Submission #1249580

#TimeUsernameProblemLanguageResultExecution timeMemory
1249580FernandoJC07World Map (IOI25_worldmap)C++20
0 / 100
20 ms2632 KiB
//#include "worldmap" #include <vector> using namespace std; #define vi vector<int> #define vii vector<vector<int>> #define For(i, a, n) for(int i = a; i<n; ++i) #define pb push_back vi agg(int a, vii &adj){ vi res; for(int x: adj[a]){ res.pb(a); res.pb(x); } return res; } void dfs(int a, vii &adj, vi &vst, vii &mapa){ mapa.pb({a}); mapa.pb(agg(a, adj)); mapa.pb({a}); vst[a] = 1; for(int x: adj[a]){ if(vst[x]) continue; dfs(x, adj, vst, mapa); } } vii create_map(int N, int M, vi A, vi B){ vii adj(N+1); vi vst(N+1, 0); vii mapa; For(i, 0, M) {adj[A[i]].pb(B[i]); adj[B[i]].pb(A[i]);} dfs(1, adj, vst, mapa); int k = mapa.size(); For(i, 0, k){ int m = k-mapa[i].size(); while(m--){mapa[i].pb(mapa[i][0]);} } return mapa; }
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