結果
問題 | No.614 壊れたキャンパス |
ユーザー | tsutaj |
提出日時 | 2017-12-14 13:38:03 |
言語 | C++14 (gcc 12.3.0 + boost 1.83.0) |
結果 |
AC
|
実行時間 | 1,516 ms / 2,000 ms |
コード長 | 4,269 bytes |
コンパイル時間 | 1,976 ms |
コンパイル使用メモリ | 135,940 KB |
実行使用メモリ | 66,020 KB |
最終ジャッジ日時 | 2024-12-14 12:40:38 |
合計ジャッジ時間 | 11,304 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 | 7 ms
13,024 KB |
testcase_01 | AC | 7 ms
12,900 KB |
testcase_02 | AC | 7 ms
12,896 KB |
testcase_03 | AC | 6 ms
12,900 KB |
testcase_04 | AC | 6 ms
12,900 KB |
testcase_05 | AC | 6 ms
13,024 KB |
testcase_06 | AC | 5 ms
12,896 KB |
testcase_07 | AC | 6 ms
12,900 KB |
testcase_08 | AC | 610 ms
40,292 KB |
testcase_09 | AC | 1,516 ms
56,716 KB |
testcase_10 | AC | 564 ms
43,236 KB |
testcase_11 | AC | 669 ms
39,264 KB |
testcase_12 | AC | 753 ms
39,012 KB |
testcase_13 | AC | 704 ms
39,136 KB |
testcase_14 | AC | 666 ms
40,164 KB |
testcase_15 | AC | 475 ms
42,344 KB |
testcase_16 | AC | 635 ms
42,984 KB |
testcase_17 | AC | 453 ms
66,020 KB |
testcase_18 | AC | 555 ms
42,352 KB |
testcase_19 | AC | 459 ms
46,100 KB |
ソースコード
// 基本テンプレート #include <iostream> #include <iomanip> #include <cstdio> #include <string> #include <cstring> #include <deque> #include <list> #include <queue> #include <stack> #include <vector> #include <utility> #include <algorithm> #include <map> #include <set> #include <complex> #include <cmath> #include <limits> #include <cfloat> #include <climits> #include <ctime> #include <cassert> #include <numeric> #include <fstream> #include <functional> using namespace std; #define rep(i,a,n) for(int (i)=(a); (i)<(n); (i)++) #define repq(i,a,n) for(int (i)=(a); (i)<=(n); (i)++) #define repr(i,a,n) for(int (i)=(a); (i)>=(n); (i)--) #define int long long int template<typename T> void chmax(T &a, T b) {a = max(a, b);} template<typename T> void chmin(T &a, T b) {a = min(a, b);} template<typename T> void chadd(T &a, T b) {a = a + b;} typedef pair<int, int> pii; typedef long long ll; int dx[] = {0, 0, 1, -1}; int dy[] = {1, -1, 0, 0}; constexpr ll INF = 1001001001001001LL; constexpr ll MOD = 1000000007LL; struct Edge { int to_idx, to_height; }; struct Elem { int flr, cost; bool operator<(const Elem &x) const { return cost > x.cost; } }; bool exist[200010]; map< int, map<int, vector<Edge> > > edges; vector<int> in[200010], out[200010]; map<int, int> rec; vector<int> get_array(int idx, int val) { int idx_l = --upper_bound(in[idx].begin(), in[idx].end(), val) - in[idx].begin(); int idx_r = lower_bound(in[idx].begin(), in[idx].end(), val) - in[idx].begin(); int P = in[idx].size(); vector<int> cand; if(idx_l >= 0 && idx_l < P) cand.push_back(in[idx][idx_l]); if(idx_r >= 0 && idx_r < P) cand.push_back(in[idx][idx_r]); return cand; } signed main() { int N, M, K, S, T; cin >> N >> M >> K >> S >> T; in[1].push_back(S); rep(i,0,M) { int a, b, c; cin >> a >> b >> c; exist[a] = true; edges[a][b].push_back(Edge{a+1, c}); out[a].push_back(b); in[a+1].push_back(c); } int cnt = 0; repq(i,1,N) { sort(in[i].begin(), in[i].end()); sort(out[i].begin(), out[i].end()); in[i].erase(unique(in[i].begin(), in[i].end()), in[i].end()); out[i].erase(unique(out[i].begin(), out[i].end()), out[i].end()); cnt += exist[i]; } if(cnt != N-1) { cout << -1 << endl; return 0; } if(N == 1) { cout << abs(S - T) << endl; return 0; } rec[S] = 0; repq(i,1,N) { // floor, cost priority_queue<Elem> tmp; for(auto x : rec) tmp.push(Elem{x.first, x.second}); while(!tmp.empty()) { Elem cur = tmp.top(); tmp.pop(); int idx = lower_bound(in[i].begin(), in[i].end(), cur.flr) - in[i].begin(); int dd[] = {-1, 1}; // printf("cur.flr = %lld, idx = %lld\n", cur.flr, idx); rep(k,0,2) { int nidx = idx + dd[k]; if(nidx < 0 || nidx >= (int)in[i].size()) continue; int to = in[i][nidx]; // printf("cur = %lld, adjacent_elem = %lld\n", cur.flr, to); int diff = abs(cur.flr - to); if(!rec.count(to) || rec[to] > rec[cur.flr] + diff) { int ncost = rec[to] = rec[cur.flr] + diff; tmp.push(Elem{to, ncost}); } } } /* printf("index = %lld\n", i); for(auto x : rec) { printf("height = %lld, cost = %lld\n", x.first, x.second); } */ map<int, int> swp; if(i == N) continue; for(auto from : out[i]) { int cur_cost = INF; vector<int> cand = get_array(i, from); // for(auto point : cand) printf("candidate: %lld\n", point); for(auto point : cand) chmin(cur_cost, rec[point] + abs(point - from)); for(auto e : edges[i][from]) { int to = e.to_height; if(!swp.count(to) || swp[to] > cur_cost) { swp[to] = cur_cost; } } } swap(rec, swp); } int ans = INF; for(auto x : rec) chmin(ans, x.second + abs(x.first - T)); cout << ans << endl; return 0; }