Submission #257548

#	Time	Username	Problem	Language	Result	Execution time	Memory
257548		islingr	Amusement Park (JOI17_amusement_park)	C++17	Compilation error	0 ms	0 KiB

Joi

#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 = 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 p[N], in[N], timer = 0;
void init(int u) {
	in[u] = timer;
	if (++timer == B) timer = 0;
	for (int v : g[u]) {
		g[v].erase(find(all(g[v]), u));
		p[v] = u; init(v);
	}
}

const ll U = (1ll << B) - 1;
int cnt; ll cur;
void dummy_move() { ++cnt; }
bool dummy_add(int u) {
	cur |= 1ll << in[u];
	return cur == U;
}
bool dummy_dfs(int u) {
	dummy_add(u);
	if (cur == U) return 1;
	for (int v : g[u]) {
		dummy_move();
		if (dummy_dfs(v)) return 1;
		dummy_move();
	}
	return 0;
}

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

ll 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);
	int s = -1;
	rep(i, 0, 2 * B + 1) {
		int u = P; cur = cnt = 0;
		rep(j, 0, i) dummy_add(u), dummy_move(), u = p[u];
		if (!dummy_dfs(u)) continue;
		if (cnt > 2 * B) continue;
		s = u; break;
	}
	assert(0 <= s);
	cur = 0;
	while (P != s) add(P, V), V = Move(p[P]), P = p[P];
	dfs(P, V);
	return x;
}

Ioi

Compilation message (stderr)

Joi.cpp: In function 'bool {anonymous}::dfs(int, ll)':
Joi.cpp:58:14: error: 'Move' was not declared in this scope
   if (dfs(v, Move(v))) return 1;
              ^~~~
Joi.cpp:59:3: error: 'Move' was not declared in this scope
   Move(u);
   ^~~~
Joi.cpp: In function 'll Ioi(int, int, int*, int*, int, int, int)':
Joi.cpp:84:32: error: 'Move' was not declared in this scope
  while (P != s) add(P, V), V = Move(p[P]), P = p[P];
                                ^~~~

/tmp/cc8ycCve.o: In function `main':
grader_ioi.cpp:(.text.startup+0x36a): undefined reference to `Ioi(int, int, int*, int*, int, int, int)'
collect2: error: ld returned 1 exit status