답안 #189128

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
189128	2020-01-13T20:47:11 Z	MvC	Tug of War (BOI15_tug)	C++11	100 / 100	2048 ms	6424 KB

#pragma GCC optimize("O3")
#pragma GCC optimize("unroll-loops")
#include <bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define mkp make_pair
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
typedef long double ld;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=(1LL<<62);
const int inf=(1<<30);
const int nmax=6e4+50;
const int mmax=1e6+2e5+50;
const int mod=1e9+7;
using namespace std;
int n,k,l[nmax],r[nmax],s[nmax],i,vl[nmax],cur,x,y,sa,sb,nx[nmax],j;
vector<int>g[nmax],vc,vec;
bitset<nmax>b;
bitset<mmax>f;
int dfs(int x)
{
	for(int i=0;i<(int)g[x].size();i++)
	{
		int y=g[x][i];
		if(b[y])continue;
		b[y]=1;
		if(!vl[y] || dfs(vl[y]))
		{
			vl[y]=x;
			return 1;
		}
	}
	return 0;
}
int main()
{
	//freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	//mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
	cin>>n>>k;
	for(i=1;i<=2*n;i++)
	{
		cin>>l[i]>>r[i]>>s[i];
		r[i]+=n;
		g[i].pb(l[i]);
		g[i].pb(r[i]);
	}
	for(i=1;i<=2*n;i++)
	{
		b.reset();
		if(!dfs(i))rc("NO");
	}
	for(i=1;i<=n;i++)nx[i]=r[vl[i]],sa+=s[vl[i]];
	for(i=n+1;i<=2*n;i++)nx[i]=l[vl[i]],sb+=s[vl[i]];
	cur=sa-sb;
	b.reset();
	for(i=1;i<=2*n;i++)
	{
		if(b[i])continue;
		x=i,sa=sb=0,vec.clear();
		while(!b[x])
		{
			vec.pb(x);
			b[x]=1;
			x=nx[x];
		}
		for(j=(int)vec.size()-1;j>=0;j--)
		{
			if(vec[j]<=n)sa+=s[vl[vec[j]]];
			else sb+=s[vl[vec[j]]];
			if(vec[j]==x)break;
		}
		if(j==-1)continue;
		if(2*(sb-sa)>0)
		{
			cur+=2*(sb-sa);
			vc.pb(2*(sb-sa));
		}
		else vc.pb(-2*(sb-sa));
	}
	if(cur<-k)rc("NO");
	if(cur<=k)rc("YES");
	f[cur+k]=1;
	for(i=0;i<(int)vc.size();i++)
	{
		f|=(f>>vc[i]);
	}
	for(i=0;i<=2*k;i++)if(f[i])rc("YES");
	cout<<"NO"<<endl;
	return 0;
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	2424 KB	Output is correct
2	Correct	4 ms	2168 KB	Output is correct
3	Correct	4 ms	2168 KB	Output is correct
4	Correct	4 ms	2296 KB	Output is correct
5	Correct	4 ms	2168 KB	Output is correct
6	Correct	4 ms	2168 KB	Output is correct
7	Correct	5 ms	2168 KB	Output is correct
8	Correct	4 ms	2168 KB	Output is correct
9	Correct	4 ms	2168 KB	Output is correct
10	Correct	5 ms	2168 KB	Output is correct
11	Correct	4 ms	2168 KB	Output is correct
12	Correct	5 ms	2168 KB	Output is correct
13	Correct	13 ms	2168 KB	Output is correct
14	Correct	4 ms	2296 KB	Output is correct
15	Correct	4 ms	2168 KB	Output is correct
16	Correct	4 ms	2296 KB	Output is correct
17	Correct	4 ms	2168 KB	Output is correct
18	Correct	4 ms	2168 KB	Output is correct
19	Correct	4 ms	2296 KB	Output is correct
20	Correct	3 ms	1784 KB	Output is correct
21	Correct	3 ms	1784 KB	Output is correct
22	Correct	3 ms	1784 KB	Output is correct
23	Correct	4 ms	2168 KB	Output is correct
24	Correct	4 ms	2172 KB	Output is correct
25	Correct	4 ms	2168 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	2424 KB	Output is correct
2	Correct	4 ms	2168 KB	Output is correct
3	Correct	4 ms	2168 KB	Output is correct
4	Correct	4 ms	2296 KB	Output is correct
5	Correct	4 ms	2168 KB	Output is correct
6	Correct	4 ms	2168 KB	Output is correct
7	Correct	5 ms	2168 KB	Output is correct
8	Correct	4 ms	2168 KB	Output is correct
9	Correct	4 ms	2168 KB	Output is correct
10	Correct	5 ms	2168 KB	Output is correct
11	Correct	4 ms	2168 KB	Output is correct
12	Correct	5 ms	2168 KB	Output is correct
13	Correct	13 ms	2168 KB	Output is correct
14	Correct	4 ms	2296 KB	Output is correct
15	Correct	4 ms	2168 KB	Output is correct
16	Correct	4 ms	2296 KB	Output is correct
17	Correct	4 ms	2168 KB	Output is correct
18	Correct	4 ms	2168 KB	Output is correct
19	Correct	4 ms	2296 KB	Output is correct
20	Correct	3 ms	1784 KB	Output is correct
21	Correct	3 ms	1784 KB	Output is correct
22	Correct	3 ms	1784 KB	Output is correct
23	Correct	4 ms	2168 KB	Output is correct
24	Correct	4 ms	2172 KB	Output is correct
25	Correct	4 ms	2168 KB	Output is correct
26	Correct	138 ms	2528 KB	Output is correct
27	Correct	20 ms	2424 KB	Output is correct
28	Correct	135 ms	2552 KB	Output is correct
29	Correct	21 ms	2552 KB	Output is correct
30	Correct	134 ms	2520 KB	Output is correct
31	Correct	21 ms	2424 KB	Output is correct
32	Correct	136 ms	2552 KB	Output is correct
33	Correct	21 ms	2516 KB	Output is correct
34	Correct	14 ms	2424 KB	Output is correct
35	Correct	21 ms	2552 KB	Output is correct
36	Correct	134 ms	2520 KB	Output is correct
37	Correct	21 ms	2424 KB	Output is correct
38	Correct	137 ms	2520 KB	Output is correct
39	Correct	21 ms	2424 KB	Output is correct
40	Correct	136 ms	2552 KB	Output is correct
41	Correct	20 ms	2552 KB	Output is correct
42	Correct	136 ms	2560 KB	Output is correct
43	Correct	21 ms	2424 KB	Output is correct
44	Correct	132 ms	2552 KB	Output is correct
45	Correct	20 ms	2424 KB	Output is correct
46	Correct	137 ms	2552 KB	Output is correct
47	Correct	5 ms	2040 KB	Output is correct
48	Correct	6 ms	2040 KB	Output is correct
49	Correct	6 ms	2044 KB	Output is correct
50	Correct	139 ms	2552 KB	Output is correct
51	Correct	139 ms	2424 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	15 ms	3192 KB	Output is correct
2	Correct	13 ms	2936 KB	Output is correct
3	Correct	15 ms	3064 KB	Output is correct
4	Correct	13 ms	3004 KB	Output is correct
5	Correct	16 ms	3192 KB	Output is correct
6	Correct	13 ms	2936 KB	Output is correct
7	Correct	15 ms	3136 KB	Output is correct
8	Correct	13 ms	2936 KB	Output is correct
9	Correct	15 ms	3156 KB	Output is correct
10	Correct	13 ms	3064 KB	Output is correct
11	Correct	15 ms	3064 KB	Output is correct
12	Correct	13 ms	2936 KB	Output is correct
13	Correct	15 ms	3064 KB	Output is correct
14	Correct	16 ms	3064 KB	Output is correct
15	Correct	13 ms	2936 KB	Output is correct
16	Correct	15 ms	3064 KB	Output is correct
17	Correct	13 ms	3064 KB	Output is correct
18	Correct	15 ms	3192 KB	Output is correct
19	Correct	12 ms	2936 KB	Output is correct
20	Correct	15 ms	3196 KB	Output is correct
21	Correct	13 ms	3064 KB	Output is correct
22	Correct	16 ms	3064 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	5 ms	2424 KB	Output is correct
2	Correct	4 ms	2168 KB	Output is correct
3	Correct	4 ms	2168 KB	Output is correct
4	Correct	4 ms	2296 KB	Output is correct
5	Correct	4 ms	2168 KB	Output is correct
6	Correct	4 ms	2168 KB	Output is correct
7	Correct	5 ms	2168 KB	Output is correct
8	Correct	4 ms	2168 KB	Output is correct
9	Correct	4 ms	2168 KB	Output is correct
10	Correct	5 ms	2168 KB	Output is correct
11	Correct	4 ms	2168 KB	Output is correct
12	Correct	5 ms	2168 KB	Output is correct
13	Correct	13 ms	2168 KB	Output is correct
14	Correct	4 ms	2296 KB	Output is correct
15	Correct	4 ms	2168 KB	Output is correct
16	Correct	4 ms	2296 KB	Output is correct
17	Correct	4 ms	2168 KB	Output is correct
18	Correct	4 ms	2168 KB	Output is correct
19	Correct	4 ms	2296 KB	Output is correct
20	Correct	3 ms	1784 KB	Output is correct
21	Correct	3 ms	1784 KB	Output is correct
22	Correct	3 ms	1784 KB	Output is correct
23	Correct	4 ms	2168 KB	Output is correct
24	Correct	4 ms	2172 KB	Output is correct
25	Correct	4 ms	2168 KB	Output is correct
26	Correct	138 ms	2528 KB	Output is correct
27	Correct	20 ms	2424 KB	Output is correct
28	Correct	135 ms	2552 KB	Output is correct
29	Correct	21 ms	2552 KB	Output is correct
30	Correct	134 ms	2520 KB	Output is correct
31	Correct	21 ms	2424 KB	Output is correct
32	Correct	136 ms	2552 KB	Output is correct
33	Correct	21 ms	2516 KB	Output is correct
34	Correct	14 ms	2424 KB	Output is correct
35	Correct	21 ms	2552 KB	Output is correct
36	Correct	134 ms	2520 KB	Output is correct
37	Correct	21 ms	2424 KB	Output is correct
38	Correct	137 ms	2520 KB	Output is correct
39	Correct	21 ms	2424 KB	Output is correct
40	Correct	136 ms	2552 KB	Output is correct
41	Correct	20 ms	2552 KB	Output is correct
42	Correct	136 ms	2560 KB	Output is correct
43	Correct	21 ms	2424 KB	Output is correct
44	Correct	132 ms	2552 KB	Output is correct
45	Correct	20 ms	2424 KB	Output is correct
46	Correct	137 ms	2552 KB	Output is correct
47	Correct	5 ms	2040 KB	Output is correct
48	Correct	6 ms	2040 KB	Output is correct
49	Correct	6 ms	2044 KB	Output is correct
50	Correct	139 ms	2552 KB	Output is correct
51	Correct	139 ms	2424 KB	Output is correct
52	Correct	15 ms	3192 KB	Output is correct
53	Correct	13 ms	2936 KB	Output is correct
54	Correct	15 ms	3064 KB	Output is correct
55	Correct	13 ms	3004 KB	Output is correct
56	Correct	16 ms	3192 KB	Output is correct
57	Correct	13 ms	2936 KB	Output is correct
58	Correct	15 ms	3136 KB	Output is correct
59	Correct	13 ms	2936 KB	Output is correct
60	Correct	15 ms	3156 KB	Output is correct
61	Correct	13 ms	3064 KB	Output is correct
62	Correct	15 ms	3064 KB	Output is correct
63	Correct	13 ms	2936 KB	Output is correct
64	Correct	15 ms	3064 KB	Output is correct
65	Correct	16 ms	3064 KB	Output is correct
66	Correct	13 ms	2936 KB	Output is correct
67	Correct	15 ms	3064 KB	Output is correct
68	Correct	13 ms	3064 KB	Output is correct
69	Correct	15 ms	3192 KB	Output is correct
70	Correct	12 ms	2936 KB	Output is correct
71	Correct	15 ms	3196 KB	Output is correct
72	Correct	13 ms	3064 KB	Output is correct
73	Correct	16 ms	3064 KB	Output is correct
74	Correct	2000 ms	6352 KB	Output is correct
75	Correct	108 ms	6136 KB	Output is correct
76	Correct	1999 ms	6424 KB	Output is correct
77	Correct	104 ms	6136 KB	Output is correct
78	Correct	2015 ms	6348 KB	Output is correct
79	Correct	1977 ms	6332 KB	Output is correct
80	Correct	109 ms	6136 KB	Output is correct
81	Correct	113 ms	6136 KB	Output is correct
82	Correct	2025 ms	6392 KB	Output is correct
83	Correct	1977 ms	6348 KB	Output is correct
84	Correct	108 ms	6136 KB	Output is correct
85	Correct	1979 ms	6392 KB	Output is correct
86	Correct	107 ms	6136 KB	Output is correct
87	Correct	1968 ms	6348 KB	Output is correct
88	Correct	106 ms	6136 KB	Output is correct
89	Correct	1982 ms	6344 KB	Output is correct
90	Correct	110 ms	6136 KB	Output is correct
91	Correct	2012 ms	6352 KB	Output is correct
92	Correct	108 ms	6140 KB	Output is correct
93	Correct	2004 ms	6388 KB	Output is correct
94	Correct	36 ms	5368 KB	Output is correct
95	Correct	45 ms	5752 KB	Output is correct
96	Correct	45 ms	5752 KB	Output is correct
97	Correct	2016 ms	6264 KB	Output is correct
98	Correct	2048 ms	6392 KB	Output is correct

답안 #189128

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