //for debug #endif int n, m, s, g, a, b, c, q; cin >> n >> m >> s >> g; VI beforepoint(n, n), shortest(n, 1e9), ans{g}; vector<vector<PII>> connect(n); rep(i, m) { cin >> a >> b >> c; connect[a].push_back(make_pair(b, c)); connect[b].push_back(make_pair(a, c)); } djkstra(s, beforepoint, shortest, connect); q = g; while(beforepoint[q] != n) { ans.push_back(beforepoint[q]); q = beforepoint[q]; } reverse(allpt(ans)); show1dvec(ans); return 0; }