oj.uz

답안 #136727

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
136727 2019-07-26T07:42:46 Z E869120 Wild Boar (JOI18_wild_boar) C++14
47 / 100
 18000 ms 110336 KB 
#include <iostream>
#include <tuple>
#include <queue>
#include <vector>
#include <cassert>
#include <algorithm>
#include <functional>
using namespace std;
#pragma warning (disable: 4996)

const int MAX_N = 2009;
const int MAX_CANDIDATE = 2;
const int MAX_PREV = 3;
const int MAX_V = 6;

int N, M, L, T, A[MAX_N], B[MAX_N], C[MAX_N], P[100009], cntv[MAX_N], forced[MAX_N];
vector<pair<int, long long>> G[MAX_N];
tuple<long long, int, int> dist[MAX_N][MAX_N][MAX_V];
pair<long long, int> dp[100009][2];

int cnt1[MAX_N][MAX_N], cnt2[MAX_N], cnt3[MAX_N];
tuple<long long, int, int> R[19]; int sz;

void hosei() {
	int dt = 0, kinds = 0;
	for (int i = 0; i < sz; i++) {
		int v1 = get<1>(R[i]), v2 = get<2>(R[i]);
		if (cnt1[v1][v2] >= 1) continue;
		if (cnt2[v1] >= MAX_PREV) continue;
		if (cnt3[v2] >= MAX_CANDIDATE) continue;
		R[dt] = R[i]; dt++;
		cnt1[v1][v2]++; cnt2[v1]++; cnt3[v2]++;
	}
	for (int i = 0; i < dt; i++) {
		int v1 = get<1>(R[i]), v2 = get<2>(R[i]);
		cnt1[v1][v2] = 0; cnt2[v1] = 0; cnt3[v2] = 0;
	}
	sz = dt;
}

void init(int pos) {
	for (int i = 1; i <= N; i++) {
		cntv[i] = -1; forced[i] = -(1 << 30);
		for (int j = 0; j < MAX_V; j++) { dist[pos][i][j] = make_tuple(1LL << 60, -1, -1); }
	}

	priority_queue<long long, vector<long long>, greater<long long>>Q;
	dist[pos][pos][0] = make_tuple(0, -1, -1);

	for (int i = 0; i < G[pos].size(); i++) {
		int to = G[pos][i].first; long long cost = G[pos][i].second;
		dist[pos][to][0] = make_tuple(cost, to, pos);
		Q.push(1LL * (cost << 11) + 1LL * to);
	}

	// 各 dist に対する上位 6 点を記録する

	while (!Q.empty()) {
		int cur = (Q.top() & 2047); Q.pop();
		if (forced[cur] == cntv[cur]) continue;
		cntv[cur] = forced[cur];

		for (int i = 0; i < G[cur].size(); i++) {
			int to = G[cur][i].first; long long cost = G[cur][i].second;

			sz = 0;
			for (int j = 0; j < MAX_V; j++) {
				if (get<0>(dist[pos][to][j]) != (1LL << 60)) { R[sz] = dist[pos][to][j]; sz++; }
			}

			for (int j = 0; j < MAX_V; j++) {
				if (get<2>(dist[pos][cur][j]) == to) continue;
				long long val = get<0>(dist[pos][cur][j]) + cost;
				long long v1 = get<1>(dist[pos][cur][j]);
				long long v2 = cur; if (v1 == -1) v1 = to;
				if (val < (1LL << 60)) { R[sz] = make_tuple(val, v1, v2); sz++; }
			}
			sort(R, R + sz); hosei();

			long long flag = (1LL << 60);
			for (int j = 0; j < min(sz, MAX_V); j++) {
				if (dist[pos][to][j] > R[j]) {
					flag = min(flag, get<0>(R[j]));
					flag = true;
					dist[pos][to][j] = R[j];
				}
			}
			if (flag < (1LL << 60)) {
				Q.push(1LL * (flag << 11) + 1LL * to);
				cntv[to] = flag;
			}
		}
	}
}

long long solve() {
	for (int i = 1; i <= L; i++) {
		dp[i][0] = make_pair(1LL << 60, -1);
		dp[i][1] = make_pair(1LL << 60, -1);
	}
	for (int i = 0; i < min(2, (int)G[P[1]].size()); i++) {
		dp[1][i] = make_pair(0LL, G[P[1]][i].first);
	}

	for (int t = 2; t <= L; t++) {
		vector<pair<long long, int>> vec;
		int from = P[t - 1], to = P[t];

		for (int j = 0; j < 2; j++) {
			if (dp[t - 1][j].first == (1LL << 60)) continue;
			for (int k = 0; k < MAX_V; k++) {
				if ((t >= 3 && dp[t - 1][j].second == get<1>(dist[from][to][k])) || get<0>(dist[from][to][k]) == (1LL << 60)) continue;
				vec.push_back(make_pair(dp[t - 1][j].first + get<0>(dist[from][to][k]), get<2>(dist[from][to][k])));
			}
		}
		sort(vec.begin(), vec.end());
		for (int j = 0; j < vec.size(); j++) {
			if (j == 0) dp[t][0] = vec[j];
			else if (vec[j].second != vec[j - 1].second) {
				dp[t][1] = vec[j]; break;
			}
		}
	}

	if (dp[L][0].first == (1LL << 60)) return -1LL;
	return dp[L][0].first;
}

int main() {
	scanf("%d%d%d%d", &N, &M, &T, &L);
	for (int i = 1; i <= M; i++) {
		scanf("%d%d%d", &A[i], &B[i], &C[i]);
		G[A[i]].push_back(make_pair(B[i], C[i]));
		G[B[i]].push_back(make_pair(A[i], C[i]));
	}
	for (int i = 1; i <= L; i++) scanf("%d", &P[i]);

	for (int i = 1; i <= N; i++) init(i);

	for (int i = 1; i <= T; i++) {
		int v1, v2; scanf("%d%d", &v1, &v2);
		P[v1] = v2;
		printf("%lld\n", solve());
	}
	return 0;
}

Compilation message

wild_boar.cpp:9:0: warning: ignoring #pragma warning  [-Wunknown-pragmas]
 #pragma warning (disable: 4996)
 
wild_boar.cpp: In function 'void hosei()':
wild_boar.cpp:25:14: warning: unused variable 'kinds' [-Wunused-variable]
  int dt = 0, kinds = 0;
              ^~~~~
wild_boar.cpp: In function 'void init(int)':
wild_boar.cpp:50:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
  for (int i = 0; i < G[pos].size(); i++) {
                  ~~^~~~~~~~~~~~~~~
wild_boar.cpp:63:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int i = 0; i < G[cur].size(); i++) {
                   ~~^~~~~~~~~~~~~~~
wild_boar.cpp: In function 'long long int solve()':
wild_boar.cpp:117:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (int j = 0; j < vec.size(); j++) {
                   ~~^~~~~~~~~~~~
wild_boar.cpp: In function 'int main()':
wild_boar.cpp:130:7: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  scanf("%d%d%d%d", &N, &M, &T, &L);
  ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:132:8: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   scanf("%d%d%d", &A[i], &B[i], &C[i]);
   ~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
wild_boar.cpp:136:36: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
  for (int i = 1; i <= L; i++) scanf("%d", &P[i]);
                               ~~~~~^~~~~~~~~~~~~
wild_boar.cpp:141:20: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result]
   int v1, v2; scanf("%d%d", &v1, &v2);
               ~~~~~^~~~~~~~~~~~~~~~~~

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 504 KB Output is correct

Subtask #2
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 6 ms 632 KB Output is correct
27 Correct 20 ms 5756 KB Output is correct
28 Correct 20 ms 5752 KB Output is correct
29 Correct 261 ms 5828 KB Output is correct
30 Correct 219 ms 5852 KB Output is correct
31 Correct 195 ms 5756 KB Output is correct
32 Correct 194 ms 5752 KB Output is correct
33 Correct 388 ms 7648 KB Output is correct
34 Correct 420 ms 7516 KB Output is correct
35 Correct 178 ms 7408 KB Output is correct
36 Correct 243 ms 7332 KB Output is correct
37 Correct 347 ms 7544 KB Output is correct
38 Correct 534 ms 9720 KB Output is correct
39 Correct 207 ms 9672 KB Output is correct
40 Correct 427 ms 9624 KB Output is correct
41 Correct 444 ms 9592 KB Output is correct
42 Correct 178 ms 11000 KB Output is correct
43 Correct 347 ms 12164 KB Output is correct
44 Correct 359 ms 12288 KB Output is correct
45 Correct 71 ms 15352 KB Output is correct

Subtask #3
0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 6 ms 632 KB Output is correct
27 Correct 20 ms 5756 KB Output is correct
28 Correct 20 ms 5752 KB Output is correct
29 Correct 261 ms 5828 KB Output is correct
30 Correct 219 ms 5852 KB Output is correct
31 Correct 195 ms 5756 KB Output is correct
32 Correct 194 ms 5752 KB Output is correct
33 Correct 388 ms 7648 KB Output is correct
34 Correct 420 ms 7516 KB Output is correct
35 Correct 178 ms 7408 KB Output is correct
36 Correct 243 ms 7332 KB Output is correct
37 Correct 347 ms 7544 KB Output is correct
38 Correct 534 ms 9720 KB Output is correct
39 Correct 207 ms 9672 KB Output is correct
40 Correct 427 ms 9624 KB Output is correct
41 Correct 444 ms 9592 KB Output is correct
42 Correct 178 ms 11000 KB Output is correct
43 Correct 347 ms 12164 KB Output is correct
44 Correct 359 ms 12288 KB Output is correct
45 Correct 71 ms 15352 KB Output is correct
46 Correct 799 ms 6060 KB Output is correct
47 Correct 6622 ms 32720 KB Output is correct
48 Correct 9765 ms 73124 KB Output is correct
49 Correct 9508 ms 110192 KB Output is correct
50 Correct 11209 ms 110336 KB Output is correct
51 Correct 9164 ms 110128 KB Output is correct
52 Execution timed out 18087 ms 75604 KB Time limit exceeded
53 Halted 0 ms 0 KB -

Subtask #4
0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 504 KB Output is correct
2 Correct 2 ms 504 KB Output is correct
3 Correct 2 ms 376 KB Output is correct
4 Correct 2 ms 504 KB Output is correct
5 Correct 2 ms 504 KB Output is correct
6 Correct 2 ms 504 KB Output is correct
7 Correct 2 ms 504 KB Output is correct
8 Correct 2 ms 504 KB Output is correct
9 Correct 2 ms 504 KB Output is correct
10 Correct 2 ms 504 KB Output is correct
11 Correct 2 ms 504 KB Output is correct
12 Correct 2 ms 476 KB Output is correct
13 Correct 2 ms 504 KB Output is correct
14 Correct 3 ms 504 KB Output is correct
15 Correct 2 ms 504 KB Output is correct
16 Correct 2 ms 504 KB Output is correct
17 Correct 2 ms 504 KB Output is correct
18 Correct 2 ms 504 KB Output is correct
19 Correct 2 ms 504 KB Output is correct
20 Correct 2 ms 504 KB Output is correct
21 Correct 2 ms 504 KB Output is correct
22 Correct 2 ms 504 KB Output is correct
23 Correct 2 ms 504 KB Output is correct
24 Correct 2 ms 376 KB Output is correct
25 Correct 2 ms 504 KB Output is correct
26 Correct 6 ms 632 KB Output is correct
27 Correct 20 ms 5756 KB Output is correct
28 Correct 20 ms 5752 KB Output is correct
29 Correct 261 ms 5828 KB Output is correct
30 Correct 219 ms 5852 KB Output is correct
31 Correct 195 ms 5756 KB Output is correct
32 Correct 194 ms 5752 KB Output is correct
33 Correct 388 ms 7648 KB Output is correct
34 Correct 420 ms 7516 KB Output is correct
35 Correct 178 ms 7408 KB Output is correct
36 Correct 243 ms 7332 KB Output is correct
37 Correct 347 ms 7544 KB Output is correct
38 Correct 534 ms 9720 KB Output is correct
39 Correct 207 ms 9672 KB Output is correct
40 Correct 427 ms 9624 KB Output is correct
41 Correct 444 ms 9592 KB Output is correct
42 Correct 178 ms 11000 KB Output is correct
43 Correct 347 ms 12164 KB Output is correct
44 Correct 359 ms 12288 KB Output is correct
45 Correct 71 ms 15352 KB Output is correct
46 Correct 799 ms 6060 KB Output is correct
47 Correct 6622 ms 32720 KB Output is correct
48 Correct 9765 ms 73124 KB Output is correct
49 Correct 9508 ms 110192 KB Output is correct
50 Correct 11209 ms 110336 KB Output is correct
51 Correct 9164 ms 110128 KB Output is correct
52 Execution timed out 18087 ms 75604 KB Time limit exceeded
53 Halted 0 ms 0 KB -