답안 #753840

#	제출 시각	아이디	문제	언어	결과	실행 시간	메모리
753840	2023-06-06T07:27:27 Z	vjudge1	Tug of War (BOI15_tug)	C++17	71 / 100	3000 ms	17184 KB

#include<bits/stdc++.h>
#define doi(i) if(!adj[i].size()) {cout << "NO\n";return 0;}if(adj[i].size()<2) {q.push(i);sum+=(i>n/2?1:-1)*((*begin(adj[i])).second);}
#define shift(x) ((x)>0?bt<<(x):bt>>(-x))
using namespace std;
multiset<pair<int, int>> adj[200100];
queue<int> q;
bool del[200100];
bitset<1200000> bt;
int tot;
void dfs(int n, int N) {
	if (del[n]) return;
	del[n] = true;
	int nxt, cost;
	tie(nxt, cost) = *adj[n].begin();
    if(nxt>N)
	    tot += cost;
    else
        tot-=cost;
	if (!del[nxt]) {
		adj[nxt].erase(adj[nxt].find({n, cost}));
		adj[n].clear();
		dfs(nxt, N);
	}
}
int main() {
    cin.sync_with_stdio(false);
    cin.tie(nullptr);
    int n, k, sum = 0;
    cin >> n >> k;
    n*=2;
    for(int i = 1; i <= n; i++) {
        int x, y, w;
        cin >> x >> y >> w;
        y+=n/2;
        adj[x].insert({y,w});
        adj[y].insert({x,w});
    }
    for(int i = 1; i <= n; i++) {
        doi(i);
    }
    while(q.size()) {
        int x = q.front(), i = (*adj[x].begin()).first, w= (*adj[x].begin()).second;
        del[x] = 1;
        q.pop();
        adj[i].erase(adj[i].find({x,w}));
        doi(i);
    }
    bt[sum+600000]=1;
    for(int i = 1; i <= n; i++) {
        if(!del[i]) {
            tot = 0;
            adj[i].erase(adj[i].begin());
            dfs(i, n/2);
            bt = shift(tot)|shift(-tot);
        }
    }
    for(int i = -k; i <= k; i++) {
        if(bt[600000+i]) {
            cout << "YES\n";
            return 0;
        }
    }
    cout << "NO\n";
}

Compilation message

tug.cpp: In function 'void dfs(int, int)':
tug.cpp:17:5: warning: this 'else' clause does not guard... [-Wmisleading-indentation]
   17 |     else
      |     ^~~~
tug.cpp:19:2: note: ...this statement, but the latter is misleadingly indented as if it were guarded by the 'else'
   19 |  if (!del[nxt]) {
      |  ^~

Subtask #1
18.0 / 18.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10452 KB	Output is correct
2	Correct	8 ms	10428 KB	Output is correct
3	Correct	7 ms	10412 KB	Output is correct
4	Correct	7 ms	10452 KB	Output is correct
5	Correct	6 ms	10452 KB	Output is correct
6	Correct	7 ms	10424 KB	Output is correct
7	Correct	6 ms	10452 KB	Output is correct
8	Correct	7 ms	10452 KB	Output is correct
9	Correct	8 ms	10420 KB	Output is correct
10	Correct	7 ms	10452 KB	Output is correct
11	Correct	6 ms	10452 KB	Output is correct
12	Correct	8 ms	10408 KB	Output is correct
13	Correct	6 ms	10424 KB	Output is correct
14	Correct	7 ms	10452 KB	Output is correct
15	Correct	8 ms	10428 KB	Output is correct
16	Correct	7 ms	10452 KB	Output is correct
17	Correct	6 ms	10452 KB	Output is correct
18	Correct	7 ms	10376 KB	Output is correct
19	Correct	7 ms	10452 KB	Output is correct
20	Correct	7 ms	10452 KB	Output is correct
21	Correct	5 ms	10068 KB	Output is correct
22	Correct	6 ms	10416 KB	Output is correct
23	Correct	7 ms	10452 KB	Output is correct
24	Correct	6 ms	10420 KB	Output is correct
25	Correct	6 ms	10452 KB	Output is correct

Subtask #2
30.0 / 30.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10452 KB	Output is correct
2	Correct	8 ms	10428 KB	Output is correct
3	Correct	7 ms	10412 KB	Output is correct
4	Correct	7 ms	10452 KB	Output is correct
5	Correct	6 ms	10452 KB	Output is correct
6	Correct	7 ms	10424 KB	Output is correct
7	Correct	6 ms	10452 KB	Output is correct
8	Correct	7 ms	10452 KB	Output is correct
9	Correct	8 ms	10420 KB	Output is correct
10	Correct	7 ms	10452 KB	Output is correct
11	Correct	6 ms	10452 KB	Output is correct
12	Correct	8 ms	10408 KB	Output is correct
13	Correct	6 ms	10424 KB	Output is correct
14	Correct	7 ms	10452 KB	Output is correct
15	Correct	8 ms	10428 KB	Output is correct
16	Correct	7 ms	10452 KB	Output is correct
17	Correct	6 ms	10452 KB	Output is correct
18	Correct	7 ms	10376 KB	Output is correct
19	Correct	7 ms	10452 KB	Output is correct
20	Correct	7 ms	10452 KB	Output is correct
21	Correct	5 ms	10068 KB	Output is correct
22	Correct	6 ms	10416 KB	Output is correct
23	Correct	7 ms	10452 KB	Output is correct
24	Correct	6 ms	10420 KB	Output is correct
25	Correct	6 ms	10452 KB	Output is correct
26	Correct	137 ms	10864 KB	Output is correct
27	Correct	27 ms	10852 KB	Output is correct
28	Correct	141 ms	10864 KB	Output is correct
29	Correct	28 ms	10860 KB	Output is correct
30	Correct	152 ms	10864 KB	Output is correct
31	Correct	27 ms	10836 KB	Output is correct
32	Correct	137 ms	10940 KB	Output is correct
33	Correct	37 ms	10860 KB	Output is correct
34	Correct	17 ms	10812 KB	Output is correct
35	Correct	25 ms	10864 KB	Output is correct
36	Correct	133 ms	10864 KB	Output is correct
37	Correct	29 ms	10792 KB	Output is correct
38	Correct	147 ms	10864 KB	Output is correct
39	Correct	33 ms	10860 KB	Output is correct
40	Correct	159 ms	10836 KB	Output is correct
41	Correct	28 ms	10864 KB	Output is correct
42	Correct	171 ms	10880 KB	Output is correct
43	Correct	26 ms	10792 KB	Output is correct
44	Correct	146 ms	10864 KB	Output is correct
45	Correct	25 ms	10792 KB	Output is correct
46	Correct	215 ms	10872 KB	Output is correct
47	Correct	11 ms	10560 KB	Output is correct
48	Correct	95 ms	10812 KB	Output is correct
49	Correct	80 ms	10868 KB	Output is correct
50	Correct	215 ms	10872 KB	Output is correct
51	Correct	153 ms	10864 KB	Output is correct

Subtask #3
23.0 / 23.0

#	결과	실행 시간	메모리	Grader output
1	Correct	411 ms	12580 KB	Output is correct
2	Correct	22 ms	12216 KB	Output is correct
3	Correct	464 ms	12568 KB	Output is correct
4	Correct	17 ms	12264 KB	Output is correct
5	Correct	524 ms	12564 KB	Output is correct
6	Correct	22 ms	12244 KB	Output is correct
7	Correct	485 ms	12516 KB	Output is correct
8	Correct	16 ms	12160 KB	Output is correct
9	Correct	525 ms	12564 KB	Output is correct
10	Correct	17 ms	12276 KB	Output is correct
11	Correct	504 ms	12568 KB	Output is correct
12	Correct	18 ms	12244 KB	Output is correct
13	Correct	515 ms	12560 KB	Output is correct
14	Correct	535 ms	12568 KB	Output is correct
15	Correct	24 ms	12232 KB	Output is correct
16	Correct	525 ms	12564 KB	Output is correct
17	Correct	16 ms	12156 KB	Output is correct
18	Correct	492 ms	12564 KB	Output is correct
19	Correct	16 ms	12264 KB	Output is correct
20	Correct	544 ms	12564 KB	Output is correct
21	Correct	16 ms	12244 KB	Output is correct
22	Correct	265 ms	12596 KB	Output is correct

Subtask #4
0 / 29.0

#	결과	실행 시간	메모리	Grader output
1	Correct	7 ms	10452 KB	Output is correct
2	Correct	8 ms	10428 KB	Output is correct
3	Correct	7 ms	10412 KB	Output is correct
4	Correct	7 ms	10452 KB	Output is correct
5	Correct	6 ms	10452 KB	Output is correct
6	Correct	7 ms	10424 KB	Output is correct
7	Correct	6 ms	10452 KB	Output is correct
8	Correct	7 ms	10452 KB	Output is correct
9	Correct	8 ms	10420 KB	Output is correct
10	Correct	7 ms	10452 KB	Output is correct
11	Correct	6 ms	10452 KB	Output is correct
12	Correct	8 ms	10408 KB	Output is correct
13	Correct	6 ms	10424 KB	Output is correct
14	Correct	7 ms	10452 KB	Output is correct
15	Correct	8 ms	10428 KB	Output is correct
16	Correct	7 ms	10452 KB	Output is correct
17	Correct	6 ms	10452 KB	Output is correct
18	Correct	7 ms	10376 KB	Output is correct
19	Correct	7 ms	10452 KB	Output is correct
20	Correct	7 ms	10452 KB	Output is correct
21	Correct	5 ms	10068 KB	Output is correct
22	Correct	6 ms	10416 KB	Output is correct
23	Correct	7 ms	10452 KB	Output is correct
24	Correct	6 ms	10420 KB	Output is correct
25	Correct	6 ms	10452 KB	Output is correct
26	Correct	137 ms	10864 KB	Output is correct
27	Correct	27 ms	10852 KB	Output is correct
28	Correct	141 ms	10864 KB	Output is correct
29	Correct	28 ms	10860 KB	Output is correct
30	Correct	152 ms	10864 KB	Output is correct
31	Correct	27 ms	10836 KB	Output is correct
32	Correct	137 ms	10940 KB	Output is correct
33	Correct	37 ms	10860 KB	Output is correct
34	Correct	17 ms	10812 KB	Output is correct
35	Correct	25 ms	10864 KB	Output is correct
36	Correct	133 ms	10864 KB	Output is correct
37	Correct	29 ms	10792 KB	Output is correct
38	Correct	147 ms	10864 KB	Output is correct
39	Correct	33 ms	10860 KB	Output is correct
40	Correct	159 ms	10836 KB	Output is correct
41	Correct	28 ms	10864 KB	Output is correct
42	Correct	171 ms	10880 KB	Output is correct
43	Correct	26 ms	10792 KB	Output is correct
44	Correct	146 ms	10864 KB	Output is correct
45	Correct	25 ms	10792 KB	Output is correct
46	Correct	215 ms	10872 KB	Output is correct
47	Correct	11 ms	10560 KB	Output is correct
48	Correct	95 ms	10812 KB	Output is correct
49	Correct	80 ms	10868 KB	Output is correct
50	Correct	215 ms	10872 KB	Output is correct
51	Correct	153 ms	10864 KB	Output is correct
52	Correct	411 ms	12580 KB	Output is correct
53	Correct	22 ms	12216 KB	Output is correct
54	Correct	464 ms	12568 KB	Output is correct
55	Correct	17 ms	12264 KB	Output is correct
56	Correct	524 ms	12564 KB	Output is correct
57	Correct	22 ms	12244 KB	Output is correct
58	Correct	485 ms	12516 KB	Output is correct
59	Correct	16 ms	12160 KB	Output is correct
60	Correct	525 ms	12564 KB	Output is correct
61	Correct	17 ms	12276 KB	Output is correct
62	Correct	504 ms	12568 KB	Output is correct
63	Correct	18 ms	12244 KB	Output is correct
64	Correct	515 ms	12560 KB	Output is correct
65	Correct	535 ms	12568 KB	Output is correct
66	Correct	24 ms	12232 KB	Output is correct
67	Correct	525 ms	12564 KB	Output is correct
68	Correct	16 ms	12156 KB	Output is correct
69	Correct	492 ms	12564 KB	Output is correct
70	Correct	16 ms	12264 KB	Output is correct
71	Correct	544 ms	12564 KB	Output is correct
72	Correct	16 ms	12244 KB	Output is correct
73	Correct	265 ms	12596 KB	Output is correct
74	Correct	2542 ms	16944 KB	Output is correct
75	Correct	161 ms	16928 KB	Output is correct
76	Correct	2502 ms	16932 KB	Output is correct
77	Correct	149 ms	16936 KB	Output is correct
78	Correct	2480 ms	16940 KB	Output is correct
79	Correct	2269 ms	16920 KB	Output is correct
80	Correct	125 ms	16936 KB	Output is correct
81	Correct	167 ms	17000 KB	Output is correct
82	Correct	2161 ms	16920 KB	Output is correct
83	Correct	2510 ms	17016 KB	Output is correct
84	Correct	152 ms	16844 KB	Output is correct
85	Correct	2369 ms	17064 KB	Output is correct
86	Correct	142 ms	16936 KB	Output is correct
87	Correct	2509 ms	16948 KB	Output is correct
88	Correct	127 ms	16940 KB	Output is correct
89	Correct	2388 ms	17184 KB	Output is correct
90	Correct	149 ms	16940 KB	Output is correct
91	Execution timed out	3070 ms	16936 KB	Time limit exceeded
92	Halted	0 ms	0 KB	-

답안 #753840

Compilation message

Subtask #1 18.0 / 18.0

Subtask #2 30.0 / 30.0

Subtask #3 23.0 / 23.0

Subtask #4 0 / 29.0

Subtask #1
18.0 / 18.0

Subtask #2
30.0 / 30.0

Subtask #3
23.0 / 23.0

Subtask #4
0 / 29.0