제출 #257390

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
257390		islingr	Amusement Park (JOI17_amusement_park)	C++17	28 / 100	36 ms	4380 KiB

Joi

#include "Joi.h"
#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (auto i = (a); i < (b); ++i)
#define all(x) begin(x), end(x)

using ll = long long;

namespace {
const int N = 1 << 14, B = 60;
int nxt[N];
int head(int u) { return nxt[u] != u ? nxt[u] = head(nxt[u]) : u; }
bool unite(int u, int v) {
  u = head(u); v = head(v);
  if (u == v) return 0;
  nxt[u] = v; return 1;
}

vector<int> g[N]; int timer = 0; ll x;
void dfs(int u, int p) {
  MessageBoard(u, x >> timer & 1);
  ++timer; if (timer == B) timer = 0;
  for (int v : g[u]) if (v != p) dfs(v, u);
}
}

void Joi(int n, int m, int a[], int b[], ll X, int t) {
  rep(u, 0, n) nxt[u] = u;
  rep(e, 0, m) {
    if (unite(a[e], b[e])) {
      g[a[e]].push_back(b[e]);
      g[b[e]].push_back(a[e]);
    }
  }
  x = X; dfs(0, -1);
}

Ioi

#include "Ioi.h"
#include <bits/stdc++.h>
using namespace std;

#define rep(i, a, b) for (auto i = (a); i < (b); ++i)
#define all(x) begin(x), end(x)

using ll = int64_t;

namespace {
const int N = 1 << 14, B = 60;
int nxt[N];
int head(int u) { return nxt[u] != u ? nxt[u] = head(nxt[u]) : u; }
bool unite(int u, int v) {
  u = head(u); v = head(v);
  if (u == v) return 0;
  nxt[u] = v; return 1;
}

vector<int> g[N];
int p[N], in[N], out[N], timer = 0;
void init(int u, int p) {
  in[u] = timer++ % B;
  for (int v : g[u]) if (v != p) init(v, u);
}

ll U = (1ll << B) - 1, cur = 0, x = 0;
bool dfs(int u, int p, ll z) {
  cur |= 1ll << in[u];
  x |= z << in[u];
  if (cur == U) return true;
  for (int v : g[u]) {
    if (v == p) continue;
    if (dfs(v, u, Move(v))) return true;
    Move(u);
  }
  return false;
}
}

long long Ioi(int n, int m, int a[], int b[], int P, int V, int T) {
  rep(u, 0, n) nxt[u] = u;
  rep(e, 0, m) {
    if (unite(a[e], b[e])) {
      g[a[e]].push_back(b[e]);
      g[b[e]].push_back(a[e]);
    }
  }
  init(0, -1);
  dfs(P, -1, V);
  return x;
}

컴파일 시 표준 에러 (stderr) 메시지

Ioi.cpp:21:18: warning: '{anonymous}::out' defined but not used [-Wunused-variable]
 int p[N], in[N], out[N], timer = 0;
                  ^~~
Ioi.cpp:21:5: warning: '{anonymous}::p' defined but not used [-Wunused-variable]
 int p[N], in[N], out[N], timer = 0;
     ^

• Subtask 1: 8 / 8
• Subtask 2: 10 / 10
• Subtask 3: 10 / 10
• Subtask 4: 0 / 55
• Subtask 5: 0 / 17