답안 #893173

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
893173	2023-12-26T15:32:29 Z	amirhoseinfar1385	Joker (BOI20_joker)	C++17	100 / 100	123 ms	7448 KB

Joker

//#pragma GCC optimize("O3,unroll-loops")
//#pragma GCC target("avx2")
#include<bits/stdc++.h>
using namespace std;
const unsigned int maxn=200000+10;
unsigned int n,m,q,dp[maxn],f;
pair<unsigned int,unsigned int>alle[maxn];

struct dsu{
	vector<unsigned int>ha;
	unsigned int par[maxn],sz[maxn],val[maxn];
	dsu(){
		for(unsigned int i=0;i<maxn;i++){
			par[i]=i;
			sz[i]=1;
		}
	}
	unsigned int root(unsigned int u){
		while(u!=par[u]){
			u=par[u];
		}
		return u;
	}
	unsigned int len(unsigned int u){
		unsigned int ret=0;
		while(u!=par[u]){
			ret+=val[u];
			u=par[u];
		}
		return ret;
	}

	void con(unsigned int u,unsigned int v){
		unsigned int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			if(sz[rootu]<sz[rootv]){
				swap(rootu,rootv);
				swap(u,v);
			}
			unsigned int lu=len(u),lv=len(v);
			par[rootv]=rootu;
			sz[rootu]+=sz[rootv];
			if((lu&1)==(lv&1)){
				val[rootv]=1;
			}
			else{
				val[rootv]=0;
			}
			ha.push_back(rootv);
			return ;
		}
		ha.push_back(-1);
	}
	bool two(unsigned int u,unsigned int v){
		unsigned int rootu=root(u),rootv=root(v);
		if(rootu!=rootv){
			return 0;
		}
		unsigned int lu=len(u),lv=len(v);
		if((lu&1)==(lv&1)){
			return 1;
		}
		return 0;
	}
	void back(){
		if((unsigned int)ha.back()==-1){
			ha.pop_back();
			return ;
		}
		unsigned int x=ha.back();
		sz[par[x]]-=sz[x];
		par[x]=x;
		val[x]=0;
		ha.pop_back();
		return ;
	}
}ds;

void solve(unsigned int l,unsigned int r,unsigned int tl,unsigned int tr){
	if(l>r){
		return ;
	}
	if(tl==tr){
		for(unsigned int i=l;i<=r;i++){
			dp[i]=tl;
		}
		return ;
	}
	unsigned int opt=0;
	unsigned int now=ds.ha.size();
	unsigned int mid=(l+r)>>1;
	for(unsigned int i=l;i<=mid;i++){
		ds.con(alle[i].first,alle[i].second);
	}
	for(unsigned int i=tr;i>=tl;i--){
		if(ds.two(alle[i].first,alle[i].second)){
			opt=i;
			break;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	dp[mid]=opt;
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
	for(unsigned int i=l;i<=mid;i++){
		ds.con(alle[i].first,alle[i].second);
	}
	solve(mid+1,r,opt,tr);
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
	for(unsigned int i=tr;i>opt;i--){
		ds.con(alle[i].first,alle[i].second);
	}
	solve(l,mid-1,tl,opt);
	while((unsigned int)ds.ha.size()>now){
		ds.back();
	}
}

unsigned int pre(){
	for(unsigned int i=1;i<=m;i++){
		if(ds.two(alle[i].first,alle[i].second)){
			return i;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	return m+1;
}

unsigned int suf(){
	for(unsigned int i=m;i>=0;i--){
		if(ds.two(alle[i].first,alle[i].second)){
			return i;
		}
		ds.con(alle[i].first,alle[i].second);
	}
	return 0;
}

int main(){
	ios::sync_with_stdio(0);
	cin.tie(0);
	cout.tie(0);	
	cin>>n>>m>>q;
	for(unsigned int i=1;i<=m;i++){
		cin>>alle[i].first>>alle[i].second;
	}
	unsigned int ind=pre();
	while((unsigned int)ds.ha.size()>0){
		ds.back();
	}
	solve(1,ind-1,0,m);
	for(unsigned int i=ind;i<=m;i++){
		dp[i]=m+2;
	}
	if((unsigned int)ds.ha.size()!=0){
		assert(0);
	}
	dp[0]=suf();
	for(unsigned int i=0;i<q;i++){
		unsigned int l,r;
		cin>>l>>r;
		if(dp[l-1]<=r){
			cout<<"NO\n";
		}
		else{
			cout<<"YES\n";
		}
	}
}

Compilation message

Joker.cpp: In member function 'void dsu::back()':
Joker.cpp:66:29: warning: comparison of integer expressions of different signedness: '__gnu_cxx::__alloc_traits<std::allocator<unsigned int>, unsigned int>::value_type' {aka 'unsigned int'} and 'int' [-Wsign-compare]
   66 |   if((unsigned int)ha.back()==-1){
      |      ~~~~~~~~~~~~~~~~~~~~~~~^~~~

Subtask #1
6.0 / 6.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4508 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4696 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4504 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4956 KB	Output is correct
25	Correct	1 ms	4700 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4952 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct

Subtask #2
8.0 / 8.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4508 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4696 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4504 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4956 KB	Output is correct
25	Correct	1 ms	4700 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4952 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	2 ms	4700 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4696 KB	Output is correct
33	Correct	1 ms	4952 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	2 ms	4700 KB	Output is correct
37	Correct	2 ms	4520 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	2 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4696 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	2 ms	4700 KB	Output is correct
52	Correct	2 ms	4740 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct

Subtask #3
25.0 / 25.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	88 ms	6100 KB	Output is correct
4	Correct	110 ms	7356 KB	Output is correct
5	Correct	63 ms	6860 KB	Output is correct
6	Correct	66 ms	6100 KB	Output is correct
7	Correct	62 ms	6096 KB	Output is correct
8	Correct	88 ms	6304 KB	Output is correct
9	Correct	93 ms	6356 KB	Output is correct
10	Correct	109 ms	6396 KB	Output is correct
11	Correct	89 ms	6096 KB	Output is correct
12	Correct	95 ms	6100 KB	Output is correct
13	Correct	90 ms	6056 KB	Output is correct
14	Correct	89 ms	6288 KB	Output is correct
15	Correct	102 ms	6136 KB	Output is correct
16	Correct	113 ms	6136 KB	Output is correct

Subtask #4
10.0 / 10.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4508 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4696 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4504 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4956 KB	Output is correct
25	Correct	1 ms	4700 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4952 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	88 ms	6100 KB	Output is correct
30	Correct	110 ms	7356 KB	Output is correct
31	Correct	63 ms	6860 KB	Output is correct
32	Correct	66 ms	6100 KB	Output is correct
33	Correct	62 ms	6096 KB	Output is correct
34	Correct	88 ms	6304 KB	Output is correct
35	Correct	93 ms	6356 KB	Output is correct
36	Correct	109 ms	6396 KB	Output is correct
37	Correct	89 ms	6096 KB	Output is correct
38	Correct	95 ms	6100 KB	Output is correct
39	Correct	90 ms	6056 KB	Output is correct
40	Correct	89 ms	6288 KB	Output is correct
41	Correct	102 ms	6136 KB	Output is correct
42	Correct	113 ms	6136 KB	Output is correct
43	Correct	96 ms	6140 KB	Output is correct
44	Correct	111 ms	7448 KB	Output is correct
45	Correct	102 ms	6584 KB	Output is correct
46	Correct	62 ms	6132 KB	Output is correct
47	Correct	74 ms	6200 KB	Output is correct
48	Correct	91 ms	6432 KB	Output is correct
49	Correct	108 ms	6344 KB	Output is correct
50	Correct	94 ms	6300 KB	Output is correct
51	Correct	103 ms	6096 KB	Output is correct
52	Correct	91 ms	6100 KB	Output is correct
53	Correct	87 ms	6096 KB	Output is correct
54	Correct	93 ms	6308 KB	Output is correct
55	Correct	108 ms	6360 KB	Output is correct
56	Correct	123 ms	6080 KB	Output is correct

Subtask #5
22.0 / 22.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4508 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4696 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4504 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4956 KB	Output is correct
25	Correct	1 ms	4700 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4952 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	2 ms	4700 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4696 KB	Output is correct
33	Correct	1 ms	4952 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	2 ms	4700 KB	Output is correct
37	Correct	2 ms	4520 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	2 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4696 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	2 ms	4700 KB	Output is correct
52	Correct	2 ms	4740 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct
55	Correct	68 ms	5588 KB	Output is correct
56	Correct	90 ms	6860 KB	Output is correct
57	Correct	40 ms	5924 KB	Output is correct
58	Correct	50 ms	5612 KB	Output is correct
59	Correct	71 ms	5536 KB	Output is correct
60	Correct	89 ms	5540 KB	Output is correct
61	Correct	75 ms	5536 KB	Output is correct
62	Correct	82 ms	5568 KB	Output is correct
63	Correct	62 ms	5792 KB	Output is correct
64	Correct	80 ms	5544 KB	Output is correct
65	Correct	92 ms	5588 KB	Output is correct

Subtask #6
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	1 ms	4700 KB	Output is correct
2	Correct	1 ms	4700 KB	Output is correct
3	Correct	1 ms	4700 KB	Output is correct
4	Correct	1 ms	4700 KB	Output is correct
5	Correct	1 ms	4700 KB	Output is correct
6	Correct	1 ms	4700 KB	Output is correct
7	Correct	1 ms	4700 KB	Output is correct
8	Correct	1 ms	4700 KB	Output is correct
9	Correct	1 ms	4700 KB	Output is correct
10	Correct	1 ms	4700 KB	Output is correct
11	Correct	1 ms	4700 KB	Output is correct
12	Correct	1 ms	4700 KB	Output is correct
13	Correct	1 ms	4700 KB	Output is correct
14	Correct	1 ms	4700 KB	Output is correct
15	Correct	1 ms	4700 KB	Output is correct
16	Correct	1 ms	4508 KB	Output is correct
17	Correct	1 ms	4700 KB	Output is correct
18	Correct	1 ms	4700 KB	Output is correct
19	Correct	1 ms	4700 KB	Output is correct
20	Correct	1 ms	4696 KB	Output is correct
21	Correct	1 ms	4700 KB	Output is correct
22	Correct	1 ms	4504 KB	Output is correct
23	Correct	1 ms	4700 KB	Output is correct
24	Correct	1 ms	4956 KB	Output is correct
25	Correct	1 ms	4700 KB	Output is correct
26	Correct	1 ms	4700 KB	Output is correct
27	Correct	1 ms	4952 KB	Output is correct
28	Correct	1 ms	4700 KB	Output is correct
29	Correct	2 ms	4700 KB	Output is correct
30	Correct	2 ms	4700 KB	Output is correct
31	Correct	1 ms	4700 KB	Output is correct
32	Correct	1 ms	4696 KB	Output is correct
33	Correct	1 ms	4952 KB	Output is correct
34	Correct	1 ms	4700 KB	Output is correct
35	Correct	2 ms	4700 KB	Output is correct
36	Correct	2 ms	4700 KB	Output is correct
37	Correct	2 ms	4520 KB	Output is correct
38	Correct	2 ms	4700 KB	Output is correct
39	Correct	1 ms	4700 KB	Output is correct
40	Correct	1 ms	4700 KB	Output is correct
41	Correct	1 ms	4700 KB	Output is correct
42	Correct	1 ms	4700 KB	Output is correct
43	Correct	2 ms	4700 KB	Output is correct
44	Correct	2 ms	4700 KB	Output is correct
45	Correct	1 ms	4700 KB	Output is correct
46	Correct	2 ms	4700 KB	Output is correct
47	Correct	2 ms	4700 KB	Output is correct
48	Correct	1 ms	4700 KB	Output is correct
49	Correct	2 ms	4696 KB	Output is correct
50	Correct	1 ms	4700 KB	Output is correct
51	Correct	2 ms	4700 KB	Output is correct
52	Correct	2 ms	4740 KB	Output is correct
53	Correct	2 ms	4700 KB	Output is correct
54	Correct	2 ms	4700 KB	Output is correct
55	Correct	88 ms	6100 KB	Output is correct
56	Correct	110 ms	7356 KB	Output is correct
57	Correct	63 ms	6860 KB	Output is correct
58	Correct	66 ms	6100 KB	Output is correct
59	Correct	62 ms	6096 KB	Output is correct
60	Correct	88 ms	6304 KB	Output is correct
61	Correct	93 ms	6356 KB	Output is correct
62	Correct	109 ms	6396 KB	Output is correct
63	Correct	89 ms	6096 KB	Output is correct
64	Correct	95 ms	6100 KB	Output is correct
65	Correct	90 ms	6056 KB	Output is correct
66	Correct	89 ms	6288 KB	Output is correct
67	Correct	102 ms	6136 KB	Output is correct
68	Correct	113 ms	6136 KB	Output is correct
69	Correct	96 ms	6140 KB	Output is correct
70	Correct	111 ms	7448 KB	Output is correct
71	Correct	102 ms	6584 KB	Output is correct
72	Correct	62 ms	6132 KB	Output is correct
73	Correct	74 ms	6200 KB	Output is correct
74	Correct	91 ms	6432 KB	Output is correct
75	Correct	108 ms	6344 KB	Output is correct
76	Correct	94 ms	6300 KB	Output is correct
77	Correct	103 ms	6096 KB	Output is correct
78	Correct	91 ms	6100 KB	Output is correct
79	Correct	87 ms	6096 KB	Output is correct
80	Correct	93 ms	6308 KB	Output is correct
81	Correct	108 ms	6360 KB	Output is correct
82	Correct	123 ms	6080 KB	Output is correct
83	Correct	68 ms	5588 KB	Output is correct
84	Correct	90 ms	6860 KB	Output is correct
85	Correct	40 ms	5924 KB	Output is correct
86	Correct	50 ms	5612 KB	Output is correct
87	Correct	71 ms	5536 KB	Output is correct
88	Correct	89 ms	5540 KB	Output is correct
89	Correct	75 ms	5536 KB	Output is correct
90	Correct	82 ms	5568 KB	Output is correct
91	Correct	62 ms	5792 KB	Output is correct
92	Correct	80 ms	5544 KB	Output is correct
93	Correct	92 ms	5588 KB	Output is correct
94	Correct	94 ms	6388 KB	Output is correct
95	Correct	117 ms	6608 KB	Output is correct
96	Correct	67 ms	6596 KB	Output is correct
97	Correct	65 ms	6292 KB	Output is correct
98	Correct	69 ms	6532 KB	Output is correct
99	Correct	85 ms	6348 KB	Output is correct
100	Correct	88 ms	6328 KB	Output is correct
101	Correct	95 ms	6288 KB	Output is correct
102	Correct	103 ms	6348 KB	Output is correct
103	Correct	108 ms	6344 KB	Output is correct
104	Correct	87 ms	6272 KB	Output is correct
105	Correct	103 ms	6356 KB	Output is correct
106	Correct	116 ms	6324 KB	Output is correct
107	Correct	54 ms	6608 KB	Output is correct
108	Correct	95 ms	6100 KB	Output is correct
109	Correct	94 ms	6096 KB	Output is correct
110	Correct	92 ms	6092 KB	Output is correct
111	Correct	91 ms	6096 KB	Output is correct
112	Correct	92 ms	6068 KB	Output is correct
113	Correct	91 ms	6224 KB	Output is correct
114	Correct	91 ms	6096 KB	Output is correct
115	Correct	93 ms	6064 KB	Output is correct
116	Correct	91 ms	6100 KB	Output is correct

답안 #893173

Compilation message

Subtask #1 6.0 / 6.0

Subtask #2 8.0 / 8.0

Subtask #3 25.0 / 25.0

Subtask #4 10.0 / 10.0

Subtask #5 22.0 / 22.0

Subtask #6 29.0 / 29.0

Subtask #1
6.0 / 6.0

Subtask #2
8.0 / 8.0

Subtask #3
25.0 / 25.0

Subtask #4
10.0 / 10.0

Subtask #5
22.0 / 22.0

Subtask #6
29.0 / 29.0