답안 #772884

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
772884	2023-07-04T12:20:15 Z	Ahmed57	Tug of War (BOI15_tug)	C++17	100 / 100	1061 ms	10960 KB

#include <bits/stdc++.h>
using namespace std;
const int mxN=6e4;
int n, k, l[mxN], r[mxN], s[mxN], dp0;
set<int> pc[mxN];
bitset<20*mxN+1> dp;
queue<int> qu;
vector<int> vc;
void fk(){
	cout << "NO";
	exit(0);
}
int main() {
	ios_base::sync_with_stdio(0);
	cin.tie(0);

	cin >> n >> k;
	n*=2;
	for(int i=0; i<n; ++i) {
		cin>>l[i]>>r[i]>>s[i], --l[i], r[i]+=n/2-1;
		pc[l[i]].insert(i);
		pc[r[i]].insert(i);
	}
	for(int i=0; i<n; ++i) {
		if(!pc[i].size())fk();
		else if(pc[i].size()==1)qu.push(i);
	}
	dp0=10*n;
	while(qu.size()){
		int u=qu.front();
		if(!pc[u].size())fk();
		qu.pop();
		int a=*pc[u].begin(),v=u^l[a]^r[a];
		dp0+=u<n/2?s[a]:-s[a];
		pc[v].erase(a);
		if(pc[v].size()==1)qu.push(v);
	}
	for(int i=0;i<n;++i) {
		if(pc[i].size()<2)
			continue;
		int c=0;
		for(int j=i; pc[j].size(); ) {
			int a=*pc[j].begin();
			c+=j<n/2?s[a]:-s[a];
			pc[l[a]].erase(a);
			pc[r[a]].erase(a);
			j^=l[a]^r[a];
		}
		c=abs(c);
		dp0-=c;
		vc.push_back(2*c);
	}
	dp[dp0]=1;
	for(int c:vc)dp|=dp<<c;
	bool ok=0;
	for(int i=10*n-k;i<=10*n+k&&!ok;++i)
		ok=dp[i];
	if(!ok)fk();
	cout << "YES";
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3540 KB	Output is correct
2	Correct	2 ms	3568 KB	Output is correct
3	Correct	2 ms	3564 KB	Output is correct
4	Correct	2 ms	3540 KB	Output is correct
5	Correct	2 ms	3572 KB	Output is correct
6	Correct	2 ms	3564 KB	Output is correct
7	Correct	2 ms	3540 KB	Output is correct
8	Correct	2 ms	3540 KB	Output is correct
9	Correct	2 ms	3576 KB	Output is correct
10	Correct	2 ms	3540 KB	Output is correct
11	Correct	2 ms	3540 KB	Output is correct
12	Correct	2 ms	3540 KB	Output is correct
13	Correct	2 ms	3540 KB	Output is correct
14	Correct	2 ms	3540 KB	Output is correct
15	Correct	2 ms	3540 KB	Output is correct
16	Correct	3 ms	3568 KB	Output is correct
17	Correct	2 ms	3540 KB	Output is correct
18	Correct	2 ms	3540 KB	Output is correct
19	Correct	3 ms	3540 KB	Output is correct
20	Correct	2 ms	3572 KB	Output is correct
21	Correct	2 ms	3412 KB	Output is correct
22	Correct	2 ms	3540 KB	Output is correct
23	Correct	2 ms	3568 KB	Output is correct
24	Correct	2 ms	3540 KB	Output is correct
25	Correct	2 ms	3540 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3540 KB	Output is correct
2	Correct	2 ms	3568 KB	Output is correct
3	Correct	2 ms	3564 KB	Output is correct
4	Correct	2 ms	3540 KB	Output is correct
5	Correct	2 ms	3572 KB	Output is correct
6	Correct	2 ms	3564 KB	Output is correct
7	Correct	2 ms	3540 KB	Output is correct
8	Correct	2 ms	3540 KB	Output is correct
9	Correct	2 ms	3576 KB	Output is correct
10	Correct	2 ms	3540 KB	Output is correct
11	Correct	2 ms	3540 KB	Output is correct
12	Correct	2 ms	3540 KB	Output is correct
13	Correct	2 ms	3540 KB	Output is correct
14	Correct	2 ms	3540 KB	Output is correct
15	Correct	2 ms	3540 KB	Output is correct
16	Correct	3 ms	3568 KB	Output is correct
17	Correct	2 ms	3540 KB	Output is correct
18	Correct	2 ms	3540 KB	Output is correct
19	Correct	3 ms	3540 KB	Output is correct
20	Correct	2 ms	3572 KB	Output is correct
21	Correct	2 ms	3412 KB	Output is correct
22	Correct	2 ms	3540 KB	Output is correct
23	Correct	2 ms	3568 KB	Output is correct
24	Correct	2 ms	3540 KB	Output is correct
25	Correct	2 ms	3540 KB	Output is correct
26	Correct	66 ms	4060 KB	Output is correct
27	Correct	12 ms	4052 KB	Output is correct
28	Correct	65 ms	4064 KB	Output is correct
29	Correct	12 ms	4064 KB	Output is correct
30	Correct	66 ms	4060 KB	Output is correct
31	Correct	14 ms	4060 KB	Output is correct
32	Correct	64 ms	4060 KB	Output is correct
33	Correct	11 ms	3960 KB	Output is correct
34	Correct	7 ms	3952 KB	Output is correct
35	Correct	12 ms	4052 KB	Output is correct
36	Correct	68 ms	4060 KB	Output is correct
37	Correct	14 ms	4056 KB	Output is correct
38	Correct	65 ms	4052 KB	Output is correct
39	Correct	12 ms	4064 KB	Output is correct
40	Correct	65 ms	4052 KB	Output is correct
41	Correct	11 ms	3960 KB	Output is correct
42	Correct	65 ms	4052 KB	Output is correct
43	Correct	12 ms	3960 KB	Output is correct
44	Correct	65 ms	4068 KB	Output is correct
45	Correct	12 ms	4064 KB	Output is correct
46	Correct	78 ms	4064 KB	Output is correct
47	Correct	3 ms	3796 KB	Output is correct
48	Correct	36 ms	3968 KB	Output is correct
49	Correct	34 ms	4052 KB	Output is correct
50	Correct	67 ms	4064 KB	Output is correct
51	Correct	67 ms	4072 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	159 ms	6024 KB	Output is correct
2	Correct	10 ms	5716 KB	Output is correct
3	Correct	153 ms	6040 KB	Output is correct
4	Correct	8 ms	5716 KB	Output is correct
5	Correct	170 ms	6028 KB	Output is correct
6	Correct	7 ms	5716 KB	Output is correct
7	Correct	172 ms	6020 KB	Output is correct
8	Correct	9 ms	5756 KB	Output is correct
9	Correct	155 ms	6024 KB	Output is correct
10	Correct	8 ms	5716 KB	Output is correct
11	Correct	150 ms	5924 KB	Output is correct
12	Correct	8 ms	5716 KB	Output is correct
13	Correct	153 ms	5984 KB	Output is correct
14	Correct	157 ms	5972 KB	Output is correct
15	Correct	8 ms	5716 KB	Output is correct
16	Correct	154 ms	6016 KB	Output is correct
17	Correct	8 ms	5716 KB	Output is correct
18	Correct	156 ms	6028 KB	Output is correct
19	Correct	8 ms	5716 KB	Output is correct
20	Correct	158 ms	6040 KB	Output is correct
21	Correct	8 ms	5716 KB	Output is correct
22	Correct	84 ms	5996 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	3540 KB	Output is correct
2	Correct	2 ms	3568 KB	Output is correct
3	Correct	2 ms	3564 KB	Output is correct
4	Correct	2 ms	3540 KB	Output is correct
5	Correct	2 ms	3572 KB	Output is correct
6	Correct	2 ms	3564 KB	Output is correct
7	Correct	2 ms	3540 KB	Output is correct
8	Correct	2 ms	3540 KB	Output is correct
9	Correct	2 ms	3576 KB	Output is correct
10	Correct	2 ms	3540 KB	Output is correct
11	Correct	2 ms	3540 KB	Output is correct
12	Correct	2 ms	3540 KB	Output is correct
13	Correct	2 ms	3540 KB	Output is correct
14	Correct	2 ms	3540 KB	Output is correct
15	Correct	2 ms	3540 KB	Output is correct
16	Correct	3 ms	3568 KB	Output is correct
17	Correct	2 ms	3540 KB	Output is correct
18	Correct	2 ms	3540 KB	Output is correct
19	Correct	3 ms	3540 KB	Output is correct
20	Correct	2 ms	3572 KB	Output is correct
21	Correct	2 ms	3412 KB	Output is correct
22	Correct	2 ms	3540 KB	Output is correct
23	Correct	2 ms	3568 KB	Output is correct
24	Correct	2 ms	3540 KB	Output is correct
25	Correct	2 ms	3540 KB	Output is correct
26	Correct	66 ms	4060 KB	Output is correct
27	Correct	12 ms	4052 KB	Output is correct
28	Correct	65 ms	4064 KB	Output is correct
29	Correct	12 ms	4064 KB	Output is correct
30	Correct	66 ms	4060 KB	Output is correct
31	Correct	14 ms	4060 KB	Output is correct
32	Correct	64 ms	4060 KB	Output is correct
33	Correct	11 ms	3960 KB	Output is correct
34	Correct	7 ms	3952 KB	Output is correct
35	Correct	12 ms	4052 KB	Output is correct
36	Correct	68 ms	4060 KB	Output is correct
37	Correct	14 ms	4056 KB	Output is correct
38	Correct	65 ms	4052 KB	Output is correct
39	Correct	12 ms	4064 KB	Output is correct
40	Correct	65 ms	4052 KB	Output is correct
41	Correct	11 ms	3960 KB	Output is correct
42	Correct	65 ms	4052 KB	Output is correct
43	Correct	12 ms	3960 KB	Output is correct
44	Correct	65 ms	4068 KB	Output is correct
45	Correct	12 ms	4064 KB	Output is correct
46	Correct	78 ms	4064 KB	Output is correct
47	Correct	3 ms	3796 KB	Output is correct
48	Correct	36 ms	3968 KB	Output is correct
49	Correct	34 ms	4052 KB	Output is correct
50	Correct	67 ms	4064 KB	Output is correct
51	Correct	67 ms	4072 KB	Output is correct
52	Correct	159 ms	6024 KB	Output is correct
53	Correct	10 ms	5716 KB	Output is correct
54	Correct	153 ms	6040 KB	Output is correct
55	Correct	8 ms	5716 KB	Output is correct
56	Correct	170 ms	6028 KB	Output is correct
57	Correct	7 ms	5716 KB	Output is correct
58	Correct	172 ms	6020 KB	Output is correct
59	Correct	9 ms	5756 KB	Output is correct
60	Correct	155 ms	6024 KB	Output is correct
61	Correct	8 ms	5716 KB	Output is correct
62	Correct	150 ms	5924 KB	Output is correct
63	Correct	8 ms	5716 KB	Output is correct
64	Correct	153 ms	5984 KB	Output is correct
65	Correct	157 ms	5972 KB	Output is correct
66	Correct	8 ms	5716 KB	Output is correct
67	Correct	154 ms	6016 KB	Output is correct
68	Correct	8 ms	5716 KB	Output is correct
69	Correct	156 ms	6028 KB	Output is correct
70	Correct	8 ms	5716 KB	Output is correct
71	Correct	158 ms	6040 KB	Output is correct
72	Correct	8 ms	5716 KB	Output is correct
73	Correct	84 ms	5996 KB	Output is correct
74	Correct	977 ms	10904 KB	Output is correct
75	Correct	68 ms	10700 KB	Output is correct
76	Correct	969 ms	10868 KB	Output is correct
77	Correct	73 ms	10752 KB	Output is correct
78	Correct	1016 ms	10868 KB	Output is correct
79	Correct	972 ms	10888 KB	Output is correct
80	Correct	73 ms	10688 KB	Output is correct
81	Correct	88 ms	10612 KB	Output is correct
82	Correct	1014 ms	10712 KB	Output is correct
83	Correct	967 ms	10960 KB	Output is correct
84	Correct	84 ms	10708 KB	Output is correct
85	Correct	988 ms	10856 KB	Output is correct
86	Correct	70 ms	10720 KB	Output is correct
87	Correct	980 ms	10924 KB	Output is correct
88	Correct	63 ms	10624 KB	Output is correct
89	Correct	1002 ms	10952 KB	Output is correct
90	Correct	66 ms	10712 KB	Output is correct
91	Correct	992 ms	10956 KB	Output is correct
92	Correct	66 ms	10716 KB	Output is correct
93	Correct	1057 ms	10872 KB	Output is correct
94	Correct	33 ms	10444 KB	Output is correct
95	Correct	549 ms	10868 KB	Output is correct
96	Correct	501 ms	10880 KB	Output is correct
97	Correct	1061 ms	10952 KB	Output is correct
98	Correct	1004 ms	10940 KB	Output is correct

답안 #772884

Compilation message

Subtask #1 18.0 / 18.0

Subtask #2 30.0 / 30.0

Subtask #3 23.0 / 23.0

Subtask #4 29.0 / 29.0

Subtask #1
18.0 / 18.0

Subtask #2
30.0 / 30.0

Subtask #3
23.0 / 23.0

Subtask #4
29.0 / 29.0