Submission #980132

#TimeUsernameProblemLanguageResultExecution timeMemory
980132vjudge1Longest Trip (IOI23_longesttrip)C++17
5 / 100
7 ms344 KiB
#include "longesttrip.h" using namespace std; #define pb push_back vector<int> longest_trip(int N, int D) { vector<int> ans; vector<int> v1; vector<int> v2; if(N==3){ v1={0}; v2={1}; if(are_connected(v1,v2)){ v1={0}; v2={2}; if(are_connected(v1,v2)){ ans={1,0,2}; return ans; } else{ ans={0,1,2}; return ans; } } else{ ans={0,2,1}; return ans; } } ans.pb(0); for(int i=1; i<N-1; ++i){ v1={ans[ans.size()-1]}; v2={i}; if(are_connected(v1, v2)){ ans.pb(i); } else{ i++; ans.pb(i); ans.pb(i-1); } } v1={ans[ans.size()-1]}; v2={N-1}; if(are_connected(v1, v2)){ ans.pb(N-1); } else{ int a=ans[ans.size()-1]; ans.pop_back(); int b=ans[ans.size()-1]; ans.pop_back(); ans.pb(N-1); ans.pb(b); ans.pb(a); } return ans; }
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