Use struct instead of namespace

Changes

2 changed files (+15/-17)

• Graph/centroid.cpp
  • @@ -1,4 +1,4 @@
    - namespace centroid { + struct centroid { int sz[MN], cpar[MN]; bitset<MN> vis; void dfs(vector<int> * G, int u, int p = 0) {
• Graph/lca.cpp
  • @@ -1,17 +1,15 @@
    - int d[MN], L[MN][20]; - vector<int> G[MN]; - - void dfs(int u = 1, int p = 0) { - d[u] = d[p] + 1; - L[u][0] = p; - for (int i = 0; i < 18 && L[u][i]; i++) L[u][i + 1] = L[L[u][i]][i]; - for (auto& v : G[u]) if (v != p) dfs(v, u); - } - - int lca(int u, int v) { - if (d[u] > d[v]) swap(u, v); - for (int i = 18; i >= 0; i--) if (d[v] - (1 << i) >= d[u]) v = L[v][i]; - if (u == v) return u; - for (int i = 18; i >= 0; i--) if (L[u][i] && L[u][i] != L[v][i]) u = L[u][i], v = L[v][i]; - return L[u][0]; + struct lca { + int d[MN], L[MN][20]; + void dfs(vector<int> * G, int u = 1, int p = 0) { + d[u] = d[p] + 1, L[u][0] = p; + for (int i = 0; i < 18 && L[u][i]; i++) L[u][i + 1] = L[L[u][i]][i]; + for (auto& v : G[u]) if (v != p) dfs(G, v, u); + } + int lca(vector<int> * G, int u, int v) { + if (d[u] > d[v]) swap(u, v); + for (int i = 18; i >= 0; i--) if (d[v] - (1 << i) >= d[u]) v = L[v][i]; + if (u == v) return u; + for (int i = 18; i >= 0; i--) if (L[u][i] && L[u][i] != L[v][i]) u = L[u][i], v = L[v][i]; + return L[u][0]; + } }