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답안 #205603

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
205603 2020-02-29T09:35:28 Z youngyojun Wild Boar (JOI18_wild_boar) C++11
100 / 100
 11204 ms 826648 KB 
#include <bits/stdc++.h>
#define eb emplace_back
#define INFLL (0x3f3f3f3f3f3f3f3fll)
using namespace std;
typedef long long ll;
typedef pair<ll, int> pli;

const int MAXK = 100005;

ll dp[MAXK*3][7][7];

vector<int> G[2005];

ll F[2005][2005][7];
int FVA[2005][2005][7], FVB[2005][2005][7];
int FA[2005][2005][5], FB[2005][2005][5];

ll E[4005][4005];

int A[2005], B[2005], C[2005];
int D[MAXK];

int N, M, K, Q;

ll get() { return *min_element(dp[1][0], dp[1][6]+7); }

void cal(int i, int s, int e) {
	if(s == e) {
		for(int a = 0; a < 7; a++) for(int b = 0; b < 7; b++)
			dp[i][a][b] = a == b ? F[D[s]][D[s+1]][a] : INFLL;
		return;
	}
	int m = (s+e) >> 1;
	for(int a = 0; a < 7; a++) for(int b = 0; b < 7; b++) {
		ll &ret = dp[i][a][b]; ret = INFLL;
		for(int c = 0; c < 7; c++) for(int d = 0; d < 7; d++) {
			if(FVB[D[m]][D[m+1]][c] == FVA[D[m+1]][D[m+2]][d]) continue;
			ll t = dp[i<<1][a][c] + dp[i<<1|1][d][b];
			if(t < ret) ret = t;
		}
	}
}

void initSeg(int i, int s, int e) {
	if(s != e) {
		int m = (s+e) >> 1;
		initSeg(i<<1, s, m);
		initSeg(i<<1|1, m+1, e);
	}
	cal(i, s, e);
}

void upd(int i, int s, int e, int x1, int x2) {
	if(s == e) {
		cal(i, s, e);
		return;
	}
	int m = (s+e) >> 1;
	if(x1 <= m) upd(i<<1, s, m, x1, m < x2 ? x1 : x2);
	if(m < x2) upd(i<<1|1, m+1, e, x1 <= m ? x2 : x1, x2);
	cal(i, s, e);
}

int getSidx(int e) { return ((e&1) ? B : A)[e>>1]; }
int getEidx(int e) { return ((e&1) ? A : B)[e>>1]; }

int bfE[2005];
bitset<2005> chk;
void doDijk(ll E[], int se) {
	chk.reset();
	priority_queue<pli, vector<pli>, greater<pli>> PQ;
	fill(E, E+(M<<1), INFLL);
	E[se] = 0;
	PQ.emplace(0, se);
	for(ll dst; !PQ.empty();) {
		int eidx; tie(dst, eidx) = PQ.top(); PQ.pop();
		if(E[eidx] < dst) continue;
		int v = getEidx(eidx);
		if(chk[v]) {
			int e = bfE[v]^1;
			if(e != (eidx^1)) {
				ll ndst = dst + C[e>>1];
				if(ndst < E[e]) {
					E[e] = ndst;
					PQ.emplace(ndst, e);
				}
			}
		} else {
			chk[v] = true;
			bfE[v] = eidx;
			for(int e : G[v]) if(e != (eidx^1)) {
				ll ndst = dst + C[e>>1];
				if(E[e] <= ndst) continue;
				E[e] = ndst;
				PQ.emplace(ndst, e);
			}
		}
	}
}

int main() {
	ios_base::sync_with_stdio(0); cin.tie(0);

	cin >> N >> M >> Q >> K;
	for(int i = 0; i < M; i++) {
		cin >> A[i] >> B[i] >> C[i];
		if(A[i] > B[i]) swap(A[i], B[i]);
		G[A[i]].eb(i<<1);
		G[B[i]].eb(i<<1|1);
	}
	for(int i = 1; i <= K; i++) cin >> D[i];

	for(int i = M<<1; i--;) doDijk(E[i], i);

	for(int i = 1; i <= N; i++) for(int j = 1; j <= N; j++) if(j != i) {
		fill(F[i][j], F[i][j]+7, INFLL);
		fill(FA[i][j], FA[i][j]+5, -1);
		fill(FB[i][j], FB[i][j]+5, -1);

		// Case 0
		for(int e : G[i]) if(getEidx(e) == j) F[i][j][0] = C[e>>1];

		// Case 1
		int &a0 = FA[i][j][0], &b0 = FB[i][j][0], ea0 = -1, eb0 = -1;
		ll &c1 = F[i][j][1];
		for(int ea : G[i]) for(int eb : G[j]) {
			ll c = E[ea][eb^1] + C[ea>>1];
			if(c1 <= c) continue;
			a0 = getEidx(ea); b0 = getEidx(eb); c1 = c;
			ea0 = ea; eb0 = eb;
		}
		if(ea0 < 0) continue;
		eb0 ^= 1;

		// Case 2
		int &a1 = FA[i][j][1];
		ll &c2 = F[i][j][2];
		for(int ea : G[i]) if(ea != ea0) {
			ll c = E[ea][eb0] + C[ea>>1];
			if(c2 <= c) continue;
			a1 = getEidx(ea); c2 = c;
		}

		// Case 3
		int &b1 = FB[i][j][1];
		ll &c3 = F[i][j][3];
		for(int eb : G[j]) if(eb != (eb0^1)) {
			ll c = E[ea0][eb^1] + C[ea0>>1];
			if(c3 <= c) continue;
			b1 = getEidx(eb); c3 = c;
		}

		// Case 4
		int &a2 = FA[i][j][2], &b2 = FB[i][j][2];
		ll &c4 = F[i][j][4];
		for(int ea : G[i]) for(int eb : G[j]) if(ea != ea0 && eb != (eb0^1)) {
			ll c = E[ea][eb^1] + C[ea>>1];
			if(c4 <= c) continue;
			a2 = getEidx(ea); b2 = getEidx(eb); c4 = c;
		}
		if(a2 < 0) continue;

		// Case 5
		int &a3 = FA[i][j][3], &b3 = FB[i][j][3];
		ll &c5 = F[i][j][5];
		for(int ea : G[i]) for(int eb : G[j]) {
			int av = getEidx(ea), bv = getEidx(eb);
			if(av == a0 || bv == b2) continue;
			ll c = E[ea][eb^1] + C[ea>>1];
			if(c5 <= c) continue;
			a3 = av; b3 = bv; c5 = c;
		}

		// Case 6
		int &a4 = FA[i][j][4], &b4 = FB[i][j][4];
		ll &c6 = F[i][j][6];
		for(int ea : G[i]) for(int eb : G[j]) {
			int av = getEidx(ea), bv = getEidx(eb);
			if(av == a2 || bv == b0) continue;
			ll c = E[ea][eb^1] + C[ea>>1];
			if(c6 <= c) continue;
			a4 = av; b4 = bv; c6 = c;
		}
	}

	for(int i = 1; i <= N; i++) for(int j = 1; j <= N; j++) {
		int *fa = FA[i][j], *fb = FB[i][j];
		int *fva = FVA[i][j], *fvb = FVB[i][j];
		fva[0] = j; fvb[0] = i;
		fva[1] = fa[0]; fvb[1] = fb[0];
		fva[2] = fa[1]; fvb[2] = fb[0];
		fva[3] = fa[0]; fvb[3] = fb[1];
		fva[4] = fa[2]; fvb[4] = fb[2];
		fva[5] = fa[3]; fvb[5] = fb[3];
		fva[6] = fa[4]; fvb[6] = fb[4];
	}

	initSeg(1, 1, K-1);
	for(int a, b; Q--;) {
		cin >> a >> b;
		D[a] = b;
		upd(1, 1, K-1, a-1, a);
		ll t = get();
		if(INFLL <= t) cout << "-1\n";
		else cout << t << '\n';
	}
	return 0;
}

Subtask #1
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 632 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 632 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 6 ms 636 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 760 KB Output is correct
16 Correct 5 ms 760 KB Output is correct
17 Correct 5 ms 760 KB Output is correct
18 Correct 5 ms 760 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 792 KB Output is correct
21 Correct 5 ms 632 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 5 ms 632 KB Output is correct
24 Correct 5 ms 632 KB Output is correct
25 Correct 5 ms 632 KB Output is correct

Subtask #2
35.0 / 35.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 632 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 632 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 6 ms 636 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 760 KB Output is correct
16 Correct 5 ms 760 KB Output is correct
17 Correct 5 ms 760 KB Output is correct
18 Correct 5 ms 760 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 792 KB Output is correct
21 Correct 5 ms 632 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 5 ms 632 KB Output is correct
24 Correct 5 ms 632 KB Output is correct
25 Correct 5 ms 632 KB Output is correct
26 Correct 7 ms 1400 KB Output is correct
27 Correct 476 ms 106232 KB Output is correct
28 Correct 474 ms 106232 KB Output is correct
29 Correct 566 ms 110576 KB Output is correct
30 Correct 547 ms 110460 KB Output is correct
31 Correct 549 ms 110356 KB Output is correct
32 Correct 557 ms 110332 KB Output is correct
33 Correct 568 ms 113400 KB Output is correct
34 Correct 559 ms 113400 KB Output is correct
35 Correct 529 ms 113272 KB Output is correct
36 Correct 499 ms 113272 KB Output is correct
37 Correct 580 ms 113528 KB Output is correct
38 Correct 590 ms 117044 KB Output is correct
39 Correct 499 ms 116932 KB Output is correct
40 Correct 565 ms 117112 KB Output is correct
41 Correct 567 ms 116984 KB Output is correct
42 Correct 518 ms 119436 KB Output is correct
43 Correct 559 ms 121464 KB Output is correct
44 Correct 570 ms 121464 KB Output is correct
45 Correct 466 ms 126456 KB Output is correct

Subtask #3
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 632 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 632 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 6 ms 636 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 760 KB Output is correct
16 Correct 5 ms 760 KB Output is correct
17 Correct 5 ms 760 KB Output is correct
18 Correct 5 ms 760 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 792 KB Output is correct
21 Correct 5 ms 632 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 5 ms 632 KB Output is correct
24 Correct 5 ms 632 KB Output is correct
25 Correct 5 ms 632 KB Output is correct
26 Correct 7 ms 1400 KB Output is correct
27 Correct 476 ms 106232 KB Output is correct
28 Correct 474 ms 106232 KB Output is correct
29 Correct 566 ms 110576 KB Output is correct
30 Correct 547 ms 110460 KB Output is correct
31 Correct 549 ms 110356 KB Output is correct
32 Correct 557 ms 110332 KB Output is correct
33 Correct 568 ms 113400 KB Output is correct
34 Correct 559 ms 113400 KB Output is correct
35 Correct 529 ms 113272 KB Output is correct
36 Correct 499 ms 113272 KB Output is correct
37 Correct 580 ms 113528 KB Output is correct
38 Correct 590 ms 117044 KB Output is correct
39 Correct 499 ms 116932 KB Output is correct
40 Correct 565 ms 117112 KB Output is correct
41 Correct 567 ms 116984 KB Output is correct
42 Correct 518 ms 119436 KB Output is correct
43 Correct 559 ms 121464 KB Output is correct
44 Correct 570 ms 121464 KB Output is correct
45 Correct 466 ms 126456 KB Output is correct
46 Correct 185 ms 22368 KB Output is correct
47 Correct 3040 ms 274920 KB Output is correct
48 Correct 3018 ms 338680 KB Output is correct
49 Correct 2988 ms 396176 KB Output is correct
50 Correct 2983 ms 396216 KB Output is correct
51 Correct 3023 ms 396376 KB Output is correct
52 Correct 3416 ms 396516 KB Output is correct
53 Correct 3416 ms 396488 KB Output is correct
54 Correct 3461 ms 396352 KB Output is correct
55 Correct 3508 ms 396220 KB Output is correct
56 Correct 3469 ms 429636 KB Output is correct
57 Correct 3487 ms 465764 KB Output is correct
58 Correct 3466 ms 504984 KB Output is correct
59 Correct 3420 ms 547200 KB Output is correct
60 Correct 3369 ms 592264 KB Output is correct
61 Correct 3300 ms 640748 KB Output is correct
62 Correct 3167 ms 691308 KB Output is correct
63 Correct 3047 ms 745432 KB Output is correct
64 Correct 1659 ms 823820 KB Output is correct
65 Correct 1620 ms 823928 KB Output is correct

Subtask #4
38.0 / 38.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 632 KB Output is correct
2 Correct 5 ms 632 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 632 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 632 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 632 KB Output is correct
9 Correct 5 ms 632 KB Output is correct
10 Correct 5 ms 760 KB Output is correct
11 Correct 5 ms 760 KB Output is correct
12 Correct 6 ms 636 KB Output is correct
13 Correct 5 ms 760 KB Output is correct
14 Correct 5 ms 632 KB Output is correct
15 Correct 5 ms 760 KB Output is correct
16 Correct 5 ms 760 KB Output is correct
17 Correct 5 ms 760 KB Output is correct
18 Correct 5 ms 760 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 792 KB Output is correct
21 Correct 5 ms 632 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 5 ms 632 KB Output is correct
24 Correct 5 ms 632 KB Output is correct
25 Correct 5 ms 632 KB Output is correct
26 Correct 7 ms 1400 KB Output is correct
27 Correct 476 ms 106232 KB Output is correct
28 Correct 474 ms 106232 KB Output is correct
29 Correct 566 ms 110576 KB Output is correct
30 Correct 547 ms 110460 KB Output is correct
31 Correct 549 ms 110356 KB Output is correct
32 Correct 557 ms 110332 KB Output is correct
33 Correct 568 ms 113400 KB Output is correct
34 Correct 559 ms 113400 KB Output is correct
35 Correct 529 ms 113272 KB Output is correct
36 Correct 499 ms 113272 KB Output is correct
37 Correct 580 ms 113528 KB Output is correct
38 Correct 590 ms 117044 KB Output is correct
39 Correct 499 ms 116932 KB Output is correct
40 Correct 565 ms 117112 KB Output is correct
41 Correct 567 ms 116984 KB Output is correct
42 Correct 518 ms 119436 KB Output is correct
43 Correct 559 ms 121464 KB Output is correct
44 Correct 570 ms 121464 KB Output is correct
45 Correct 466 ms 126456 KB Output is correct
46 Correct 185 ms 22368 KB Output is correct
47 Correct 3040 ms 274920 KB Output is correct
48 Correct 3018 ms 338680 KB Output is correct
49 Correct 2988 ms 396176 KB Output is correct
50 Correct 2983 ms 396216 KB Output is correct
51 Correct 3023 ms 396376 KB Output is correct
52 Correct 3416 ms 396516 KB Output is correct
53 Correct 3416 ms 396488 KB Output is correct
54 Correct 3461 ms 396352 KB Output is correct
55 Correct 3508 ms 396220 KB Output is correct
56 Correct 3469 ms 429636 KB Output is correct
57 Correct 3487 ms 465764 KB Output is correct
58 Correct 3466 ms 504984 KB Output is correct
59 Correct 3420 ms 547200 KB Output is correct
60 Correct 3369 ms 592264 KB Output is correct
61 Correct 3300 ms 640748 KB Output is correct
62 Correct 3167 ms 691308 KB Output is correct
63 Correct 3047 ms 745432 KB Output is correct
64 Correct 1659 ms 823820 KB Output is correct
65 Correct 1620 ms 823928 KB Output is correct
66 Correct 524 ms 102392 KB Output is correct
67 Correct 3452 ms 210096 KB Output is correct
68 Correct 1091 ms 722376 KB Output is correct
69 Correct 4270 ms 723852 KB Output is correct
70 Correct 9205 ms 825536 KB Output is correct
71 Correct 10232 ms 277340 KB Output is correct
72 Correct 9964 ms 340988 KB Output is correct
73 Correct 10924 ms 399212 KB Output is correct
74 Correct 10943 ms 398840 KB Output is correct
75 Correct 11086 ms 399028 KB Output is correct
76 Correct 10247 ms 398724 KB Output is correct
77 Correct 10121 ms 398728 KB Output is correct
78 Correct 10897 ms 398704 KB Output is correct
79 Correct 11204 ms 468580 KB Output is correct
80 Correct 10953 ms 507792 KB Output is correct
81 Correct 9629 ms 549416 KB Output is correct
82 Correct 10944 ms 595344 KB Output is correct
83 Correct 9710 ms 642612 KB Output is correct
84 Correct 10489 ms 748304 KB Output is correct
85 Correct 8342 ms 826648 KB Output is correct