Submission #65395

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
65395	2018-08-07T13:50:10 Z	imsifile	Key of Impassable Doors (FXCUP3_key)	C++	100 / 100	44 ms	4700 KB

#include "key.h"
#include <stdio.h>
#include <algorithm>
#include <vector>
using namespace std;

int NN, ba[1010], self[1010], par[1010], ccn, ld[1010];
// par[i] = -x (i is in cycle x), ld[x] = leader of cycle x
vector<int> lds[1010]; // lds[i] : leaders that ba[x]=i

int chk[1010], sum;
void TakeKey2(int K){
	while(1){
		if(par[K]<0) K=par[K];
		if(K<0){
			K=ld[-K];
			if(!chk[K]) chk[K]=1, sum+=self[K];
			break;
		}
		if(chk[K]) break;
		chk[K]=1, sum++;
		K=par[K];
	}
}

int ExploreKey(vector<int> &v, int s, int e, int pl){
	if(pl){
		TakeKey(pl);
		for(int i=s; i<=e; i++){
			if(v[i]<0) TakeKey(ld[-v[i]]);
			else TakeKey(v[i]);
		}
		return Explore();
	}
	sum=0;
	for(int i=1; i<=NN; i++) chk[i]=0;
	for(int i=s; i<=e; i++) TakeKey2(v[i]);
	return sum;
}

int cmp(const int &x, const int &y){
	return self[x] < self[y];
}

int para(int ix, vector<int> &v){
	int mi=0, mx=v.size(), md;
	v.push_back(0);
	while(1){
		md = (mi+mx)/2;
		if(mi==mx) break;
		if(ExploreKey(v, mi, md, ix) <= ExploreKey(v, mi, md, 0)+1) mx=md;
		else mi=md+1;
	}
	md = v[md];
	v.pop_back();
	return md;
}

void EnsureKeyInfo(int N) {
	NN = N;
	for(int i=1; i<=N; i++){
		TakeKey(i);
		self[i]=Explore();
	}
	for(int i=0; i<N; i++) ba[i]=i+1;
	sort(ba, ba+N, cmp);
	for(int t=0; t<N; t++){
		int i=ba[t];
		par[i]=para(i, lds[self[i]-1]);
		if(par[i]<=0){
			if(par[i]==0){
				par[i]=-(++ccn), ld[ccn]=i;
				if(self[i]>1) lds[self[i]-1].push_back(-ccn);
				lds[self[i]].push_back(i);
			}
		}
		else lds[self[i]].push_back(i);
	}
	for(int i=1; i<=N; i++){
		int t=i;
		for(; par[t]>0; t=par[t]) Report(i, t);
		for(int j=1; j<=N; j++){
			if(par[t] == par[j]) Report(i, j);
		}
	}
}

Subtask #1
23.0 / 23.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	740 KB	Output is correct
3	Correct	2 ms	816 KB	Output is correct
4	Correct	2 ms	892 KB	Output is correct
5	Correct	2 ms	892 KB	Output is correct
6	Correct	2 ms	892 KB	Output is correct
7	Correct	3 ms	952 KB	Output is correct
8	Correct	4 ms	956 KB	Output is correct
9	Correct	4 ms	1040 KB	Output is correct
10	Correct	3 ms	1040 KB	Output is correct
11	Correct	3 ms	1040 KB	Output is correct
12	Correct	3 ms	1040 KB	Output is correct
13	Correct	3 ms	1040 KB	Output is correct
14	Correct	3 ms	1040 KB	Output is correct
15	Correct	3 ms	1040 KB	Output is correct
16	Correct	4 ms	1040 KB	Output is correct
17	Correct	3 ms	1040 KB	Output is correct

Subtask #2
34.0 / 34.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	740 KB	Output is correct
3	Correct	2 ms	816 KB	Output is correct
4	Correct	2 ms	892 KB	Output is correct
5	Correct	2 ms	892 KB	Output is correct
6	Correct	2 ms	892 KB	Output is correct
7	Correct	3 ms	952 KB	Output is correct
8	Correct	4 ms	956 KB	Output is correct
9	Correct	4 ms	1040 KB	Output is correct
10	Correct	3 ms	1040 KB	Output is correct
11	Correct	3 ms	1040 KB	Output is correct
12	Correct	3 ms	1040 KB	Output is correct
13	Correct	3 ms	1040 KB	Output is correct
14	Correct	3 ms	1040 KB	Output is correct
15	Correct	3 ms	1040 KB	Output is correct
16	Correct	4 ms	1040 KB	Output is correct
17	Correct	3 ms	1040 KB	Output is correct
18	Correct	6 ms	1904 KB	Output is correct
19	Correct	5 ms	1904 KB	Output is correct
20	Correct	5 ms	1904 KB	Output is correct
21	Correct	5 ms	1904 KB	Output is correct
22	Correct	4 ms	1984 KB	Output is correct
23	Correct	10 ms	2540 KB	Output is correct
24	Correct	7 ms	2540 KB	Output is correct
25	Correct	9 ms	2540 KB	Output is correct
26	Correct	10 ms	2540 KB	Output is correct
27	Correct	10 ms	2540 KB	Output is correct
28	Correct	11 ms	2540 KB	Output is correct
29	Correct	8 ms	2540 KB	Output is correct
30	Correct	8 ms	2540 KB	Output is correct
31	Correct	7 ms	2540 KB	Output is correct
32	Correct	9 ms	2540 KB	Output is correct
33	Correct	8 ms	2544 KB	Output is correct

Subtask #3
43.0 / 43.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	2 ms	376 KB	Output is correct
2	Correct	2 ms	740 KB	Output is correct
3	Correct	2 ms	816 KB	Output is correct
4	Correct	2 ms	892 KB	Output is correct
5	Correct	2 ms	892 KB	Output is correct
6	Correct	2 ms	892 KB	Output is correct
7	Correct	3 ms	952 KB	Output is correct
8	Correct	4 ms	956 KB	Output is correct
9	Correct	4 ms	1040 KB	Output is correct
10	Correct	3 ms	1040 KB	Output is correct
11	Correct	3 ms	1040 KB	Output is correct
12	Correct	3 ms	1040 KB	Output is correct
13	Correct	3 ms	1040 KB	Output is correct
14	Correct	3 ms	1040 KB	Output is correct
15	Correct	3 ms	1040 KB	Output is correct
16	Correct	4 ms	1040 KB	Output is correct
17	Correct	3 ms	1040 KB	Output is correct
18	Correct	6 ms	1904 KB	Output is correct
19	Correct	5 ms	1904 KB	Output is correct
20	Correct	5 ms	1904 KB	Output is correct
21	Correct	5 ms	1904 KB	Output is correct
22	Correct	4 ms	1984 KB	Output is correct
23	Correct	10 ms	2540 KB	Output is correct
24	Correct	7 ms	2540 KB	Output is correct
25	Correct	9 ms	2540 KB	Output is correct
26	Correct	10 ms	2540 KB	Output is correct
27	Correct	10 ms	2540 KB	Output is correct
28	Correct	11 ms	2540 KB	Output is correct
29	Correct	8 ms	2540 KB	Output is correct
30	Correct	8 ms	2540 KB	Output is correct
31	Correct	7 ms	2540 KB	Output is correct
32	Correct	9 ms	2540 KB	Output is correct
33	Correct	8 ms	2544 KB	Output is correct
34	Correct	17 ms	4076 KB	Output is correct
35	Correct	18 ms	4076 KB	Output is correct
36	Correct	23 ms	4076 KB	Output is correct
37	Correct	18 ms	4076 KB	Output is correct
38	Correct	15 ms	4196 KB	Output is correct
39	Correct	23 ms	4588 KB	Output is correct
40	Correct	24 ms	4588 KB	Output is correct
41	Correct	23 ms	4588 KB	Output is correct
42	Correct	21 ms	4588 KB	Output is correct
43	Correct	30 ms	4700 KB	Output is correct
44	Correct	44 ms	4700 KB	Output is correct
45	Correct	30 ms	4700 KB	Output is correct
46	Correct	24 ms	4700 KB	Output is correct
47	Correct	26 ms	4700 KB	Output is correct
48	Correct	19 ms	4700 KB	Output is correct
49	Correct	19 ms	4700 KB	Output is correct

Submission #65395

Compilation message

Subtask #1 23.0 / 23.0

Subtask #2 34.0 / 34.0

Subtask #3 43.0 / 43.0

Subtask #1
23.0 / 23.0

Subtask #2
34.0 / 34.0

Subtask #3
43.0 / 43.0