답안 #403194

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
403194	2021-05-12T22:28:35 Z	gevacrt	Tug of War (BOI15_tug)	C++17	100 / 100	1659 ms	29756 KB

#include<bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;

typedef vector<int> vi;
typedef pair<int, int> ii;
typedef vector<ii> vii;
typedef vector<vi> vvi;
typedef vector<vii> vvii;

#define INF INT_MAX
#define MOD 1000000007
#define all(x) x.begin(), x.end()

int N, K;
vector<unordered_set<int>> adj; vi S;

int TOT = 0, CNT = 0;
void remove_singular(int x){
    auto u = *adj[x].begin(); adj[x].clear();
    adj[u].erase(x);

    if(x < 3*N) TOT += S[u], CNT++;
    else CNT--;

    auto v = *adj[u].begin(); adj[u].clear();
    adj[v].erase(u);

    if(adj[v].size() == 1) remove_singular(v);    
}

vi vis;
void dfs(int u, int c, int h[]){
    h[c] += S[u]; vis[u] = 1;

    for(auto v : adj[u]){
        if(vis[v]) continue;
        dfs(v, (c+1)%4, h);
    }
}

int main(){
    ios::sync_with_stdio(false);
    cin.tie(NULL);

    cin >> N >> K;

    adj.resize(4*N); S.resize(4*N);
    for(int x = 0; x < 2*N; x++){
        int l, r; cin >> l >> r >> S[x];
        l--, r--; r += N;

        adj[x].insert(2*N+l);
        adj[2*N+l].insert(x);
    
        adj[x].insert(2*N+r);
        adj[2*N+r].insert(x);
    }

    // find single nodes
    for(int x = 2*N; x < 4*N; x++){
        if(adj[x].size() == 1)
            remove_singular(x);
    }

    for(int x = 2*N; x < 4*N; x++){
        if(adj[x].size() != 2 and adj[x].size() != 0){
            cout << "NO" << endl; return 0;
        }
    }
    assert(CNT == 0);

    bitset<600010> KP;
    KP[TOT] = 1;

    vis.resize(4*N);
    for(int x = 0; x < 2*N; x++){
        if(adj[x].empty() or vis[x]) continue;
        int h[4] = {}; dfs(x, 0, h);

        KP = (KP<<h[0]) | (KP<<h[2]);
    }
    
    int SUN = accumulate(all(S), 0);
    for(int i = 0; i < 600010; i++){
        if(KP[i]&1 and abs(SUN-2*i) <= K){
            cout << "YES\n";
            return 0;
        }
    }

    cout << "NO\n";

    return 0;
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	588 KB	Output is correct
2	Correct	2 ms	588 KB	Output is correct
3	Correct	3 ms	588 KB	Output is correct
4	Correct	1 ms	588 KB	Output is correct
5	Correct	2 ms	588 KB	Output is correct
6	Correct	2 ms	588 KB	Output is correct
7	Correct	2 ms	588 KB	Output is correct
8	Correct	2 ms	588 KB	Output is correct
9	Correct	1 ms	588 KB	Output is correct
10	Correct	2 ms	588 KB	Output is correct
11	Correct	1 ms	588 KB	Output is correct
12	Correct	1 ms	588 KB	Output is correct
13	Correct	1 ms	588 KB	Output is correct
14	Correct	1 ms	588 KB	Output is correct
15	Correct	1 ms	588 KB	Output is correct
16	Correct	2 ms	588 KB	Output is correct
17	Correct	1 ms	588 KB	Output is correct
18	Correct	1 ms	588 KB	Output is correct
19	Correct	1 ms	588 KB	Output is correct
20	Correct	1 ms	588 KB	Output is correct
21	Correct	1 ms	588 KB	Output is correct
22	Correct	1 ms	588 KB	Output is correct
23	Correct	2 ms	588 KB	Output is correct
24	Correct	1 ms	588 KB	Output is correct
25	Correct	3 ms	588 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	588 KB	Output is correct
2	Correct	2 ms	588 KB	Output is correct
3	Correct	3 ms	588 KB	Output is correct
4	Correct	1 ms	588 KB	Output is correct
5	Correct	2 ms	588 KB	Output is correct
6	Correct	2 ms	588 KB	Output is correct
7	Correct	2 ms	588 KB	Output is correct
8	Correct	2 ms	588 KB	Output is correct
9	Correct	1 ms	588 KB	Output is correct
10	Correct	2 ms	588 KB	Output is correct
11	Correct	1 ms	588 KB	Output is correct
12	Correct	1 ms	588 KB	Output is correct
13	Correct	1 ms	588 KB	Output is correct
14	Correct	1 ms	588 KB	Output is correct
15	Correct	1 ms	588 KB	Output is correct
16	Correct	2 ms	588 KB	Output is correct
17	Correct	1 ms	588 KB	Output is correct
18	Correct	1 ms	588 KB	Output is correct
19	Correct	1 ms	588 KB	Output is correct
20	Correct	1 ms	588 KB	Output is correct
21	Correct	1 ms	588 KB	Output is correct
22	Correct	1 ms	588 KB	Output is correct
23	Correct	2 ms	588 KB	Output is correct
24	Correct	1 ms	588 KB	Output is correct
25	Correct	3 ms	588 KB	Output is correct
26	Correct	104 ms	2548 KB	Output is correct
27	Correct	24 ms	2508 KB	Output is correct
28	Correct	105 ms	2508 KB	Output is correct
29	Correct	20 ms	2572 KB	Output is correct
30	Correct	101 ms	2556 KB	Output is correct
31	Correct	20 ms	2568 KB	Output is correct
32	Correct	100 ms	2616 KB	Output is correct
33	Correct	20 ms	2568 KB	Output is correct
34	Correct	13 ms	2508 KB	Output is correct
35	Correct	25 ms	2504 KB	Output is correct
36	Correct	99 ms	2508 KB	Output is correct
37	Correct	20 ms	2564 KB	Output is correct
38	Correct	101 ms	2540 KB	Output is correct
39	Correct	22 ms	2568 KB	Output is correct
40	Correct	118 ms	2548 KB	Output is correct
41	Correct	20 ms	2508 KB	Output is correct
42	Correct	101 ms	2544 KB	Output is correct
43	Correct	20 ms	2564 KB	Output is correct
44	Correct	120 ms	2508 KB	Output is correct
45	Correct	20 ms	2564 KB	Output is correct
46	Correct	111 ms	2588 KB	Output is correct
47	Correct	6 ms	2392 KB	Output is correct
48	Correct	53 ms	2508 KB	Output is correct
49	Correct	54 ms	2508 KB	Output is correct
50	Correct	99 ms	2548 KB	Output is correct
51	Correct	100 ms	2552 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	503 ms	10184 KB	Output is correct
2	Correct	32 ms	9668 KB	Output is correct
3	Correct	514 ms	10060 KB	Output is correct
4	Correct	33 ms	9680 KB	Output is correct
5	Correct	519 ms	10072 KB	Output is correct
6	Correct	35 ms	9676 KB	Output is correct
7	Correct	507 ms	10176 KB	Output is correct
8	Correct	33 ms	9716 KB	Output is correct
9	Correct	508 ms	10068 KB	Output is correct
10	Correct	33 ms	9660 KB	Output is correct
11	Correct	503 ms	10072 KB	Output is correct
12	Correct	33 ms	9668 KB	Output is correct
13	Correct	495 ms	10068 KB	Output is correct
14	Correct	521 ms	10072 KB	Output is correct
15	Correct	32 ms	9668 KB	Output is correct
16	Correct	508 ms	10132 KB	Output is correct
17	Correct	32 ms	9676 KB	Output is correct
18	Correct	502 ms	10012 KB	Output is correct
19	Correct	33 ms	9668 KB	Output is correct
20	Correct	520 ms	10100 KB	Output is correct
21	Correct	35 ms	9540 KB	Output is correct
22	Correct	300 ms	10068 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	588 KB	Output is correct
2	Correct	2 ms	588 KB	Output is correct
3	Correct	3 ms	588 KB	Output is correct
4	Correct	1 ms	588 KB	Output is correct
5	Correct	2 ms	588 KB	Output is correct
6	Correct	2 ms	588 KB	Output is correct
7	Correct	2 ms	588 KB	Output is correct
8	Correct	2 ms	588 KB	Output is correct
9	Correct	1 ms	588 KB	Output is correct
10	Correct	2 ms	588 KB	Output is correct
11	Correct	1 ms	588 KB	Output is correct
12	Correct	1 ms	588 KB	Output is correct
13	Correct	1 ms	588 KB	Output is correct
14	Correct	1 ms	588 KB	Output is correct
15	Correct	1 ms	588 KB	Output is correct
16	Correct	2 ms	588 KB	Output is correct
17	Correct	1 ms	588 KB	Output is correct
18	Correct	1 ms	588 KB	Output is correct
19	Correct	1 ms	588 KB	Output is correct
20	Correct	1 ms	588 KB	Output is correct
21	Correct	1 ms	588 KB	Output is correct
22	Correct	1 ms	588 KB	Output is correct
23	Correct	2 ms	588 KB	Output is correct
24	Correct	1 ms	588 KB	Output is correct
25	Correct	3 ms	588 KB	Output is correct
26	Correct	104 ms	2548 KB	Output is correct
27	Correct	24 ms	2508 KB	Output is correct
28	Correct	105 ms	2508 KB	Output is correct
29	Correct	20 ms	2572 KB	Output is correct
30	Correct	101 ms	2556 KB	Output is correct
31	Correct	20 ms	2568 KB	Output is correct
32	Correct	100 ms	2616 KB	Output is correct
33	Correct	20 ms	2568 KB	Output is correct
34	Correct	13 ms	2508 KB	Output is correct
35	Correct	25 ms	2504 KB	Output is correct
36	Correct	99 ms	2508 KB	Output is correct
37	Correct	20 ms	2564 KB	Output is correct
38	Correct	101 ms	2540 KB	Output is correct
39	Correct	22 ms	2568 KB	Output is correct
40	Correct	118 ms	2548 KB	Output is correct
41	Correct	20 ms	2508 KB	Output is correct
42	Correct	101 ms	2544 KB	Output is correct
43	Correct	20 ms	2564 KB	Output is correct
44	Correct	120 ms	2508 KB	Output is correct
45	Correct	20 ms	2564 KB	Output is correct
46	Correct	111 ms	2588 KB	Output is correct
47	Correct	6 ms	2392 KB	Output is correct
48	Correct	53 ms	2508 KB	Output is correct
49	Correct	54 ms	2508 KB	Output is correct
50	Correct	99 ms	2548 KB	Output is correct
51	Correct	100 ms	2552 KB	Output is correct
52	Correct	503 ms	10184 KB	Output is correct
53	Correct	32 ms	9668 KB	Output is correct
54	Correct	514 ms	10060 KB	Output is correct
55	Correct	33 ms	9680 KB	Output is correct
56	Correct	519 ms	10072 KB	Output is correct
57	Correct	35 ms	9676 KB	Output is correct
58	Correct	507 ms	10176 KB	Output is correct
59	Correct	33 ms	9716 KB	Output is correct
60	Correct	508 ms	10068 KB	Output is correct
61	Correct	33 ms	9660 KB	Output is correct
62	Correct	503 ms	10072 KB	Output is correct
63	Correct	33 ms	9668 KB	Output is correct
64	Correct	495 ms	10068 KB	Output is correct
65	Correct	521 ms	10072 KB	Output is correct
66	Correct	32 ms	9668 KB	Output is correct
67	Correct	508 ms	10132 KB	Output is correct
68	Correct	32 ms	9676 KB	Output is correct
69	Correct	502 ms	10012 KB	Output is correct
70	Correct	33 ms	9668 KB	Output is correct
71	Correct	520 ms	10100 KB	Output is correct
72	Correct	35 ms	9540 KB	Output is correct
73	Correct	300 ms	10068 KB	Output is correct
74	Correct	1549 ms	28860 KB	Output is correct
75	Correct	212 ms	28872 KB	Output is correct
76	Correct	1609 ms	28856 KB	Output is correct
77	Correct	186 ms	28816 KB	Output is correct
78	Correct	1558 ms	28852 KB	Output is correct
79	Correct	1622 ms	29668 KB	Output is correct
80	Correct	198 ms	29576 KB	Output is correct
81	Correct	212 ms	29540 KB	Output is correct
82	Correct	1659 ms	29668 KB	Output is correct
83	Correct	1658 ms	29672 KB	Output is correct
84	Correct	193 ms	29664 KB	Output is correct
85	Correct	1552 ms	29664 KB	Output is correct
86	Correct	184 ms	29756 KB	Output is correct
87	Correct	1568 ms	29664 KB	Output is correct
88	Correct	188 ms	29716 KB	Output is correct
89	Correct	1564 ms	29676 KB	Output is correct
90	Correct	198 ms	29668 KB	Output is correct
91	Correct	1571 ms	29664 KB	Output is correct
92	Correct	210 ms	29572 KB	Output is correct
93	Correct	1528 ms	29752 KB	Output is correct
94	Correct	127 ms	28484 KB	Output is correct
95	Correct	867 ms	29668 KB	Output is correct
96	Correct	843 ms	29660 KB	Output is correct
97	Correct	1589 ms	29668 KB	Output is correct
98	Correct	1559 ms	29664 KB	Output is correct

답안 #403194

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