답안 #941507

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
941507	2024-03-09T03:04:39 Z	Darren0724	Tug of War (BOI15_tug)	C++17	100 / 100	873 ms	6512 KB

#include <bits/stdc++.h>
using namespace std;
#define LCBorz ios_base::sync_with_stdio(false); cin.tie(0);
#define all(x) x.begin(), x.end()
#define endl '\n'
const int N=60005;
const int INF=1e9;
const int M=20*30000;
int32_t main() {
    LCBorz;
    int n,k;cin>>n>>k;
    int m=n*2;
    vector<int> a(m),b(m),c(m),adj[N],deg(m+1);
    for(int i=0;i<m;i++){
        cin>>a[i]>>b[i]>>c[i];
        b[i]+=n;
        adj[a[i]].push_back(i);
        adj[b[i]].push_back(i);
        deg[a[i]]++;
        deg[b[i]]++;
    }
    for(int i=1;i<=m;i++){
        if(deg[i]==0){
            cout<<"NO"<<endl;
            return 0;
        }
    }
    vector<int> vis(m);
    queue<int> q;
    int ptr=M;
    for(int i=1;i<=m;i++){
        if(deg[i]==1){
            q.push(i);
        }
    }
    while(q.size()){
        int p=q.front();
        q.pop();
        for(int j:adj[p]){
            if(vis[j])continue;
            int t=p^a[j]^b[j];
            deg[p]--;
            deg[t]--;
            if(deg[t]==0){
                cout<<"NO"<<endl;
                return 0;
            }
            vis[j]=1;
            ptr+=(p<=n?1:-1)*c[j];
            if(deg[t]==1){
                q.push(t);
            }
        }
    }
    vector<int> cyc;
    for(int i=1;i<=m;i++){
        if(deg[i]==0)continue;
        int p=i,cnt=0;
        while(1){
            int flag=0;
            for(int j:adj[p]){
                if(vis[j])continue;
                vis[j]=1;
                int t=a[j]^b[j]^p;
                deg[p]--;
                deg[t]--;
                p=t;
                cnt+=(p<=n?1:-1)*c[j];
                flag=1;
                break;
            }
            if(!flag)break;
        }
        cnt=abs(cnt);
        ptr-=cnt;
        cyc.push_back(cnt*2);
    }
    bitset<2*M+1> b1;
    b1[ptr]=1;
    for(int j:cyc){
        b1|=b1<<j;
    }
    for(int i=M-k;i<=M+k;i++){
        if(b1[i]){
            cout<<"YES"<<endl;
            return 0;
        }
    }
    cout<<"NO"<<endl;
    
    
    return 0;
}

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2140 KB	Output is correct
2	Correct	2 ms	2140 KB	Output is correct
3	Correct	2 ms	2140 KB	Output is correct
4	Correct	2 ms	2140 KB	Output is correct
5	Correct	2 ms	2140 KB	Output is correct
6	Correct	2 ms	2140 KB	Output is correct
7	Correct	2 ms	2140 KB	Output is correct
8	Correct	2 ms	2152 KB	Output is correct
9	Correct	2 ms	2148 KB	Output is correct
10	Correct	2 ms	2140 KB	Output is correct
11	Correct	2 ms	2140 KB	Output is correct
12	Correct	2 ms	2140 KB	Output is correct
13	Correct	2 ms	2140 KB	Output is correct
14	Correct	2 ms	2140 KB	Output is correct
15	Correct	2 ms	2140 KB	Output is correct
16	Correct	2 ms	2140 KB	Output is correct
17	Correct	2 ms	2136 KB	Output is correct
18	Correct	2 ms	2140 KB	Output is correct
19	Correct	1 ms	2140 KB	Output is correct
20	Correct	2 ms	2156 KB	Output is correct
21	Correct	1 ms	2136 KB	Output is correct
22	Correct	1 ms	2140 KB	Output is correct
23	Correct	2 ms	2276 KB	Output is correct
24	Correct	2 ms	2140 KB	Output is correct
25	Correct	2 ms	2140 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2140 KB	Output is correct
2	Correct	2 ms	2140 KB	Output is correct
3	Correct	2 ms	2140 KB	Output is correct
4	Correct	2 ms	2140 KB	Output is correct
5	Correct	2 ms	2140 KB	Output is correct
6	Correct	2 ms	2140 KB	Output is correct
7	Correct	2 ms	2140 KB	Output is correct
8	Correct	2 ms	2152 KB	Output is correct
9	Correct	2 ms	2148 KB	Output is correct
10	Correct	2 ms	2140 KB	Output is correct
11	Correct	2 ms	2140 KB	Output is correct
12	Correct	2 ms	2140 KB	Output is correct
13	Correct	2 ms	2140 KB	Output is correct
14	Correct	2 ms	2140 KB	Output is correct
15	Correct	2 ms	2140 KB	Output is correct
16	Correct	2 ms	2140 KB	Output is correct
17	Correct	2 ms	2136 KB	Output is correct
18	Correct	2 ms	2140 KB	Output is correct
19	Correct	1 ms	2140 KB	Output is correct
20	Correct	2 ms	2156 KB	Output is correct
21	Correct	1 ms	2136 KB	Output is correct
22	Correct	1 ms	2140 KB	Output is correct
23	Correct	2 ms	2276 KB	Output is correct
24	Correct	2 ms	2140 KB	Output is correct
25	Correct	2 ms	2140 KB	Output is correct
26	Correct	56 ms	2392 KB	Output is correct
27	Correct	11 ms	2396 KB	Output is correct
28	Correct	57 ms	2652 KB	Output is correct
29	Correct	14 ms	2396 KB	Output is correct
30	Correct	67 ms	2544 KB	Output is correct
31	Correct	10 ms	2396 KB	Output is correct
32	Correct	58 ms	2544 KB	Output is correct
33	Correct	10 ms	2396 KB	Output is correct
34	Correct	6 ms	2392 KB	Output is correct
35	Correct	10 ms	2400 KB	Output is correct
36	Correct	57 ms	2396 KB	Output is correct
37	Correct	10 ms	2396 KB	Output is correct
38	Correct	57 ms	2396 KB	Output is correct
39	Correct	10 ms	2396 KB	Output is correct
40	Correct	57 ms	2392 KB	Output is correct
41	Correct	10 ms	2396 KB	Output is correct
42	Correct	58 ms	2396 KB	Output is correct
43	Correct	11 ms	2560 KB	Output is correct
44	Correct	59 ms	2392 KB	Output is correct
45	Correct	10 ms	2560 KB	Output is correct
46	Correct	57 ms	2396 KB	Output is correct
47	Correct	3 ms	2136 KB	Output is correct
48	Correct	30 ms	2396 KB	Output is correct
49	Correct	30 ms	2396 KB	Output is correct
50	Correct	59 ms	2396 KB	Output is correct
51	Correct	67 ms	2396 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	158 ms	3420 KB	Output is correct
2	Correct	7 ms	3164 KB	Output is correct
3	Correct	155 ms	3636 KB	Output is correct
4	Correct	6 ms	3160 KB	Output is correct
5	Correct	154 ms	3416 KB	Output is correct
6	Correct	8 ms	3160 KB	Output is correct
7	Correct	158 ms	3416 KB	Output is correct
8	Correct	6 ms	3164 KB	Output is correct
9	Correct	153 ms	3420 KB	Output is correct
10	Correct	6 ms	3160 KB	Output is correct
11	Correct	155 ms	3468 KB	Output is correct
12	Correct	6 ms	3164 KB	Output is correct
13	Correct	156 ms	3428 KB	Output is correct
14	Correct	157 ms	3420 KB	Output is correct
15	Correct	8 ms	3164 KB	Output is correct
16	Correct	161 ms	3420 KB	Output is correct
17	Correct	7 ms	3164 KB	Output is correct
18	Correct	158 ms	3632 KB	Output is correct
19	Correct	6 ms	3164 KB	Output is correct
20	Correct	154 ms	3420 KB	Output is correct
21	Correct	6 ms	3160 KB	Output is correct
22	Correct	83 ms	3420 KB	Output is correct

Subtask #4
29.0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	2 ms	2140 KB	Output is correct
2	Correct	2 ms	2140 KB	Output is correct
3	Correct	2 ms	2140 KB	Output is correct
4	Correct	2 ms	2140 KB	Output is correct
5	Correct	2 ms	2140 KB	Output is correct
6	Correct	2 ms	2140 KB	Output is correct
7	Correct	2 ms	2140 KB	Output is correct
8	Correct	2 ms	2152 KB	Output is correct
9	Correct	2 ms	2148 KB	Output is correct
10	Correct	2 ms	2140 KB	Output is correct
11	Correct	2 ms	2140 KB	Output is correct
12	Correct	2 ms	2140 KB	Output is correct
13	Correct	2 ms	2140 KB	Output is correct
14	Correct	2 ms	2140 KB	Output is correct
15	Correct	2 ms	2140 KB	Output is correct
16	Correct	2 ms	2140 KB	Output is correct
17	Correct	2 ms	2136 KB	Output is correct
18	Correct	2 ms	2140 KB	Output is correct
19	Correct	1 ms	2140 KB	Output is correct
20	Correct	2 ms	2156 KB	Output is correct
21	Correct	1 ms	2136 KB	Output is correct
22	Correct	1 ms	2140 KB	Output is correct
23	Correct	2 ms	2276 KB	Output is correct
24	Correct	2 ms	2140 KB	Output is correct
25	Correct	2 ms	2140 KB	Output is correct
26	Correct	56 ms	2392 KB	Output is correct
27	Correct	11 ms	2396 KB	Output is correct
28	Correct	57 ms	2652 KB	Output is correct
29	Correct	14 ms	2396 KB	Output is correct
30	Correct	67 ms	2544 KB	Output is correct
31	Correct	10 ms	2396 KB	Output is correct
32	Correct	58 ms	2544 KB	Output is correct
33	Correct	10 ms	2396 KB	Output is correct
34	Correct	6 ms	2392 KB	Output is correct
35	Correct	10 ms	2400 KB	Output is correct
36	Correct	57 ms	2396 KB	Output is correct
37	Correct	10 ms	2396 KB	Output is correct
38	Correct	57 ms	2396 KB	Output is correct
39	Correct	10 ms	2396 KB	Output is correct
40	Correct	57 ms	2392 KB	Output is correct
41	Correct	10 ms	2396 KB	Output is correct
42	Correct	58 ms	2396 KB	Output is correct
43	Correct	11 ms	2560 KB	Output is correct
44	Correct	59 ms	2392 KB	Output is correct
45	Correct	10 ms	2560 KB	Output is correct
46	Correct	57 ms	2396 KB	Output is correct
47	Correct	3 ms	2136 KB	Output is correct
48	Correct	30 ms	2396 KB	Output is correct
49	Correct	30 ms	2396 KB	Output is correct
50	Correct	59 ms	2396 KB	Output is correct
51	Correct	67 ms	2396 KB	Output is correct
52	Correct	158 ms	3420 KB	Output is correct
53	Correct	7 ms	3164 KB	Output is correct
54	Correct	155 ms	3636 KB	Output is correct
55	Correct	6 ms	3160 KB	Output is correct
56	Correct	154 ms	3416 KB	Output is correct
57	Correct	8 ms	3160 KB	Output is correct
58	Correct	158 ms	3416 KB	Output is correct
59	Correct	6 ms	3164 KB	Output is correct
60	Correct	153 ms	3420 KB	Output is correct
61	Correct	6 ms	3160 KB	Output is correct
62	Correct	155 ms	3468 KB	Output is correct
63	Correct	6 ms	3164 KB	Output is correct
64	Correct	156 ms	3428 KB	Output is correct
65	Correct	157 ms	3420 KB	Output is correct
66	Correct	8 ms	3164 KB	Output is correct
67	Correct	161 ms	3420 KB	Output is correct
68	Correct	7 ms	3164 KB	Output is correct
69	Correct	158 ms	3632 KB	Output is correct
70	Correct	6 ms	3164 KB	Output is correct
71	Correct	154 ms	3420 KB	Output is correct
72	Correct	6 ms	3160 KB	Output is correct
73	Correct	83 ms	3420 KB	Output is correct
74	Correct	835 ms	6408 KB	Output is correct
75	Correct	61 ms	5980 KB	Output is correct
76	Correct	834 ms	6408 KB	Output is correct
77	Correct	50 ms	6032 KB	Output is correct
78	Correct	843 ms	6512 KB	Output is correct
79	Correct	844 ms	6404 KB	Output is correct
80	Correct	49 ms	5980 KB	Output is correct
81	Correct	56 ms	6164 KB	Output is correct
82	Correct	850 ms	6416 KB	Output is correct
83	Correct	851 ms	6404 KB	Output is correct
84	Correct	52 ms	5976 KB	Output is correct
85	Correct	832 ms	6408 KB	Output is correct
86	Correct	57 ms	5996 KB	Output is correct
87	Correct	865 ms	6412 KB	Output is correct
88	Correct	51 ms	5976 KB	Output is correct
89	Correct	873 ms	6416 KB	Output is correct
90	Correct	50 ms	5968 KB	Output is correct
91	Correct	856 ms	6412 KB	Output is correct
92	Correct	58 ms	6232 KB	Output is correct
93	Correct	829 ms	6480 KB	Output is correct
94	Correct	17 ms	5468 KB	Output is correct
95	Correct	442 ms	6340 KB	Output is correct
96	Correct	437 ms	6340 KB	Output is correct
97	Correct	857 ms	6480 KB	Output is correct
98	Correct	866 ms	6404 KB	Output is correct

답안 #941507

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