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Submission #189128

# Submission time Handle Problem Language Result Execution time Memory
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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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