제출 #1206775

#제출 시각아이디문제언어결과실행 시간메모리
1206775HappyCapybara가장 긴 여행 (IOI23_longesttrip)C++17
60 / 100
260 ms416 KiB
#include "longesttrip.h" #include<bits/stdc++.h> using namespace std; vector<int> longest_trip(int N, int D){ vector<int> p; vector<bool> in(N, false); p.push_back(0); in[0] = true; bool rev = false; while (true){ int cur = p.back(); for (int i=0; i<N; i++){ if (in[i]) continue; if (are_connected({p.back()}, {i})){ p.push_back(i); in[i] = true; break; } } if (cur == p.back()){ if (rev) break; rev = true; reverse(p.begin(), p.end()); } } for (int i=1; i<(int)p.size()-1; i++){ for (int j=0; j<N; j++){ if (in[j]) continue; if (are_connected({p[i]}, {j})){ vector<int> np; for (int ci=i+1; ci<p.size(); ci++) np.push_back(p[ci]); for (int ci=0; ci<=i; ci++) np.push_back(p[ci]); np.push_back(j); in[j] = true; for (int ci=0; ci<N; ci++){ if (!in[ci]) np.push_back(ci); } return np; } } } if (p.size() > N/2) return p; vector<int> np; for (int i=0; i<N; i++){ if (!in[i]) np.push_back(i); } return np; }
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