제출 #905943

#제출 시각아이디문제언어결과실행 시간메모리
905943Amirreza_Fakhri공장들 (JOI14_factories)C++17
컴파일 에러
0 ms0 KiB
// In the name of the God #include "factories.h" #include <bits/stdc++.h> #define ll long long #define int long long #define pb push_back #define F first #define S second #define mp make_pair #define pii pair <int, int> #define smin(x, y) (x) = min((x), (y)) #define smax(x, y) (x) = max((x), (y)) #define all(x) (x).begin(), (x).end() using namespace std; const int inf = (1e9+7)*(1e9+7); const int mod = 998244353; const int maxn = 5e5+5; int n, sz[maxn], mn[maxn]; bool mark[maxn]; vector <pii> adj[maxn], c[maxn]; void dfs1(int v, int p) { sz[v] = 1; for (pii e : adj[v]) { int u = e.F; if (!mark[u] and u != p) { dfs1(u, v); sz[v] += sz[u]; } } } int dfs2(int v, int s, int p) { for (pii e : adj[v]) { int u = e.F; if (!mark[u] and u != p and sz[u] > s/2) return dfs2(u, s, v); } return v; } void dfs3(int v, int h, int p, int b) { c[v].pb(mp(b, h)); for (pii e : adj[v]) { int u = e.F; if (!mark[u] and u != p) dfs3(u, h+e.S, v, b); } } void cd(int v) { dfs1(v, v); v = dfs2(v, sz[v], v); dfs3(v, 0, v, v); mark[v] = 1; for (pii e : adj[v]) { int u = e.F; if (!mark[u]) cd(u); } } void Init(int N, int A[], int B[], int D[]) { n = N; for (int i = 0; i < n-1; i++) { adj[A[i]].pb(mp(B[i], D[i])); adj[B[i]].pb(mp(A[i], D[i])); } cd(0); fill(mn, mn+n, inf); } long long Query(int S, int X[], int T, int Y[]) { int ans = inf; for (int i = 0; i < S; i++) { int v = X[i]; for (pii p : c[v]) smin(mn[p.F], p.S); } for (int i = 0; i < T; i++) { int v = Y[i]; for (pii p : c[v]) smin(ans, mn[p.F]+p.S); } for (int i = 0; i < S; i++) { int v = X[i]; for (pii p : c[v]) mn[p.F] = inf; } return ans; } // int32_t main() { // ios::sync_with_stdio(0); cin.tie(0); cout.tie(0); // cin >> n >> q; // for (int i = 0; i < n-1; i++) { // int v, u, w; cin >> v >> u >> w; // adj[v].pb(mp(u, w)); // adj[u].pb(mp(v, w)); // } // cd(0); // fill(mn, mn+n, inf); // while (q--) { // int s, t, ans = inf; cin >> s >> t; // while (s--) { // int v; cin >> v; // for (pii p : c[v]) smin(mn[p.F], p.S); // vec.pb(v); // } // while (t--) { // int v; cin >> v; // for (pii p : c[v]) smin(ans, mn[p.F]+p.S); // } // for (int v : vec) { // for (pii p : c[v]) mn[p.F] = inf; // } // vec.clear(); // cout << ans << '\n'; // } // return 0; // }

컴파일 시 표준 에러 (stderr) 메시지

/usr/bin/ld: /tmp/cclu9rNO.o: in function `main':
grader.cpp:(.text.startup+0x37d): undefined reference to `Init(int, int*, int*, int*)'
/usr/bin/ld: grader.cpp:(.text.startup+0x412): undefined reference to `Query(int, int*, int, int*)'
collect2: error: ld returned 1 exit status