結果
問題 | No.1647 Travel in Mitaru city 2 |
ユーザー | keijak |
提出日時 | 2021-08-13 22:55:03 |
言語 | C++17 (gcc 12.3.0 + boost 1.83.0) |
結果 |
WA
|
実行時間 | - |
コード長 | 4,227 bytes |
コンパイル時間 | 2,239 ms |
コンパイル使用メモリ | 214,648 KB |
実行使用メモリ | 22,784 KB |
最終ジャッジ日時 | 2024-10-03 21:50:24 |
合計ジャッジ時間 | 11,766 ms |
ジャッジサーバーID (参考情報) |
judge5 / judge2 |
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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
6,820 KB |
testcase_01 | AC | 2 ms
6,816 KB |
testcase_02 | AC | 2 ms
6,816 KB |
testcase_03 | AC | 2 ms
6,820 KB |
testcase_04 | WA | - |
testcase_05 | AC | 2 ms
6,816 KB |
testcase_06 | WA | - |
testcase_07 | AC | 3 ms
6,816 KB |
testcase_08 | AC | 92 ms
20,872 KB |
testcase_09 | AC | 79 ms
19,048 KB |
testcase_10 | AC | 87 ms
20,780 KB |
testcase_11 | WA | - |
testcase_12 | WA | - |
testcase_13 | WA | - |
testcase_14 | AC | 96 ms
21,340 KB |
testcase_15 | AC | 96 ms
21,136 KB |
testcase_16 | AC | 91 ms
20,204 KB |
testcase_17 | WA | - |
testcase_18 | WA | - |
testcase_19 | WA | - |
testcase_20 | WA | - |
testcase_21 | WA | - |
testcase_22 | AC | 98 ms
21,760 KB |
testcase_23 | AC | 98 ms
21,888 KB |
testcase_24 | WA | - |
testcase_25 | WA | - |
testcase_26 | AC | 101 ms
22,012 KB |
testcase_27 | AC | 103 ms
22,016 KB |
testcase_28 | AC | 100 ms
22,780 KB |
testcase_29 | AC | 100 ms
22,576 KB |
testcase_30 | AC | 91 ms
20,480 KB |
testcase_31 | AC | 105 ms
22,656 KB |
testcase_32 | AC | 83 ms
18,688 KB |
testcase_33 | WA | - |
testcase_34 | AC | 102 ms
22,784 KB |
testcase_35 | AC | 93 ms
20,476 KB |
testcase_36 | AC | 100 ms
22,784 KB |
testcase_37 | AC | 103 ms
22,780 KB |
testcase_38 | AC | 86 ms
18,304 KB |
testcase_39 | WA | - |
testcase_40 | AC | 89 ms
18,044 KB |
testcase_41 | WA | - |
testcase_42 | AC | 87 ms
18,176 KB |
testcase_43 | AC | 2 ms
6,816 KB |
testcase_44 | AC | 6 ms
7,808 KB |
testcase_45 | WA | - |
testcase_46 | WA | - |
testcase_47 | WA | - |
testcase_48 | WA | - |
testcase_49 | WA | - |
testcase_50 | AC | 58 ms
13,056 KB |
ソースコード
#include <bits/stdc++.h> #define REP_(i, a_, b_, a, b, ...) \ for (int i = (a), END_##i = (b); i < END_##i; ++i) #define REP(i, ...) REP_(i, __VA_ARGS__, __VA_ARGS__, 0, __VA_ARGS__) #define ALL(x) std::begin(x), std::end(x) using i64 = long long; template<typename T, typename U> inline bool chmax(T &a, U b) { return a < b and ((a = std::move(b)), true); } template<typename T, typename U> inline bool chmin(T &a, U b) { return a > b and ((a = std::move(b)), true); } template<typename T> inline int ssize(const T &a) { return (int) std::size(a); } template<typename T> std::istream &operator>>(std::istream &is, std::vector<T> &a) { for (auto &x : a) is >> x; return is; } template<typename T, typename U> std::ostream &operator<<(std::ostream &os, const std::pair<T, U> &a) { return os << "(" << a.first << ", " << a.second << ")"; } template<typename Container> std::ostream &print_seq(const Container &a, std::string_view sep = " ", std::string_view ends = "\n", std::ostream &os = std::cout) { auto b = std::begin(a), e = std::end(a); for (auto it = std::begin(a); it != e; ++it) { if (it != b) os << sep; os << *it; } return os << ends; } template<typename T, typename = void> struct is_iterable : std::false_type {}; template<typename T> struct is_iterable<T, std::void_t<decltype(std::begin(std::declval<T>())), decltype(std::end(std::declval<T>()))>> : std::true_type { }; template<typename T, typename = std::enable_if_t< is_iterable<T>::value && !std::is_same<T, std::string_view>::value && !std::is_same<T, std::string>::value>> std::ostream &operator<<(std::ostream &os, const T &a) { return print_seq(a, ", ", "", (os << "{")) << "}"; } void print() { std::cout << "\n"; } template<class T> void print(const T &x) { std::cout << x << "\n"; } template<typename Head, typename... Tail> void print(const Head &head, Tail... tail) { std::cout << head << " "; print(tail...); } void read_from_cin() {} template<typename T, typename... Ts> void read_from_cin(T &value, Ts &...args) { std::cin >> value; read_from_cin(args...); } #define INPUT(type, ...) \ type __VA_ARGS__; \ read_from_cin(__VA_ARGS__) #ifdef MY_DEBUG #include "debug_dump.hpp" #else #define DUMP(...) #endif using namespace std; auto solve() -> optional<vector<int>> { INPUT(i64, H, W, n); vector<pair<int, int>> spots(n); vector<vector<int>> rows(H), cols(W); REP(i, n) { INPUT(int, x, y); --x, --y; spots[i] = {x, y}; rows[x].push_back(i); cols[y].push_back(i); } vector<int> searched(n, -1); vector<int> path; auto dfs = [&](auto &dfs, int v, int j) -> optional<int> { int x, y; tie(x, y) = spots[v]; if (j & 1) { for (int u : cols[y]) { if (searched[u] != -1) { if (ssize(path) - searched[u] >= 4) return searched[u]; continue; } searched[u] = j - 1; path.push_back(u); auto sub = dfs(dfs, u, j + 1); if (sub.has_value()) return sub; path.pop_back(); } } else { for (auto u : rows[x]) { if (searched[u] != -1) { if (ssize(path) - searched[u] >= 4) return searched[u]; continue; } searched[u] = j - 1; path.push_back(u); auto sub = dfs(dfs, u, j + 1); if (sub.has_value()) return sub; path.pop_back(); } } return nullopt; }; REP(v, n) { if (searched[v] != -1) continue; searched[v] = 0; path.clear(); path.push_back(v); auto res = dfs(dfs, v, 1); if (res.has_value()) { vector<int> ans; for (int j = res.value(); j < ssize(path); ++j) { ans.push_back(path[j] + 1); } if (ssize(ans) < 4) continue; return ans; } } return nullopt; } int main() { ios_base::sync_with_stdio(false), cin.tie(nullptr); cout << std::fixed << std::setprecision(15); int t = 1; REP(test_case, t) { auto ans = solve(); if (not ans) { print(-1); } else { auto &v = ans.value(); print(v.size()); //for (auto &x : v) ++x; print_seq(v); } } }