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답안 #947009

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
947009 2024-03-15T10:08:29 Z mansur Amusement Park (JOI17_amusement_park) C++17
100 / 100
 23 ms 6672 KB 
#include "Joi.h"
#include<bits/stdc++.h>	

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define s second
#define f first
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int NN = 1e4;

int d[2][NN];
vector<int> g[NN];

int get(int x, int k, int n) {
	for (int i = 0; i < n; i++) d[k][i] = -1;
	queue<int> q;
	q.push(x);
	int mx = x;
	d[k][x] = 0;
	while (sz(q)) {
		x = q.front();
		q.pop();
		for (int to: g[x]) {
			if (d[k][to] == -1) {
				d[k][to] = d[k][x] + 1;
				q.push(to);
			}
		}
	}
	for (int i = 0; i < n; i++) {
		if (d[k][i] > d[k][mx]) {
			mx = i;
		}
	}
	return mx;
}

int cur, was[NN], dpt[NN];
vector<pii> s[NN];

void dfs(int u) {
    was[u] = 1;
	for (int to: g[u]) {
		if (was[to]) continue;
		dfs(to);
		dpt[u] = max(dpt[u], dpt[to] + 1);
		s[u].push_back({dpt[to], to});
	}
	sort(rall(s[u]));
}

ll x;

void mrk(int u) {
	MessageBoard(u, (x >> cur & 1));
	cur++;
	for (auto to: s[u]) mrk(to.s);		
}

void Joi(int N, int M, int A[], int B[], long long X, int T) {	
	x = X;
	for (int i = 0; i < M; i++) {
		g[A[i]].push_back(B[i]);
		g[B[i]].push_back(A[i]);
	}
	int a = get(0, 0, N);
	int b = get(a, 1, N);
	if (d[1][b] < 59) {
		dfs(0);
		mrk(0);
		return;
	}
	for (int i = 0; i < N; i++) {
		d[1][i] %= 60;
		MessageBoard(i, (X >> d[1][i] & 1));
	}
}

#include "Ioi.h"
#include<bits/stdc++.h>	

using namespace std;

#define all(a) a.begin(), a.end()                                                   
#define rall(a) a.rbegin(), a.rend()                 
#define sz(a) (int)a.size()
#define s second
#define f first
 
using ll = long long;
using pii = pair<int, int>;
using pll = pair<ll, ll>;

const int Nn = 1e4;

int dd[2][Nn], nxt[Nn], prv[Nn];
vector<int> gg[Nn];

int gett(int x, int k, int n) {
	for (int i = 0; i < n; i++) dd[k][i] = -1;
	queue<int> q;
	q.push(x);
	int s = x;
	dd[k][x] = 0;
	while (sz(q)) {
		x = q.front();
		q.pop();
		for (int to: gg[x]) {
			if (dd[k][to] == -1) {
				dd[k][to] = dd[k][x] + 1;
				prv[to] = x;
				q.push(to);
			}
		}
	}
	int mx = s;
	for (int i = 0; i < n; i++) {
		if (dd[k][i] > dd[k][mx]) {
			mx = i;
		}
	}
	int v = mx;
	while (mx != s) {
		nxt[prv[mx]] = mx;
		mx = prv[mx];	
	}
	return v;
}

vector<pii> h[Nn];
int dt[Nn], wes[Nn];
ll vl[Nn], cr, cnt;
ll ans, pr[Nn];

void dffs(int u) {
    wes[u] = 1;
	for (int to: gg[u]) {
		if (wes[to]) continue;
		pr[to] = u;
		dffs(to);
		dt[u] = max(dt[u], dt[to] + 1);
		h[u].push_back({dt[to], to});
	}
	sort(rall(h[u]));
}

void mrkk(int u) {
	vl[u] = cr++;
	for (auto to: h[u]) mrkk(to.s);
	reverse(all(h[u]));	
}

int vv, used[60], mv;

void git(int u) {
	if (vl[u] < 60 && !used[vl[u]]) {
		used[vl[u]] = 1;
		ans += (1ll << vl[u]) * vv;
		cnt++;
	}
	for (auto to: h[u]) {
		if (vl[to.s] < 60 && !used[vl[to.s]]) {
			mv++;
			if (mv > 960) cout << 5 / 0;
			vv = Move(to.s);
			git(to.s);
		}
	}
	if (cnt == 60) return;
	mv++;
	if (mv > 960) cout << 5 / 0;
	vv = Move(pr[u]);
	git(pr[u]);
}

void bfs(int u, int v) {
	queue<int> q;
	vector<int> d(Nn, -1), p(Nn);
	q.push(u);
	d[u] = 0;
	while (sz(q)) {
		int x = q.front();
		q.pop();
		if (x == v) break;
		for (int to: gg[x]) {
			if (d[to] == -1) {
				d[to] = d[x] + 1;
				p[to] = x;
				q.push(to);
			}
		}
	}
	vector<int> s;
	while (v != u) {
	 	s.push_back(v);
	 	v = p[v];
	}
	reverse(all(s));
	for (int x: s) {
		vv = Move(x);
	}
}

long long Ioi(int N, int M, int A[], int B[], int p, int v, int T) {
	for (int i = 0; i < M; i++) {
		gg[A[i]].push_back(B[i]);
		gg[B[i]].push_back(A[i]);
	}
	int a = gett(0, 0, N);
	int b = gett(a, 1, N);
	if (dd[1][b] < 59) {
		dffs(0);
		mrkk(0);
		vv = v;
		int ps = p;
		while (vl[ps] >= 60) ps = pr[ps];
		bfs(p, ps);		
		git(ps);
		return ans;		
	}
	for (int i = 1; i <= 60; i++) {
		ll b = (dd[1][p] % 60);
		if (v) ans += (1ll << b);
		bool ok = 0;
		for (int to: gg[p]) {
			if (dd[1][to] + 1 == dd[1][p]) {
				v = Move(to);
				p = to;
				ok = 1;
				break;
			}
		}  
		if (!ok) {
			ans = 0;                                                                                          			
			for (ll j = 0; j < 60; j++) {
				ans += (1ll << j) * v;
				v = Move(nxt[p]);
				p = nxt[p];
			}
			return ans;
		}
	}
	return ans;
}

Compilation message

Ioi.cpp: In function 'void git(int)':
Ioi.cpp:86:28: warning: division by zero [-Wdiv-by-zero]
   86 |    if (mv > 960) cout << 5 / 0;
      |                          ~~^~~
Ioi.cpp:93:26: warning: division by zero [-Wdiv-by-zero]
   93 |  if (mv > 960) cout << 5 / 0;
      |                        ~~^~~

Subtask #1
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1824 KB Output is correct
2 Correct 1 ms 1820 KB Output is correct
3 Correct 2 ms 1828 KB Output is correct
4 Correct 1 ms 1812 KB Output is correct
5 Correct 1 ms 1872 KB Output is correct
6 Correct 2 ms 1812 KB Output is correct
7 Correct 2 ms 1828 KB Output is correct
8 Correct 2 ms 1820 KB Output is correct
9 Correct 1 ms 1820 KB Output is correct
10 Correct 2 ms 1824 KB Output is correct
11 Correct 3 ms 2400 KB Output is correct
12 Correct 2 ms 1824 KB Output is correct
13 Correct 2 ms 1820 KB Output is correct
14 Correct 2 ms 1820 KB Output is correct
15 Correct 2 ms 1828 KB Output is correct
16 Correct 2 ms 1816 KB Output is correct
17 Correct 2 ms 1828 KB Output is correct
18 Correct 2 ms 1820 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 6164 KB Output is correct
2 Correct 23 ms 6352 KB Output is correct
3 Correct 19 ms 6408 KB Output is correct
4 Correct 13 ms 4164 KB Output is correct
5 Correct 11 ms 3392 KB Output is correct
6 Correct 12 ms 3452 KB Output is correct
7 Correct 11 ms 3392 KB Output is correct
8 Correct 11 ms 3388 KB Output is correct
9 Correct 11 ms 3384 KB Output is correct
10 Correct 13 ms 4416 KB Output is correct
11 Correct 14 ms 4156 KB Output is correct
12 Correct 11 ms 4132 KB Output is correct
13 Correct 11 ms 4128 KB Output is correct
14 Correct 11 ms 4140 KB Output is correct
15 Correct 12 ms 4916 KB Output is correct
16 Correct 15 ms 4696 KB Output is correct
17 Correct 12 ms 4288 KB Output is correct
18 Correct 14 ms 4400 KB Output is correct
19 Correct 13 ms 4152 KB Output is correct
20 Correct 9 ms 3388 KB Output is correct
21 Correct 9 ms 3388 KB Output is correct
22 Correct 11 ms 3392 KB Output is correct
23 Correct 11 ms 3388 KB Output is correct
24 Correct 10 ms 3392 KB Output is correct
25 Correct 10 ms 3392 KB Output is correct
26 Correct 10 ms 3392 KB Output is correct
27 Correct 10 ms 3380 KB Output is correct
28 Correct 11 ms 3392 KB Output is correct
29 Correct 9 ms 3360 KB Output is correct
30 Correct 10 ms 3372 KB Output is correct
31 Correct 1 ms 1824 KB Output is correct
32 Correct 1 ms 1828 KB Output is correct
33 Correct 2 ms 1824 KB Output is correct
34 Correct 2 ms 1812 KB Output is correct
35 Correct 1 ms 1812 KB Output is correct
36 Correct 1 ms 2264 KB Output is correct
37 Correct 1 ms 1868 KB Output is correct
38 Correct 2 ms 1824 KB Output is correct
39 Correct 1 ms 1812 KB Output is correct
40 Correct 1 ms 1824 KB Output is correct
41 Correct 2 ms 1824 KB Output is correct
42 Correct 2 ms 1824 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 1820 KB Output is correct
2 Correct 1 ms 1824 KB Output is correct
3 Correct 2 ms 1812 KB Output is correct
4 Correct 2 ms 1864 KB Output is correct
5 Correct 3 ms 1864 KB Output is correct
6 Correct 2 ms 1864 KB Output is correct
7 Correct 2 ms 1856 KB Output is correct
8 Correct 2 ms 1864 KB Output is correct
9 Correct 9 ms 3392 KB Output is correct
10 Correct 9 ms 3384 KB Output is correct
11 Correct 9 ms 3384 KB Output is correct
12 Correct 2 ms 1808 KB Output is correct
13 Correct 1 ms 1824 KB Output is correct
14 Correct 2 ms 1808 KB Output is correct
15 Correct 1 ms 1824 KB Output is correct

Subtask #4
55.0 / 55.0

# 결과 실행 시간 메모리 Grader output
1 Correct 19 ms 6412 KB Output is correct
2 Correct 20 ms 6088 KB Output is correct
3 Correct 22 ms 6244 KB Output is correct
4 Correct 16 ms 4700 KB Output is correct
5 Correct 11 ms 3452 KB Output is correct
6 Correct 10 ms 3384 KB Output is correct
7 Correct 10 ms 3392 KB Output is correct
8 Correct 12 ms 3384 KB Output is correct
9 Correct 13 ms 3384 KB Output is correct
10 Correct 11 ms 4164 KB Output is correct
11 Correct 11 ms 4164 KB Output is correct
12 Correct 11 ms 4392 KB Output is correct
13 Correct 11 ms 4136 KB Output is correct
14 Correct 11 ms 4140 KB Output is correct
15 Correct 13 ms 4660 KB Output is correct
16 Correct 13 ms 4676 KB Output is correct
17 Correct 13 ms 4152 KB Output is correct
18 Correct 13 ms 4144 KB Output is correct
19 Correct 13 ms 4160 KB Output is correct
20 Correct 9 ms 3392 KB Output is correct
21 Correct 8 ms 3396 KB Output is correct
22 Correct 9 ms 3384 KB Output is correct
23 Correct 11 ms 3384 KB Output is correct
24 Correct 9 ms 3384 KB Output is correct
25 Correct 10 ms 3380 KB Output is correct
26 Correct 11 ms 3392 KB Output is correct
27 Correct 11 ms 3392 KB Output is correct
28 Correct 11 ms 3388 KB Output is correct
29 Correct 9 ms 3364 KB Output is correct
30 Correct 10 ms 3364 KB Output is correct

Subtask #5
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 20 ms 6672 KB Output is correct
2 Correct 19 ms 6444 KB Output is correct
3 Correct 19 ms 6304 KB Output is correct
4 Correct 13 ms 4152 KB Output is correct
5 Correct 11 ms 3392 KB Output is correct
6 Correct 12 ms 3652 KB Output is correct
7 Correct 11 ms 3384 KB Output is correct
8 Correct 11 ms 3392 KB Output is correct
9 Correct 11 ms 3388 KB Output is correct
10 Correct 11 ms 4160 KB Output is correct
11 Correct 11 ms 4156 KB Output is correct
12 Correct 11 ms 4132 KB Output is correct
13 Correct 11 ms 4108 KB Output is correct
14 Correct 11 ms 4140 KB Output is correct
15 Correct 12 ms 4672 KB Output is correct
16 Correct 12 ms 4668 KB Output is correct
17 Correct 13 ms 4164 KB Output is correct
18 Correct 13 ms 4160 KB Output is correct
19 Correct 13 ms 4160 KB Output is correct
20 Correct 9 ms 3384 KB Output is correct
21 Correct 9 ms 3392 KB Output is correct
22 Correct 10 ms 3392 KB Output is correct
23 Correct 11 ms 3384 KB Output is correct
24 Correct 11 ms 3380 KB Output is correct
25 Correct 11 ms 3380 KB Output is correct
26 Correct 11 ms 3392 KB Output is correct
27 Correct 11 ms 3308 KB Output is correct
28 Correct 11 ms 3396 KB Output is correct
29 Correct 9 ms 3372 KB Output is correct
30 Correct 9 ms 3376 KB Output is correct
31 Correct 2 ms 1804 KB Output is correct
32 Correct 2 ms 1824 KB Output is correct
33 Correct 2 ms 1828 KB Output is correct
34 Correct 2 ms 1820 KB Output is correct
35 Correct 1 ms 1824 KB Output is correct
36 Correct 1 ms 1812 KB Output is correct
37 Correct 1 ms 1824 KB Output is correct
38 Correct 1 ms 1824 KB Output is correct
39 Correct 1 ms 1816 KB Output is correct
40 Correct 1 ms 1824 KB Output is correct
41 Correct 1 ms 1812 KB Output is correct
42 Correct 1 ms 1824 KB Output is correct