답안 #1109133

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
1109133	2024-11-06T05:06:13 Z	codexistent	Tug of War (BOI15_tug)	C++14	100 / 100	584 ms	35320 KB

#include <bits/stdc++.h>
using namespace std;
#define MAXN 600005
#define FOR(i, a, b) for(int i = a; i <= b; i++)

multiset<pair<int, int>> e[MAXN];
bool v[MAXN];
int n, k, r = 0, r2 = 0;
bitset<MAXN> bs;

void dfs(int node){
    v[node] = true;
    if(!e[node].size()) return;
    int nxt, cost;
    tie(nxt, cost) = *e[node].begin();

    r += cost;
    if(!v[nxt]){
        e[nxt].erase(e[nxt].find({node, -cost}));
        e[node].clear();
        dfs(nxt);
    }
}

int main(){
    cin >> n >> k;
    FOR(i, 1, 2 * n){
        int l, r, s;
        cin >> l >> r >> s;

        e[l].insert({n + r, s}), e[n + r].insert({l, -s});
    }

    queue<int> q;
    FOR(i, 1, 2 * n) {
        if(e[i].size() == 1) q.push(i);
        if(e[i].size() == 0) return cout << "NO" << endl, 0;
    }

    while(q.size()){
        int qi = q.front(); q.pop();
        if(e[qi].size() == 0) return cout << "NO" << endl, 0;
        
        int nxt, cost;
        tie(nxt, cost) = *e[qi].begin();
        r += cost;

        e[qi].clear();
        e[nxt].erase(e[nxt].find({qi, -cost}));
        if(e[nxt].size() == 1) q.push(nxt);
    }

    vector<int> items;
    if(r) items.push_back(abs(r));
    FOR(i, 1, 2 * n){
        if(!v[i] && e[i].size()){
            r = 0;
            e[i].erase(e[i].begin());

            dfs(i);
            if(r) items.push_back(abs(r));
        }
    }
    r2 = accumulate(items.begin(), items.end(), 0);

    bs[0] = 1;
    for(int i : items) bs |= bs << i;
    FOR(i, 0, r2){
        if(bs[i] && abs(2 * i - r2) <= k) return cout << "YES" << endl, 0; 
    }

    return cout << "NO" << endl, 0;
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	29264 KB	Output is correct
2	Correct	8 ms	29264 KB	Output is correct
3	Correct	9 ms	29276 KB	Output is correct
4	Correct	6 ms	29264 KB	Output is correct
5	Correct	6 ms	29136 KB	Output is correct
6	Correct	6 ms	29264 KB	Output is correct
7	Correct	7 ms	29264 KB	Output is correct
8	Correct	7 ms	29264 KB	Output is correct
9	Correct	7 ms	29264 KB	Output is correct
10	Correct	7 ms	29304 KB	Output is correct
11	Correct	7 ms	29264 KB	Output is correct
12	Correct	6 ms	29140 KB	Output is correct
13	Correct	6 ms	29428 KB	Output is correct
14	Correct	7 ms	29264 KB	Output is correct
15	Correct	9 ms	29264 KB	Output is correct
16	Correct	6 ms	29264 KB	Output is correct
17	Correct	7 ms	29276 KB	Output is correct
18	Correct	6 ms	29264 KB	Output is correct
19	Correct	6 ms	29264 KB	Output is correct
20	Correct	6 ms	29140 KB	Output is correct
21	Correct	6 ms	29008 KB	Output is correct
22	Correct	6 ms	29432 KB	Output is correct
23	Correct	6 ms	29264 KB	Output is correct
24	Correct	6 ms	29264 KB	Output is correct
25	Correct	6 ms	29264 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	29264 KB	Output is correct
2	Correct	8 ms	29264 KB	Output is correct
3	Correct	9 ms	29276 KB	Output is correct
4	Correct	6 ms	29264 KB	Output is correct
5	Correct	6 ms	29136 KB	Output is correct
6	Correct	6 ms	29264 KB	Output is correct
7	Correct	7 ms	29264 KB	Output is correct
8	Correct	7 ms	29264 KB	Output is correct
9	Correct	7 ms	29264 KB	Output is correct
10	Correct	7 ms	29304 KB	Output is correct
11	Correct	7 ms	29264 KB	Output is correct
12	Correct	6 ms	29140 KB	Output is correct
13	Correct	6 ms	29428 KB	Output is correct
14	Correct	7 ms	29264 KB	Output is correct
15	Correct	9 ms	29264 KB	Output is correct
16	Correct	6 ms	29264 KB	Output is correct
17	Correct	7 ms	29276 KB	Output is correct
18	Correct	6 ms	29264 KB	Output is correct
19	Correct	6 ms	29264 KB	Output is correct
20	Correct	6 ms	29140 KB	Output is correct
21	Correct	6 ms	29008 KB	Output is correct
22	Correct	6 ms	29432 KB	Output is correct
23	Correct	6 ms	29264 KB	Output is correct
24	Correct	6 ms	29264 KB	Output is correct
25	Correct	6 ms	29264 KB	Output is correct
26	Correct	38 ms	29692 KB	Output is correct
27	Correct	19 ms	29520 KB	Output is correct
28	Correct	39 ms	29520 KB	Output is correct
29	Correct	13 ms	29520 KB	Output is correct
30	Correct	48 ms	29520 KB	Output is correct
31	Correct	13 ms	29708 KB	Output is correct
32	Correct	38 ms	29520 KB	Output is correct
33	Correct	12 ms	29520 KB	Output is correct
34	Correct	10 ms	29520 KB	Output is correct
35	Correct	12 ms	29520 KB	Output is correct
36	Correct	38 ms	29688 KB	Output is correct
37	Correct	12 ms	29520 KB	Output is correct
38	Correct	38 ms	29520 KB	Output is correct
39	Correct	13 ms	29520 KB	Output is correct
40	Correct	38 ms	29520 KB	Output is correct
41	Correct	13 ms	29520 KB	Output is correct
42	Correct	39 ms	29520 KB	Output is correct
43	Correct	12 ms	29520 KB	Output is correct
44	Correct	38 ms	29716 KB	Output is correct
45	Correct	12 ms	29520 KB	Output is correct
46	Correct	45 ms	29520 KB	Output is correct
47	Correct	9 ms	29520 KB	Output is correct
48	Correct	35 ms	29520 KB	Output is correct
49	Correct	26 ms	29692 KB	Output is correct
50	Correct	41 ms	29688 KB	Output is correct
51	Correct	39 ms	29520 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	20 ms	31056 KB	Output is correct
2	Correct	21 ms	31056 KB	Output is correct
3	Correct	22 ms	31056 KB	Output is correct
4	Correct	20 ms	31056 KB	Output is correct
5	Correct	23 ms	30936 KB	Output is correct
6	Correct	23 ms	31056 KB	Output is correct
7	Correct	26 ms	31056 KB	Output is correct
8	Correct	21 ms	31056 KB	Output is correct
9	Correct	20 ms	31060 KB	Output is correct
10	Correct	19 ms	31068 KB	Output is correct
11	Correct	19 ms	31056 KB	Output is correct
12	Correct	21 ms	31056 KB	Output is correct
13	Correct	22 ms	30904 KB	Output is correct
14	Correct	21 ms	31056 KB	Output is correct
15	Correct	19 ms	31056 KB	Output is correct
16	Correct	19 ms	31068 KB	Output is correct
17	Correct	21 ms	31056 KB	Output is correct
18	Correct	24 ms	31016 KB	Output is correct
19	Correct	20 ms	31056 KB	Output is correct
20	Correct	19 ms	31056 KB	Output is correct
21	Correct	19 ms	30988 KB	Output is correct
22	Correct	25 ms	31056 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	29264 KB	Output is correct
2	Correct	8 ms	29264 KB	Output is correct
3	Correct	9 ms	29276 KB	Output is correct
4	Correct	6 ms	29264 KB	Output is correct
5	Correct	6 ms	29136 KB	Output is correct
6	Correct	6 ms	29264 KB	Output is correct
7	Correct	7 ms	29264 KB	Output is correct
8	Correct	7 ms	29264 KB	Output is correct
9	Correct	7 ms	29264 KB	Output is correct
10	Correct	7 ms	29304 KB	Output is correct
11	Correct	7 ms	29264 KB	Output is correct
12	Correct	6 ms	29140 KB	Output is correct
13	Correct	6 ms	29428 KB	Output is correct
14	Correct	7 ms	29264 KB	Output is correct
15	Correct	9 ms	29264 KB	Output is correct
16	Correct	6 ms	29264 KB	Output is correct
17	Correct	7 ms	29276 KB	Output is correct
18	Correct	6 ms	29264 KB	Output is correct
19	Correct	6 ms	29264 KB	Output is correct
20	Correct	6 ms	29140 KB	Output is correct
21	Correct	6 ms	29008 KB	Output is correct
22	Correct	6 ms	29432 KB	Output is correct
23	Correct	6 ms	29264 KB	Output is correct
24	Correct	6 ms	29264 KB	Output is correct
25	Correct	6 ms	29264 KB	Output is correct
26	Correct	38 ms	29692 KB	Output is correct
27	Correct	19 ms	29520 KB	Output is correct
28	Correct	39 ms	29520 KB	Output is correct
29	Correct	13 ms	29520 KB	Output is correct
30	Correct	48 ms	29520 KB	Output is correct
31	Correct	13 ms	29708 KB	Output is correct
32	Correct	38 ms	29520 KB	Output is correct
33	Correct	12 ms	29520 KB	Output is correct
34	Correct	10 ms	29520 KB	Output is correct
35	Correct	12 ms	29520 KB	Output is correct
36	Correct	38 ms	29688 KB	Output is correct
37	Correct	12 ms	29520 KB	Output is correct
38	Correct	38 ms	29520 KB	Output is correct
39	Correct	13 ms	29520 KB	Output is correct
40	Correct	38 ms	29520 KB	Output is correct
41	Correct	13 ms	29520 KB	Output is correct
42	Correct	39 ms	29520 KB	Output is correct
43	Correct	12 ms	29520 KB	Output is correct
44	Correct	38 ms	29716 KB	Output is correct
45	Correct	12 ms	29520 KB	Output is correct
46	Correct	45 ms	29520 KB	Output is correct
47	Correct	9 ms	29520 KB	Output is correct
48	Correct	35 ms	29520 KB	Output is correct
49	Correct	26 ms	29692 KB	Output is correct
50	Correct	41 ms	29688 KB	Output is correct
51	Correct	39 ms	29520 KB	Output is correct
52	Correct	20 ms	31056 KB	Output is correct
53	Correct	21 ms	31056 KB	Output is correct
54	Correct	22 ms	31056 KB	Output is correct
55	Correct	20 ms	31056 KB	Output is correct
56	Correct	23 ms	30936 KB	Output is correct
57	Correct	23 ms	31056 KB	Output is correct
58	Correct	26 ms	31056 KB	Output is correct
59	Correct	21 ms	31056 KB	Output is correct
60	Correct	20 ms	31060 KB	Output is correct
61	Correct	19 ms	31068 KB	Output is correct
62	Correct	19 ms	31056 KB	Output is correct
63	Correct	21 ms	31056 KB	Output is correct
64	Correct	22 ms	30904 KB	Output is correct
65	Correct	21 ms	31056 KB	Output is correct
66	Correct	19 ms	31056 KB	Output is correct
67	Correct	19 ms	31068 KB	Output is correct
68	Correct	21 ms	31056 KB	Output is correct
69	Correct	24 ms	31016 KB	Output is correct
70	Correct	20 ms	31056 KB	Output is correct
71	Correct	19 ms	31056 KB	Output is correct
72	Correct	19 ms	30988 KB	Output is correct
73	Correct	25 ms	31056 KB	Output is correct
74	Correct	523 ms	35144 KB	Output is correct
75	Correct	84 ms	34888 KB	Output is correct
76	Correct	524 ms	35244 KB	Output is correct
77	Correct	74 ms	34892 KB	Output is correct
78	Correct	535 ms	35320 KB	Output is correct
79	Correct	501 ms	35152 KB	Output is correct
80	Correct	72 ms	34896 KB	Output is correct
81	Correct	67 ms	34944 KB	Output is correct
82	Correct	512 ms	35144 KB	Output is correct
83	Correct	517 ms	35208 KB	Output is correct
84	Correct	92 ms	34888 KB	Output is correct
85	Correct	509 ms	35244 KB	Output is correct
86	Correct	64 ms	34888 KB	Output is correct
87	Correct	507 ms	35148 KB	Output is correct
88	Correct	73 ms	34944 KB	Output is correct
89	Correct	516 ms	35144 KB	Output is correct
90	Correct	68 ms	34888 KB	Output is correct
91	Correct	529 ms	35244 KB	Output is correct
92	Correct	70 ms	34888 KB	Output is correct
93	Correct	584 ms	35244 KB	Output is correct
94	Correct	53 ms	34632 KB	Output is correct
95	Correct	333 ms	35008 KB	Output is correct
96	Correct	296 ms	35144 KB	Output is correct
97	Correct	528 ms	35148 KB	Output is correct
98	Correct	541 ms	35244 KB	Output is correct

답안 #1109133

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