제출 #1059583

#제출 시각아이디문제언어결과실행 시간메모리
1059583shiomusubi496수천개의 섬 (IOI22_islands)C++17
22.75 / 100
1066 ms263084 KiB
#include "islands.h" #include <bits/stdc++.h> #define rep(i, n) for (int i = 0; i < (int)(n); ++i) #define rep2(i, a, b) for (int i = (int)(a); i < (int)(b); ++i) #define rrep(i, n) for (int i = (int)(n) - 1; i >= 0; --i) #define rrep2(i, a, b) for (int i = (int)(b) - 1; i >= (int)(a); --i) #define all(v) begin(v), end(v) #define rall(v) rbegin(v), rend(v) using namespace std; using ll = long long; template<class T, class U> bool chmin(T& a, const U& b) { return a > b ? a = b, true : false; } template<class T, class U> bool chmax(T& a, const U& b) { return a < b ? a = b, true : false; } struct edge { int to, idx; }; using Graph = vector<vector<edge>>; std::variant<bool, std::vector<int>> find_journey(int N, int M, std::vector<int> U, std::vector<int> V) { Graph G(N); rep (i, M) { G[U[i]].push_back({V[i], i}); } vector<int> memo; int cur = 0; while (1) { vector<edge> nxts; for (auto e : G[cur]) { if (memo.empty() || e.idx / 2 != memo.back() / 2) nxts.push_back(e); } if (nxts.size() == 0) return false; if (nxts.size() >= 2) { vector<int> ans; rep (i, memo.size()) ans.push_back(memo[i]); ans.push_back(nxts[0].idx); ans.push_back(nxts[0].idx ^ 1); ans.push_back(nxts[1].idx); ans.push_back(nxts[1].idx ^ 1); ans.push_back(nxts[0].idx ^ 1); ans.push_back(nxts[0].idx); ans.push_back(nxts[1].idx ^ 1); ans.push_back(nxts[1].idx); rrep (i, memo.size()) ans.push_back(memo[i]); return ans; } memo.push_back(nxts[0].idx); cur = nxts[0].to; } return false; }
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...
#Verdict Execution timeMemoryGrader output
Fetching results...