Submission #39284

#	Time	Username	Problem	Language	Result	Execution time	Memory
39284		UncleGrandpa925	Amusement Park (JOI17_amusement_park)	C++14	28 / 100	38 ms	6824 KiB

Joi

#include "Joi.h"
#include <bits/stdc++.h>
using namespace std;
#define sp ' '
#define endl '\n'
#define fi first
#define se second
#define mp make_pair
#define bit(x,y) ((x>>(y))&1LL)
#define NMAX 10000
#define MMAX 20000
#define MOVEMAX 20000

struct dsu {
	int par[NMAX + 5];
	dsu() {
		for (int i = 0; i < NMAX; i++) par[i] = i;
	}
	int find(int x) {
		if (par[x] == x) return x;
		return par[x] = find(par[x]);
	}
	void uni(int x, int y) {
		x = find(x); y = find(y);
		if (x != y) par[x] = y;
	}
} d;
int Time = 0; int sta[NMAX + 5], par[NMAX + 5];
vector<vector<int> > a(NMAX + 5);
void dfs(int u, int p) {
	sta[u] = ++Time;
	for (auto v : a[u]) {
		if (v == p) continue;
		par[v] = u;
		dfs(v, u);
	}
}
void makeTree(int N, int M, int A[], int B[]) {
	for (int i = 0; i < M; i++) {
		if (d.find(A[i]) != d.find(B[i])) {
			d.uni(A[i], B[i]);
			a[A[i]].push_back(B[i]);
			a[B[i]].push_back(A[i]);
		}
	}
	dfs(0, 0);
}
// end of the common part
void Joi(int N, int M, int A[], int B[], long long X, int T) {
	makeTree(N, M, A, B);
	for (int i = 0; i < N; i++)
		MessageBoard(i, bit(X, sta[i] % 60));
}

Ioi

#include "Ioi.h"
#include <bits/stdc++.h>
using namespace std;
#define sp ' '
#define endl '\n'
#define fi first
#define se second
#define mp make_pair
#define bit(x,y) ((x>>(y))&1LL)
#define NMAX 10000
#define MMAX 20000
#define MOVEMAX 20000

struct dsu {
	int par[NMAX + 5];
	dsu() {
		for (int i = 0; i < NMAX; i++) par[i] = i;
	}
	int find(int x) {
		if (par[x] == x) return x;
		return par[x] = find(par[x]);
	}
	void uni(int x, int y) {
		x = find(x); y = find(y);
		if (x != y) par[x] = y;
	}
} d;
int Time = 0; int sta[NMAX + 5], par[NMAX + 5];
vector<vector<int> > a(NMAX + 5);
int mark[60]; bool visited[NMAX + 5]; int rem;
void dfs(int u, int p) {
	sta[u] = ++Time;
	for (auto v : a[u]) {
		if (v == p) continue;
		par[v] = u;
		dfs(v, u);
	}
}
void makeTree(int N, int M, int A[], int B[]) {
	for (int i = 0; i < M; i++) {
		if (d.find(A[i]) != d.find(B[i])) {
			d.uni(A[i], B[i]);
			a[A[i]].push_back(B[i]);
			a[B[i]].push_back(A[i]);
		}
	}
	dfs(0, 0);
}
int Lab(int u) {
	return sta[u] % 60;
}
void dfs(int u, int root, int Z, int from, bool free) {
	if (mark[Lab(u)] == -1) {
		mark[Lab(u)] = Z; rem--;
		if (rem == 0) throw 1;
	}
	visited[u] = true;
	if (u == root) {
		int p = 0;
		for (int i = 0; i < a[u].size(); i++) {
			int v = a[u][i];
			if (v == from) {
				p = i; break;
			}
		}
		for (int i = p; i < a[u].size(); i++) {
			int v = a[u][i];
			if (v == par[u] || visited[v]) continue;
			dfs(v, root, Move(v), from, free);
		}
		for (int i = p; i >= 0; i--) {
			int v = a[u][i];
			if (v == par[u] || visited[v]) continue;
			dfs(v, root, Move(v), from, free);
		}
	}
	else {
		if (free) {
			for (int i = 0; i < a[u].size(); i++) {
				int v = a[u][i];
				if (v == par[u] || visited[v]) continue;
				dfs(v, root, Move(v), from, free);
			}
		}
		else {
			for (int i = a[u].size() - 1; i >= 0; i--) {
				int v = a[u][i];
				if (v == par[u] || visited[v]) continue;
				dfs(v, root, Move(v), from, free);
			}
		}
	}
	if (u != root) {
		Move(par[u]);
	}
	else {
		dfs(par[u], par[u], Move(par[u]), u, 0);
	}
}
long long Ioi(int N, int M, int A[], int B[], int P, int V, int T) {
	long long ret = 0;
	makeTree(N, M, A, B);
	memset(mark, -1, sizeof(mark)); rem = 60;
	try {
		dfs(P, P, V, P, 1);
	}
	catch (...) {
		for (int i = 0; i < 60; i++) {
			if (mark[i] == 1) ret += (1LL << i);
		}
	}
	return ret;
}

Compilation message (stderr)

Ioi.cpp: In function 'void dfs(int, int, int, int, bool)':
Ioi.cpp:60:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < a[u].size(); i++) {
                     ^
Ioi.cpp:66:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = p; i < a[u].size(); i++) {
                     ^
Ioi.cpp:79:22: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
    for (int i = 0; i < a[u].size(); i++) {
                      ^

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