oj.uz

Submission #201847

# Submission time Handle Problem Language Result Execution time Memory
201847 2020-02-12T08:31:18 Z dennisstar Collapse (JOI18_collapse) C++17
100 / 100
 5071 ms 18720 KB 
#include <bits/stdc++.h>
#define fi first
#define se second
#define em emplace
#define eb emplace_back
#define all(V) (V).begin(), (V).end()
using namespace std;
typedef vector<int> vim;
typedef pair<int, int> pii;
typedef shared_ptr<vector<pii> > pvii;
#include "collapse.h"

const int B = 300;

struct UF {
	vim par, ch; bool im;
	UF(int n, bool i) : par(n, -1), im(i) {}
	int get(int x) { return par[x]!=-1?(par[x]=get(par[x])):x; }
	bool Union(int x, int y) {
		x=get(x), y=get(y);
		if (x==y) return false;
		if (im) ch.eb(y);
		par[y]=x;
		return true;
	}
	void resolve() { for (auto &i:ch) par[i]=-1; ch.clear(); }
};

vector<pii> solve(int N, vector<pii> Fix, vector<pair<pii, pvii> > S) {
	UF U1(N, false), U2(N, true); vector<pii> R;
	sort(all(Fix), [](pii &p1, pii &p2){ return p1.se<p2.se; });
	sort(all(S), [](pair<pii, pvii> &p1, pair<pii, pvii> &p2){ return p1.fi.fi<p2.fi.fi; });
	int tp=0, cnt=0;
	for (auto &i:S) {
		for (; tp<Fix.size()&&Fix[tp].se<=i.fi.fi; tp++) cnt+=U1.Union(Fix[tp].fi, Fix[tp].se);
		int im=cnt;
		for (auto &j:*i.se) if (j.se<=i.fi.fi) im+=U2.Union(U1.get(j.fi), U1.get(j.se));
		R.eb(i.fi.se, i.fi.fi+1-im);
		U2.resolve();
	}
	return R;
}

vim simulateCollapse(int N, vim T, vim X, vim Y, vim W, vim P) {
	int D=T.size(), Q=W.size();
	vim A(Q, 0); set<pii> Fix;
	vector<pair<pii, int> > qu;
	for (int i=0; i<Q; i++) qu.eb(pii(W[i], P[i]), i); sort(all(qu));
	for (int i=0; i<D; i++) if (X[i]>Y[i]) swap(X[i], Y[i]);
	for (int s=0, tp=0; s<D; s+=B) {
		int e=min(D, s+B);
		set<pii> nFix;
		for (int i=s; i<e; i++) if (Fix.find(pii(X[i], Y[i]))!=Fix.end())
			Fix.erase(pii(X[i], Y[i])), nFix.em(X[i], Y[i]);
		vector<pair<pii, pvii> > S1, S2;
		for (int i=s; i<e; i++) {
			if (T[i]==0) nFix.em(X[i], Y[i]);
			if (T[i]==1) nFix.erase(pii(X[i], Y[i]));
			pvii nf1(new vector<pii>), nf2(new vector<pii>);
			for (auto &j:nFix) nf1->eb(j), nf2->eb(N-1-j.se, N-1-j.fi);
			for (; tp<Q&&qu[tp].fi.fi==i; tp++)
				S1.eb(pii(qu[tp].fi.se, qu[tp].se), nf1), S2.eb(pii(N-2-qu[tp].fi.se, qu[tp].se), nf2);
		}
		vector<pii> F1, F2;
		for (auto &i:Fix) F1.eb(i), F2.eb(N-1-i.se, N-1-i.fi);
		vector<pii> r1 = solve(N, F1, S1);
		vector<pii> r2 = solve(N, F2, S2);
		for (auto &i:r1) A[i.fi]+=i.se;
		for (auto &i:r2) A[i.fi]+=i.se;
		for (int i=s; i<e; i++) {
			if (T[i]==0) Fix.em(X[i], Y[i]);
			if (T[i]==1) Fix.erase(pii(X[i], Y[i]));
		}
	}
	return A;
}

Compilation message

collapse.cpp: In function 'std::vector<std::pair<int, int> > solve(int, std::vector<std::pair<int, int> >, std::vector<std::pair<std::pair<int, int>, std::shared_ptr<std::vector<std::pair<int, int> > > > >)':
collapse.cpp:35:12: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
   for (; tp<Fix.size()&&Fix[tp].se<=i.fi.fi; tp++) cnt+=U1.Union(Fix[tp].fi, Fix[tp].se);
          ~~^~~~~~~~~~~
collapse.cpp: In function 'vim simulateCollapse(int, vim, vim, vim, vim, vim)':
collapse.cpp:48:2: warning: this 'for' clause does not guard... [-Wmisleading-indentation]
  for (int i=0; i<Q; i++) qu.eb(pii(W[i], P[i]), i); sort(all(qu));
  ^~~
collapse.cpp:48:53: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'for'
  for (int i=0; i<Q; i++) qu.eb(pii(W[i], P[i]), i); sort(all(qu));
                                                     ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 632 KB Output is correct
2 Correct 8 ms 1032 KB Output is correct
3 Correct 9 ms 1160 KB Output is correct
4 Correct 9 ms 1032 KB Output is correct
5 Correct 16 ms 760 KB Output is correct
6 Correct 48 ms 1784 KB Output is correct
7 Correct 8 ms 1032 KB Output is correct
8 Correct 9 ms 1144 KB Output is correct
9 Correct 19 ms 1016 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct
11 Correct 61 ms 1784 KB Output is correct
12 Correct 58 ms 1964 KB Output is correct

Subtask #2
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 61 ms 13112 KB Output is correct
2 Correct 69 ms 13372 KB Output is correct
3 Correct 278 ms 6256 KB Output is correct
4 Correct 83 ms 13672 KB Output is correct
5 Correct 561 ms 8684 KB Output is correct
6 Correct 188 ms 6636 KB Output is correct
7 Correct 3218 ms 18024 KB Output is correct
8 Correct 571 ms 9324 KB Output is correct
9 Correct 68 ms 14384 KB Output is correct
10 Correct 78 ms 14824 KB Output is correct
11 Correct 162 ms 8980 KB Output is correct
12 Correct 606 ms 10220 KB Output is correct
13 Correct 1884 ms 13636 KB Output is correct
14 Correct 4046 ms 18288 KB Output is correct
15 Correct 3311 ms 18608 KB Output is correct

Subtask #3
30.0 / 30.0

# Verdict Execution time Memory Grader output
1 Correct 56 ms 13104 KB Output is correct
2 Correct 72 ms 13364 KB Output is correct
3 Correct 80 ms 13160 KB Output is correct
4 Correct 89 ms 13252 KB Output is correct
5 Correct 239 ms 10292 KB Output is correct
6 Correct 234 ms 6508 KB Output is correct
7 Correct 2081 ms 14868 KB Output is correct
8 Correct 4291 ms 17068 KB Output is correct
9 Correct 74 ms 14776 KB Output is correct
10 Correct 248 ms 9408 KB Output is correct
11 Correct 4370 ms 18312 KB Output is correct
12 Correct 4993 ms 17784 KB Output is correct
13 Correct 4730 ms 18720 KB Output is correct
14 Correct 5071 ms 17948 KB Output is correct
15 Correct 4512 ms 18156 KB Output is correct

Subtask #4
35.0 / 35.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 632 KB Output is correct
2 Correct 8 ms 1032 KB Output is correct
3 Correct 9 ms 1160 KB Output is correct
4 Correct 9 ms 1032 KB Output is correct
5 Correct 16 ms 760 KB Output is correct
6 Correct 48 ms 1784 KB Output is correct
7 Correct 8 ms 1032 KB Output is correct
8 Correct 9 ms 1144 KB Output is correct
9 Correct 19 ms 1016 KB Output is correct
10 Correct 47 ms 1528 KB Output is correct
11 Correct 61 ms 1784 KB Output is correct
12 Correct 58 ms 1964 KB Output is correct
13 Correct 61 ms 13112 KB Output is correct
14 Correct 69 ms 13372 KB Output is correct
15 Correct 278 ms 6256 KB Output is correct
16 Correct 83 ms 13672 KB Output is correct
17 Correct 561 ms 8684 KB Output is correct
18 Correct 188 ms 6636 KB Output is correct
19 Correct 3218 ms 18024 KB Output is correct
20 Correct 571 ms 9324 KB Output is correct
21 Correct 68 ms 14384 KB Output is correct
22 Correct 78 ms 14824 KB Output is correct
23 Correct 162 ms 8980 KB Output is correct
24 Correct 606 ms 10220 KB Output is correct
25 Correct 1884 ms 13636 KB Output is correct
26 Correct 4046 ms 18288 KB Output is correct
27 Correct 3311 ms 18608 KB Output is correct
28 Correct 56 ms 13104 KB Output is correct
29 Correct 72 ms 13364 KB Output is correct
30 Correct 80 ms 13160 KB Output is correct
31 Correct 89 ms 13252 KB Output is correct
32 Correct 239 ms 10292 KB Output is correct
33 Correct 234 ms 6508 KB Output is correct
34 Correct 2081 ms 14868 KB Output is correct
35 Correct 4291 ms 17068 KB Output is correct
36 Correct 74 ms 14776 KB Output is correct
37 Correct 248 ms 9408 KB Output is correct
38 Correct 4370 ms 18312 KB Output is correct
39 Correct 4993 ms 17784 KB Output is correct
40 Correct 4730 ms 18720 KB Output is correct
41 Correct 5071 ms 17948 KB Output is correct
42 Correct 4512 ms 18156 KB Output is correct
43 Correct 451 ms 8428 KB Output is correct
44 Correct 3408 ms 16560 KB Output is correct
45 Correct 582 ms 9068 KB Output is correct
46 Correct 4236 ms 16944 KB Output is correct
47 Correct 73 ms 14648 KB Output is correct
48 Correct 85 ms 14700 KB Output is correct
49 Correct 216 ms 8976 KB Output is correct
50 Correct 359 ms 7788 KB Output is correct
51 Correct 731 ms 9836 KB Output is correct
52 Correct 1443 ms 11660 KB Output is correct
53 Correct 1502 ms 11968 KB Output is correct
54 Correct 2146 ms 13276 KB Output is correct
55 Correct 2077 ms 13584 KB Output is correct
56 Correct 2894 ms 14656 KB Output is correct
57 Correct 3779 ms 16524 KB Output is correct
58 Correct 3952 ms 16940 KB Output is correct
59 Correct 4381 ms 17784 KB Output is correct
60 Correct 5066 ms 18052 KB Output is correct