oj.uz

Submission #753840

# Submission time Handle Problem Language Result Execution time Memory
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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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

# Verdict Execution time Memory 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 -