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답안 #156338

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
156338 2019-10-05T08:40:56 Z alishahali1382 Tug of War (BOI15_tug) C++14
100 / 100
 1041 ms 10876 KB 
#include <bits/stdc++.h>
#pragma GCC optimize ("O2")
#pragma GCC optimize ("unroll-loops")
//#pragma GCC optimize("no-stack-protector,fast-math")

using namespace std;
typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<pii, int> piii;
typedef pair<ll, ll> pll;
#define debug(x) cerr<<#x<<'='<<(x)<<endl;
#define debugp(x) cerr<<#x<<"= {"<<(x.first)<<", "<<(x.second)<<"}"<<endl;
#define debug2(x, y) cerr<<"{"<<#x<<", "<<#y<<"} = {"<<(x)<<", "<<(y)<<"}"<<endl;
#define debugv(v) cerr<<#v<<" : ";for (auto x:v) cerr<<x<<' ';cerr<<endl;
#define all(x) x.begin(), x.end()
#define pb push_back
#define kill(x) return cout<<x<<'\n', 0;

const ld eps=1e-7;
const int inf=1000000010;
const ll INF=10000000000000010LL;
const int mod = 1000000007;
const int MAXN = 60010, LOG=20;

int n, m, k, u, v, x, y, t, a, b, D;
int L[MAXN], R[MAXN], S[MAXN];
bool mark[MAXN];
set<pii> G[MAXN];
vector<int> knapsack;
bitset<MAXN*10> dp;
queue<int> Q;

int main(){
	ios_base::sync_with_stdio(false);cin.tie(0);cout.tie(0);
	//freopen("input.txt", "r", stdin);
	//freopen("output.txt", "w", stdout);
	cin>>n>>k;
	for (int i=1; i<=2*n; i++){
		cin>>L[i]>>R[i]>>S[i];
		R[i]+=n;
		G[L[i]].insert({R[i], i});
		G[R[i]].insert({L[i], i});
	}
	for (int i=1; i<=2*n; i++) if (G[i].size()<2) Q.push(i);
	while (Q.size()){
		int v=Q.front();
		Q.pop();
		if (mark[v]) continue ;
		mark[v]=1;
		if (G[v].empty()) kill("NO")
		pii p=*G[v].begin();
		G[v].erase(p);
		if (v<=n) D+=S[p.second];
		else D-=S[p.second];
		G[p.first].erase({v, p.second});
		if (G[p.first].size()<2) Q.push(p.first);
	}
	//debug(D)
	/*
	if (abs(D)<=k) kill("YES")
	kill("NO")*/
	
	for (int i=1; i<=2*n; i++) if (G[i].size()){
		int v=i, tmp=0, z=+1;
		while (1){
			pii p=*G[v].begin();
			G[v].erase(p);
			G[p.first].erase({v, p.second});
			tmp+=z*S[p.second];
			z*=-1;
			v=p.first;
			if (v==i) break ;
		}
		if (tmp<0) tmp=-tmp;
		//debug(tmp)
		D-=tmp;
		knapsack.pb(tmp);
	}
	//debug(D)
	//debugv(knapsack)
	dp.set(0);
	for (int x:knapsack) dp|=(dp<<x);
	for (int i=0; i<MAXN*10; i++) if (dp[i] && abs(2*i+D)<=k) kill("YES")
	kill("NO") 
	
	
	return 0;
}
/*
4 1
1 1 1
2 1 2
2 2 8
1 2 2
3 3 5
3 3 2
4 4 1
4 4 2

2 5
1 1 1
1 2 4
2 2 1
2 1 4

*/

Subtask #1
18.0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3420 KB Output is correct
2 Correct 5 ms 3320 KB Output is correct
3 Correct 6 ms 3320 KB Output is correct
4 Correct 5 ms 3320 KB Output is correct
5 Correct 6 ms 3320 KB Output is correct
6 Correct 6 ms 3320 KB Output is correct
7 Correct 5 ms 3320 KB Output is correct
8 Correct 5 ms 3320 KB Output is correct
9 Correct 5 ms 3320 KB Output is correct
10 Correct 6 ms 3320 KB Output is correct
11 Correct 5 ms 3320 KB Output is correct
12 Correct 5 ms 3320 KB Output is correct
13 Correct 5 ms 3448 KB Output is correct
14 Correct 5 ms 3320 KB Output is correct
15 Correct 5 ms 3324 KB Output is correct
16 Correct 6 ms 3320 KB Output is correct
17 Correct 5 ms 3320 KB Output is correct
18 Correct 5 ms 3324 KB Output is correct
19 Correct 5 ms 3436 KB Output is correct
20 Correct 5 ms 3344 KB Output is correct
21 Correct 5 ms 3196 KB Output is correct
22 Correct 5 ms 3320 KB Output is correct
23 Correct 6 ms 3448 KB Output is correct
24 Correct 5 ms 3448 KB Output is correct
25 Correct 6 ms 3320 KB Output is correct

Subtask #2
30.0 / 30.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3420 KB Output is correct
2 Correct 5 ms 3320 KB Output is correct
3 Correct 6 ms 3320 KB Output is correct
4 Correct 5 ms 3320 KB Output is correct
5 Correct 6 ms 3320 KB Output is correct
6 Correct 6 ms 3320 KB Output is correct
7 Correct 5 ms 3320 KB Output is correct
8 Correct 5 ms 3320 KB Output is correct
9 Correct 5 ms 3320 KB Output is correct
10 Correct 6 ms 3320 KB Output is correct
11 Correct 5 ms 3320 KB Output is correct
12 Correct 5 ms 3320 KB Output is correct
13 Correct 5 ms 3448 KB Output is correct
14 Correct 5 ms 3320 KB Output is correct
15 Correct 5 ms 3324 KB Output is correct
16 Correct 6 ms 3320 KB Output is correct
17 Correct 5 ms 3320 KB Output is correct
18 Correct 5 ms 3324 KB Output is correct
19 Correct 5 ms 3436 KB Output is correct
20 Correct 5 ms 3344 KB Output is correct
21 Correct 5 ms 3196 KB Output is correct
22 Correct 5 ms 3320 KB Output is correct
23 Correct 6 ms 3448 KB Output is correct
24 Correct 5 ms 3448 KB Output is correct
25 Correct 6 ms 3320 KB Output is correct
26 Correct 74 ms 3924 KB Output is correct
27 Correct 17 ms 3832 KB Output is correct
28 Correct 73 ms 3832 KB Output is correct
29 Correct 17 ms 3960 KB Output is correct
30 Correct 75 ms 3804 KB Output is correct
31 Correct 17 ms 3832 KB Output is correct
32 Correct 73 ms 3920 KB Output is correct
33 Correct 17 ms 3832 KB Output is correct
34 Correct 12 ms 3832 KB Output is correct
35 Correct 17 ms 3832 KB Output is correct
36 Correct 73 ms 3956 KB Output is correct
37 Correct 18 ms 3960 KB Output is correct
38 Correct 75 ms 3960 KB Output is correct
39 Correct 22 ms 3960 KB Output is correct
40 Correct 72 ms 3832 KB Output is correct
41 Correct 19 ms 3832 KB Output is correct
42 Correct 76 ms 3920 KB Output is correct
43 Correct 19 ms 3932 KB Output is correct
44 Correct 78 ms 3932 KB Output is correct
45 Correct 17 ms 3832 KB Output is correct
46 Correct 73 ms 3832 KB Output is correct
47 Correct 7 ms 3704 KB Output is correct
48 Correct 41 ms 3832 KB Output is correct
49 Correct 41 ms 3832 KB Output is correct
50 Correct 89 ms 3956 KB Output is correct
51 Correct 75 ms 3832 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 207 ms 5880 KB Output is correct
2 Correct 17 ms 5496 KB Output is correct
3 Correct 209 ms 5880 KB Output is correct
4 Correct 18 ms 5496 KB Output is correct
5 Correct 209 ms 6004 KB Output is correct
6 Correct 17 ms 5624 KB Output is correct
7 Correct 204 ms 5880 KB Output is correct
8 Correct 17 ms 5624 KB Output is correct
9 Correct 203 ms 5888 KB Output is correct
10 Correct 16 ms 5624 KB Output is correct
11 Correct 199 ms 6008 KB Output is correct
12 Correct 17 ms 5624 KB Output is correct
13 Correct 200 ms 6008 KB Output is correct
14 Correct 203 ms 5880 KB Output is correct
15 Correct 18 ms 5624 KB Output is correct
16 Correct 230 ms 6012 KB Output is correct
17 Correct 17 ms 5624 KB Output is correct
18 Correct 198 ms 6008 KB Output is correct
19 Correct 17 ms 5496 KB Output is correct
20 Correct 217 ms 5880 KB Output is correct
21 Correct 17 ms 5624 KB Output is correct
22 Correct 111 ms 5884 KB Output is correct

Subtask #4
29.0 / 29.0

# 결과 실행 시간 메모리 Grader output
1 Correct 6 ms 3420 KB Output is correct
2 Correct 5 ms 3320 KB Output is correct
3 Correct 6 ms 3320 KB Output is correct
4 Correct 5 ms 3320 KB Output is correct
5 Correct 6 ms 3320 KB Output is correct
6 Correct 6 ms 3320 KB Output is correct
7 Correct 5 ms 3320 KB Output is correct
8 Correct 5 ms 3320 KB Output is correct
9 Correct 5 ms 3320 KB Output is correct
10 Correct 6 ms 3320 KB Output is correct
11 Correct 5 ms 3320 KB Output is correct
12 Correct 5 ms 3320 KB Output is correct
13 Correct 5 ms 3448 KB Output is correct
14 Correct 5 ms 3320 KB Output is correct
15 Correct 5 ms 3324 KB Output is correct
16 Correct 6 ms 3320 KB Output is correct
17 Correct 5 ms 3320 KB Output is correct
18 Correct 5 ms 3324 KB Output is correct
19 Correct 5 ms 3436 KB Output is correct
20 Correct 5 ms 3344 KB Output is correct
21 Correct 5 ms 3196 KB Output is correct
22 Correct 5 ms 3320 KB Output is correct
23 Correct 6 ms 3448 KB Output is correct
24 Correct 5 ms 3448 KB Output is correct
25 Correct 6 ms 3320 KB Output is correct
26 Correct 74 ms 3924 KB Output is correct
27 Correct 17 ms 3832 KB Output is correct
28 Correct 73 ms 3832 KB Output is correct
29 Correct 17 ms 3960 KB Output is correct
30 Correct 75 ms 3804 KB Output is correct
31 Correct 17 ms 3832 KB Output is correct
32 Correct 73 ms 3920 KB Output is correct
33 Correct 17 ms 3832 KB Output is correct
34 Correct 12 ms 3832 KB Output is correct
35 Correct 17 ms 3832 KB Output is correct
36 Correct 73 ms 3956 KB Output is correct
37 Correct 18 ms 3960 KB Output is correct
38 Correct 75 ms 3960 KB Output is correct
39 Correct 22 ms 3960 KB Output is correct
40 Correct 72 ms 3832 KB Output is correct
41 Correct 19 ms 3832 KB Output is correct
42 Correct 76 ms 3920 KB Output is correct
43 Correct 19 ms 3932 KB Output is correct
44 Correct 78 ms 3932 KB Output is correct
45 Correct 17 ms 3832 KB Output is correct
46 Correct 73 ms 3832 KB Output is correct
47 Correct 7 ms 3704 KB Output is correct
48 Correct 41 ms 3832 KB Output is correct
49 Correct 41 ms 3832 KB Output is correct
50 Correct 89 ms 3956 KB Output is correct
51 Correct 75 ms 3832 KB Output is correct
52 Correct 207 ms 5880 KB Output is correct
53 Correct 17 ms 5496 KB Output is correct
54 Correct 209 ms 5880 KB Output is correct
55 Correct 18 ms 5496 KB Output is correct
56 Correct 209 ms 6004 KB Output is correct
57 Correct 17 ms 5624 KB Output is correct
58 Correct 204 ms 5880 KB Output is correct
59 Correct 17 ms 5624 KB Output is correct
60 Correct 203 ms 5888 KB Output is correct
61 Correct 16 ms 5624 KB Output is correct
62 Correct 199 ms 6008 KB Output is correct
63 Correct 17 ms 5624 KB Output is correct
64 Correct 200 ms 6008 KB Output is correct
65 Correct 203 ms 5880 KB Output is correct
66 Correct 18 ms 5624 KB Output is correct
67 Correct 230 ms 6012 KB Output is correct
68 Correct 17 ms 5624 KB Output is correct
69 Correct 198 ms 6008 KB Output is correct
70 Correct 17 ms 5496 KB Output is correct
71 Correct 217 ms 5880 KB Output is correct
72 Correct 17 ms 5624 KB Output is correct
73 Correct 111 ms 5884 KB Output is correct
74 Correct 1014 ms 10816 KB Output is correct
75 Correct 102 ms 10572 KB Output is correct
76 Correct 1014 ms 10872 KB Output is correct
77 Correct 122 ms 10488 KB Output is correct
78 Correct 1016 ms 10760 KB Output is correct
79 Correct 1027 ms 10724 KB Output is correct
80 Correct 100 ms 10488 KB Output is correct
81 Correct 100 ms 10632 KB Output is correct
82 Correct 1029 ms 10588 KB Output is correct
83 Correct 1031 ms 10860 KB Output is correct
84 Correct 94 ms 10616 KB Output is correct
85 Correct 1030 ms 10744 KB Output is correct
86 Correct 91 ms 10492 KB Output is correct
87 Correct 1012 ms 10784 KB Output is correct
88 Correct 100 ms 10492 KB Output is correct
89 Correct 1014 ms 10872 KB Output is correct
90 Correct 134 ms 10492 KB Output is correct
91 Correct 1010 ms 10744 KB Output is correct
92 Correct 103 ms 10576 KB Output is correct
93 Correct 1004 ms 10720 KB Output is correct
94 Correct 52 ms 10360 KB Output is correct
95 Correct 547 ms 10764 KB Output is correct
96 Correct 546 ms 10876 KB Output is correct
97 Correct 1025 ms 10744 KB Output is correct
98 Correct 1041 ms 10796 KB Output is correct