Submission #1262958

#TimeUsernameProblemLanguageResultExecution timeMemory
1262958am_aadvikWorld Map (IOI25_worldmap)C++20
58 / 100
166 ms23900 KiB
#include <iostream> #include <vector> #include <cstring> #include <map> using namespace std; vector<int> g[45]; int res[1000][1000] = { 0 }, n, st = 500; vector<bool> vis(45), used(45); vector<int> dfs(int node, int si, int sj, int ei, int ej) { if (si == -1) { for (int i = st; i <= (st + n + n); ++i) res[i][st] = node; si = sj = ej = st, ei = st + n + n; } else { for (int i = (si - 1); i <= (ei + 1); ++i) res[i][sj - 1] = res[i][ej + 1] = node; for (int j = (sj - 1); j <= (ej + 1); ++j) res[si - 1][j] = res[ei + 1][j] = node; if (!used[node]) { for (int i = (si - 1); i <= (ei + 1); ++i) res[i][ej + 3] = node; int ci = si; for (auto x : g[node]) res[ci][ej + 2] = x, ci += 2; for (int i = si; i <= ei; ++i) if (!res[i][ej + 2]) res[i][ej + 2] = node; res[si - 1][ej + 2] = res[ei + 1][ej + 2] = node; --si, ++ei, --sj, ej += 3, used[node] = 1; } else --si, ++ei, --sj, ++ej; } bool l = 1; vis[node] = 1; for (auto x : g[node]) if (!vis[x]) { auto r = dfs(x, si, sj, ei, ej); si = r[0], sj = r[1], ei = r[2], ej = r[3]; for (int i = (si - 1); i <= (ei + 1); ++i) res[i][sj - 1] = res[i][ej + 1] = node; for (int j = (sj - 1); j <= (ej + 1); ++j) res[si - 1][j] = res[ei + 1][j] = node; if (!used[node]) { for (int i = (si - 1); i <= (ei + 1); ++i) res[i][ej + 3] = node; int ci = si; for (auto x : g[node]) res[ci][ej + 2] = x, ci += 2; for (int i = si; i <= ei; ++i) if (!res[i][ej + 2]) res[i][ej + 2] = node; res[si - 1][ej + 2] = res[ei + 1][ej + 2] = node; --si, ++ei, --sj, ej += 3, used[node] = 1; } else --si, ++ei, --sj, ++ej; l = 0; } return { si, sj, ei, ej }; } vector<vector<int>> create_map(int N, int m, vector<int> a, vector<int> b) { n = N; for (int i = 0; i < m; ++i) g[a[i]].push_back(b[i]), g[b[i]].push_back(a[i]); auto x = dfs(1, -1, -1, -1, -1); int mx = max(x[2] - x[0] + 1, x[3] - x[1] + 1); vector<vector<int>> ans(mx, vector<int>(mx, 1)); int si = x[0], sj = x[1]; for (int i = si; i <= x[2]; ++i) for (int j = sj; j <= x[3]; ++j) ans[i - si][j - sj] = res[i][j]; for (int i = 0; i <= n; ++i) g[i].clear(); memset(res, 0, sizeof(res)); vis.assign(45, 0), used.assign(45, 0); return ans; } /*int main() { int n, m; cin >> n >> m; vector<int> a(m), b(m); map<pair<int, int>, bool> mp; for (int i = 1; i <= n; ++i) mp[{i, i}] = 1; for (int i = 0; i < m; mp[{a[i], b[i]}] = 1, ++i) cin >> a[i] >> b[i]; auto res = create_map(n, m, a, b); cout << res.size() << endl; for (auto x : res) { for (auto y : x) cout << y << " "; cout << endl; } for (int i = 0; i < res.size(); ++i) for (int j = 0; j < res.size(); ++j) { if (i < (res.size() - 1)) if (!mp[{res[i + 1][j], res[i][j]}] && !mp[{res[i][j], res[i + 1][j]}]) { cout << "FAIL!"; return 0; } if (j < (res.size() - 1)) if (!mp[{res[i][j + 1], res[i][j]}] && !mp[{res[i][j], res[i][j + 1]}]) { cout << "FAIL!"; return 0; } } cout << "Success!" << endl; }*/
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