Submission #1051388

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1051388	2024-08-10T05:47:46 Z	LittleOrange	Connecting Supertrees (IOI20_supertrees)	C++17	40 / 100	117 ms	22188 KB

supertrees

#include "supertrees.h"
#include <vector>
#include<bits/stdc++.h>
using namespace std;
using ll = int;
struct dsu{
	ll n;
	vector<ll> p;
	dsu(ll N):n(N),p(N,-1){}
	ll g(ll i){
		return p[i]<0?i:p[i]=g(p[i]);
	}
	bool e(ll a, ll b){
		return g(a)==g(b);
	}
	bool m(ll a, ll b){
		a = g(a);
		b = g(b);
		if(a==b) return false;
		if (p[a]>p[b]) swap(a,b);
		p[a] += p[b];
		p[b] = a;
		return true;
	}
};

int construct(std::vector<std::vector<int>> p) {
	int n = p.size();
	vector<vector<ll>> ans(n,vector<ll>(n,0));
	dsu d(n);
	for(ll i = 0;i<n;i++) for(ll j = 0;j<n;j++){
		if (p[i][j]) d.m(i,j);
	}
	for(ll i = 0;i<n;i++) for(ll j = 0;j<n;j++){
		if (!p[i][j]&&d.e(i,j)) return 0;
	}
	vector<ll> g;
	for(ll i = 0;i<n;i++) if(d.g(i)==i) g.push_back(i);
	ll gc = g.size();
	vector<vector<ll>> gs(gc);
	for(ll i = 0;i<n;i++) gs[lower_bound(g.begin(),g.end(),d.g(i))-g.begin()].push_back(i);
	for(auto &o : gs) if(o.size()>1){
		ll ty = p[o[0]][o[1]];
		for(ll i = 1;i<o.size();i++) ans[o[i-1]][o[i]] = ans[o[i]][o[i-1]] = 1;
		if (ty == 2){
			if (o.size()==2) return 0;
			ans[o.front()][o.back()] = ans[o.back()][o.front()] = 1;
		}
	}
	build(ans);
	return 1;
}

Compilation message

supertrees.cpp: In function 'int construct(std::vector<std::vector<int> >)':
supertrees.cpp:44:17: warning: comparison of integer expressions of different signedness: 'll' {aka 'int'} and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   44 |   for(ll i = 1;i<o.size();i++) ans[o[i-1]][o[i]] = ans[o[i]][o[i-1]] = 1;
      |                ~^~~~~~~~~

Subtask #1
11.0 / 11.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	4 ms	1116 KB	Output is correct
7	Correct	117 ms	22024 KB	Output is correct

Subtask #2
10.0 / 10.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	4 ms	1116 KB	Output is correct
7	Correct	117 ms	22024 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	4 ms	1280 KB	Output is correct
13	Correct	93 ms	22100 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	2 ms	860 KB	Output is correct
17	Correct	50 ms	12052 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	24 ms	5724 KB	Output is correct
21	Correct	102 ms	22096 KB	Output is correct
22	Correct	95 ms	22096 KB	Output is correct
23	Correct	100 ms	21984 KB	Output is correct
24	Correct	101 ms	22096 KB	Output is correct
25	Correct	42 ms	12252 KB	Output is correct
26	Correct	40 ms	12044 KB	Output is correct
27	Correct	100 ms	22096 KB	Output is correct
28	Correct	94 ms	22188 KB	Output is correct

Subtask #3
19.0 / 19.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	0 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	0 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	4 ms	1116 KB	Output is correct
9	Correct	97 ms	22112 KB	Output is correct
10	Correct	0 ms	344 KB	Output is correct
11	Correct	1 ms	344 KB	Output is correct
12	Correct	4 ms	1116 KB	Output is correct
13	Correct	94 ms	22096 KB	Output is correct
14	Correct	0 ms	600 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	2 ms	860 KB	Output is correct
17	Correct	54 ms	12052 KB	Output is correct
18	Correct	1 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	0 ms	348 KB	Output is correct
21	Correct	24 ms	5724 KB	Output is correct
22	Correct	97 ms	22096 KB	Output is correct
23	Correct	94 ms	21984 KB	Output is correct
24	Correct	101 ms	22100 KB	Output is correct
25	Correct	42 ms	12112 KB	Output is correct
26	Correct	43 ms	12116 KB	Output is correct
27	Correct	94 ms	22100 KB	Output is correct
28	Correct	106 ms	22036 KB	Output is correct
29	Correct	42 ms	12116 KB	Output is correct

Subtask #4
0 / 35.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	24 ms	5832 KB	Output is correct
5	Correct	99 ms	22100 KB	Output is correct
6	Correct	97 ms	22036 KB	Output is correct
7	Correct	107 ms	22096 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	24 ms	5728 KB	Output is correct
10	Correct	102 ms	21972 KB	Output is correct
11	Correct	94 ms	22120 KB	Output is correct
12	Correct	101 ms	22100 KB	Output is correct
13	Correct	0 ms	344 KB	Output is correct
14	Correct	0 ms	344 KB	Output is correct
15	Incorrect	0 ms	344 KB	Too many ways to get from 0 to 4, should be 1 found no less than 2
16	Halted	0 ms	0 KB	-

Subtask #5
0 / 21.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	4 ms	1116 KB	Output is correct
7	Correct	117 ms	22024 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	4 ms	1280 KB	Output is correct
13	Correct	93 ms	22100 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	2 ms	860 KB	Output is correct
17	Correct	50 ms	12052 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	24 ms	5724 KB	Output is correct
21	Correct	102 ms	22096 KB	Output is correct
22	Correct	95 ms	22096 KB	Output is correct
23	Correct	100 ms	21984 KB	Output is correct
24	Correct	101 ms	22096 KB	Output is correct
25	Correct	42 ms	12252 KB	Output is correct
26	Correct	40 ms	12044 KB	Output is correct
27	Correct	100 ms	22096 KB	Output is correct
28	Correct	94 ms	22188 KB	Output is correct
29	Correct	0 ms	344 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	4 ms	1116 KB	Output is correct
37	Correct	97 ms	22112 KB	Output is correct
38	Correct	0 ms	344 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	4 ms	1116 KB	Output is correct
41	Correct	94 ms	22096 KB	Output is correct
42	Correct	0 ms	600 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	2 ms	860 KB	Output is correct
45	Correct	54 ms	12052 KB	Output is correct
46	Correct	1 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	24 ms	5724 KB	Output is correct
50	Correct	97 ms	22096 KB	Output is correct
51	Correct	94 ms	21984 KB	Output is correct
52	Correct	101 ms	22100 KB	Output is correct
53	Correct	42 ms	12112 KB	Output is correct
54	Correct	43 ms	12116 KB	Output is correct
55	Correct	94 ms	22100 KB	Output is correct
56	Correct	106 ms	22036 KB	Output is correct
57	Correct	42 ms	12116 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	3 ms	860 KB	Output is correct
61	Correct	49 ms	12112 KB	Output is correct
62	Correct	1 ms	344 KB	Output is correct
63	Correct	0 ms	344 KB	Output is correct
64	Correct	0 ms	344 KB	Output is correct
65	Incorrect	24 ms	5696 KB	Too many ways to get from 1 to 269, should be 1 found no less than 2
66	Halted	0 ms	0 KB	-

Subtask #6
0 / 4.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	344 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	348 KB	Output is correct
5	Correct	0 ms	348 KB	Output is correct
6	Correct	4 ms	1116 KB	Output is correct
7	Correct	117 ms	22024 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	1 ms	344 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	4 ms	1280 KB	Output is correct
13	Correct	93 ms	22100 KB	Output is correct
14	Correct	0 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct
16	Correct	2 ms	860 KB	Output is correct
17	Correct	50 ms	12052 KB	Output is correct
18	Correct	0 ms	348 KB	Output is correct
19	Correct	0 ms	348 KB	Output is correct
20	Correct	24 ms	5724 KB	Output is correct
21	Correct	102 ms	22096 KB	Output is correct
22	Correct	95 ms	22096 KB	Output is correct
23	Correct	100 ms	21984 KB	Output is correct
24	Correct	101 ms	22096 KB	Output is correct
25	Correct	42 ms	12252 KB	Output is correct
26	Correct	40 ms	12044 KB	Output is correct
27	Correct	100 ms	22096 KB	Output is correct
28	Correct	94 ms	22188 KB	Output is correct
29	Correct	0 ms	344 KB	Output is correct
30	Correct	0 ms	348 KB	Output is correct
31	Correct	0 ms	348 KB	Output is correct
32	Correct	0 ms	348 KB	Output is correct
33	Correct	0 ms	348 KB	Output is correct
34	Correct	0 ms	348 KB	Output is correct
35	Correct	0 ms	348 KB	Output is correct
36	Correct	4 ms	1116 KB	Output is correct
37	Correct	97 ms	22112 KB	Output is correct
38	Correct	0 ms	344 KB	Output is correct
39	Correct	1 ms	344 KB	Output is correct
40	Correct	4 ms	1116 KB	Output is correct
41	Correct	94 ms	22096 KB	Output is correct
42	Correct	0 ms	600 KB	Output is correct
43	Correct	0 ms	348 KB	Output is correct
44	Correct	2 ms	860 KB	Output is correct
45	Correct	54 ms	12052 KB	Output is correct
46	Correct	1 ms	348 KB	Output is correct
47	Correct	0 ms	348 KB	Output is correct
48	Correct	0 ms	348 KB	Output is correct
49	Correct	24 ms	5724 KB	Output is correct
50	Correct	97 ms	22096 KB	Output is correct
51	Correct	94 ms	21984 KB	Output is correct
52	Correct	101 ms	22100 KB	Output is correct
53	Correct	42 ms	12112 KB	Output is correct
54	Correct	43 ms	12116 KB	Output is correct
55	Correct	94 ms	22100 KB	Output is correct
56	Correct	106 ms	22036 KB	Output is correct
57	Correct	42 ms	12116 KB	Output is correct
58	Correct	0 ms	348 KB	Output is correct
59	Correct	0 ms	348 KB	Output is correct
60	Correct	0 ms	348 KB	Output is correct
61	Correct	24 ms	5832 KB	Output is correct
62	Correct	99 ms	22100 KB	Output is correct
63	Correct	97 ms	22036 KB	Output is correct
64	Correct	107 ms	22096 KB	Output is correct
65	Correct	0 ms	348 KB	Output is correct
66	Correct	24 ms	5728 KB	Output is correct
67	Correct	102 ms	21972 KB	Output is correct
68	Correct	94 ms	22120 KB	Output is correct
69	Correct	101 ms	22100 KB	Output is correct
70	Correct	0 ms	344 KB	Output is correct
71	Correct	0 ms	344 KB	Output is correct
72	Incorrect	0 ms	344 KB	Too many ways to get from 0 to 4, should be 1 found no less than 2
73	Halted	0 ms	0 KB	-

Submission #1051388

Compilation message

Subtask #1 11.0 / 11.0

Subtask #2 10.0 / 10.0

Subtask #3 19.0 / 19.0

Subtask #4 0 / 35.0

Subtask #5 0 / 21.0

Subtask #6 0 / 4.0

Subtask #1
11.0 / 11.0

Subtask #2
10.0 / 10.0

Subtask #3
19.0 / 19.0

Subtask #4
0 / 35.0

Subtask #5
0 / 21.0

Subtask #6
0 / 4.0