oj.uz

Submission #377242

# Submission time Handle Problem Language Result Execution time Memory
377242 2021-03-13T14:14:17 Z saarang123 Relay Marathon (NOI20_relaymarathon) C++17
17 / 100
 5836 ms 112040 KB 
#include <bits/stdc++.h>
using namespace std;
std::mt19937 rng((int) std::chrono::steady_clock::now().time_since_epoch().count());
const int mxn = 100 * 1000 + 3;
const int inf = 1e9 + 2;
vector<array<int, 2>> g[mxn];
int n, m, k;

int magic(vector<int> &src, vector<int> &snk) {
	priority_queue<array<int, 2>, vector<array<int, 2>>, greater<>> pq;
	vector<int> dt(n, inf);
	for(int v : src) {
		dt[v] = 0;
		pq.push({0, v});
	}
	while(!pq.empty()) {
		auto [wt, v] = pq.top();
		pq.pop();
		if(dt[v] != wt)
			continue;
		for(auto &[u, w] : g[v]) {
			if(dt[v] + w < dt[u]) {
				dt[u] = dt[v] + w;
				pq.push({dt[u], u});
			}
		}
	}
	int ret = inf;
	for(int &v : snk)
		ret = min(ret, dt[v]);
	return ret;
}

signed main() {
    std::ios::sync_with_stdio(0);
    std::cout.tie(0);
    std::cin.tie(0);
    #ifdef saarang
    freopen("/home/saarang/Documents/cp/input.txt", "r", stdin);
    freopen("/home/saarang/Documents/cp/output.txt", "w", stdout);
    #endif
    cin >> n >> m >> k;
    for(int u, v, w, i = 0; i < m; i++) {
    	cin >> u >> v >> w;
    	g[--u].push_back({--v, w});
    	g[v].push_back({u, w});
    }
    vector<int> a(k);
    for(int &x : a)
    	cin >> x, x--;
    int ans = inf;
    while(clock() < 5.7 * CLOCKS_PER_SEC) {
    	shuffle(a.begin(), a.end(), rng);
    	vector<int> src[2], snk[2];
    	for(int i = 0; i < k / 2; i++)
    		src[rng() % 2].push_back(a[i]);
    	for(int i = k / 2; i < k; i++) 
    		snk[rng() % 2].push_back(a[i]);
    	ans = min(ans, magic(src[0], snk[0]) + magic(src[1], snk[1]));
    }
    cout << ans << '\n';
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 5700 ms 2752 KB Output is correct
2 Correct 5700 ms 2800 KB Output is correct
3 Correct 5700 ms 2752 KB Output is correct
4 Correct 5700 ms 2748 KB Output is correct
5 Correct 5700 ms 2752 KB Output is correct
6 Correct 5700 ms 2752 KB Output is correct
7 Correct 5700 ms 2804 KB Output is correct
8 Correct 5700 ms 2924 KB Output is correct
9 Correct 5700 ms 2748 KB Output is correct
10 Correct 5700 ms 2748 KB Output is correct
11 Correct 5700 ms 2752 KB Output is correct
12 Correct 5700 ms 2752 KB Output is correct
13 Correct 5700 ms 2796 KB Output is correct
14 Correct 5700 ms 2796 KB Output is correct
15 Correct 5700 ms 2800 KB Output is correct
16 Correct 5700 ms 2752 KB Output is correct
17 Correct 5700 ms 2784 KB Output is correct
18 Correct 5700 ms 2752 KB Output is correct
19 Correct 5700 ms 2804 KB Output is correct
20 Correct 5700 ms 2768 KB Output is correct
21 Correct 5700 ms 2796 KB Output is correct
22 Correct 5700 ms 2748 KB Output is correct
23 Correct 5700 ms 2776 KB Output is correct
24 Correct 5700 ms 2752 KB Output is correct
25 Correct 5700 ms 2796 KB Output is correct
26 Correct 5700 ms 2752 KB Output is correct
27 Correct 5700 ms 2748 KB Output is correct
28 Correct 5700 ms 2804 KB Output is correct
29 Correct 5700 ms 2924 KB Output is correct
30 Correct 5700 ms 2804 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 5700 ms 2752 KB Output is correct
2 Correct 5700 ms 2800 KB Output is correct
3 Correct 5700 ms 2752 KB Output is correct
4 Correct 5700 ms 2748 KB Output is correct
5 Correct 5700 ms 2752 KB Output is correct
6 Correct 5700 ms 2752 KB Output is correct
7 Correct 5700 ms 2804 KB Output is correct
8 Correct 5700 ms 2924 KB Output is correct
9 Correct 5700 ms 2748 KB Output is correct
10 Correct 5700 ms 2748 KB Output is correct
11 Correct 5700 ms 2752 KB Output is correct
12 Correct 5700 ms 2752 KB Output is correct
13 Correct 5700 ms 2796 KB Output is correct
14 Correct 5700 ms 2796 KB Output is correct
15 Correct 5700 ms 2800 KB Output is correct
16 Correct 5700 ms 2752 KB Output is correct
17 Correct 5700 ms 2784 KB Output is correct
18 Correct 5700 ms 2752 KB Output is correct
19 Correct 5700 ms 2804 KB Output is correct
20 Correct 5700 ms 2768 KB Output is correct
21 Correct 5700 ms 2796 KB Output is correct
22 Correct 5700 ms 2748 KB Output is correct
23 Correct 5700 ms 2776 KB Output is correct
24 Correct 5700 ms 2752 KB Output is correct
25 Correct 5700 ms 2796 KB Output is correct
26 Correct 5700 ms 2752 KB Output is correct
27 Correct 5700 ms 2748 KB Output is correct
28 Correct 5700 ms 2804 KB Output is correct
29 Correct 5700 ms 2924 KB Output is correct
30 Correct 5700 ms 2804 KB Output is correct
31 Correct 5700 ms 2796 KB Output is correct
32 Correct 5700 ms 2796 KB Output is correct
33 Correct 5700 ms 2792 KB Output is correct
34 Correct 5700 ms 2668 KB Output is correct
35 Correct 5700 ms 2756 KB Output is correct
36 Correct 5700 ms 3052 KB Output is correct
37 Correct 5700 ms 3052 KB Output is correct
38 Correct 5700 ms 2924 KB Output is correct
39 Correct 5701 ms 6124 KB Output is correct
40 Correct 5700 ms 3512 KB Output is correct
41 Correct 5700 ms 2804 KB Output is correct
42 Correct 5700 ms 3528 KB Output is correct
43 Correct 5700 ms 2896 KB Output is correct
44 Correct 5700 ms 2924 KB Output is correct
45 Correct 5700 ms 2764 KB Output is correct
46 Correct 5701 ms 6304 KB Output is correct
47 Correct 5701 ms 3240 KB Output is correct
48 Correct 5702 ms 5932 KB Output is correct
49 Correct 5701 ms 6056 KB Output is correct
50 Correct 5700 ms 2792 KB Output is correct
51 Correct 5700 ms 2808 KB Output is correct
52 Correct 5700 ms 2792 KB Output is correct
53 Correct 5701 ms 4484 KB Output is correct
54 Correct 5700 ms 6100 KB Output is correct
55 Correct 5700 ms 2780 KB Output is correct
56 Correct 5700 ms 2668 KB Output is correct
57 Correct 5700 ms 2668 KB Output is correct
58 Correct 5701 ms 6380 KB Output is correct
59 Correct 5700 ms 2796 KB Output is correct
60 Correct 5700 ms 2820 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 5713 ms 7284 KB Output is correct
2 Correct 5701 ms 4196 KB Output is correct
3 Correct 5820 ms 103876 KB Output is correct
4 Correct 5767 ms 48816 KB Output is correct
5 Correct 5740 ms 12552 KB Output is correct
6 Correct 5775 ms 10384 KB Output is correct
7 Correct 5789 ms 13768 KB Output is correct
8 Correct 5716 ms 7156 KB Output is correct
9 Correct 5747 ms 9848 KB Output is correct
10 Correct 5721 ms 7944 KB Output is correct
11 Correct 5827 ms 110216 KB Output is correct
12 Correct 5723 ms 8504 KB Output is correct
13 Correct 5721 ms 32656 KB Output is correct
14 Correct 5781 ms 13764 KB Output is correct
15 Correct 5775 ms 108212 KB Output is correct
16 Correct 5715 ms 6628 KB Output is correct
17 Correct 5778 ms 74972 KB Output is correct
18 Correct 5701 ms 4164 KB Output is correct
19 Correct 5757 ms 112040 KB Output is correct
20 Correct 5789 ms 13112 KB Output is correct
21 Correct 5723 ms 11860 KB Output is correct
22 Correct 5742 ms 7996 KB Output is correct
23 Correct 5703 ms 6124 KB Output is correct
24 Correct 5836 ms 84424 KB Output is correct
25 Correct 5725 ms 9812 KB Output is correct
26 Correct 5715 ms 7020 KB Output is correct
27 Correct 5760 ms 8684 KB Output is correct
28 Correct 5702 ms 5092 KB Output is correct
29 Incorrect 5795 ms 13136 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #4
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 5700 ms 2752 KB Output is correct
2 Correct 5700 ms 2800 KB Output is correct
3 Correct 5700 ms 2752 KB Output is correct
4 Correct 5700 ms 2748 KB Output is correct
5 Correct 5700 ms 2752 KB Output is correct
6 Correct 5700 ms 2752 KB Output is correct
7 Correct 5700 ms 2804 KB Output is correct
8 Correct 5700 ms 2924 KB Output is correct
9 Correct 5700 ms 2748 KB Output is correct
10 Correct 5700 ms 2748 KB Output is correct
11 Correct 5700 ms 2752 KB Output is correct
12 Correct 5700 ms 2752 KB Output is correct
13 Correct 5700 ms 2796 KB Output is correct
14 Correct 5700 ms 2796 KB Output is correct
15 Correct 5700 ms 2800 KB Output is correct
16 Correct 5700 ms 2752 KB Output is correct
17 Correct 5700 ms 2784 KB Output is correct
18 Correct 5700 ms 2752 KB Output is correct
19 Correct 5700 ms 2804 KB Output is correct
20 Correct 5700 ms 2768 KB Output is correct
21 Correct 5700 ms 2796 KB Output is correct
22 Correct 5700 ms 2748 KB Output is correct
23 Correct 5700 ms 2776 KB Output is correct
24 Correct 5700 ms 2752 KB Output is correct
25 Correct 5700 ms 2796 KB Output is correct
26 Correct 5700 ms 2752 KB Output is correct
27 Correct 5700 ms 2748 KB Output is correct
28 Correct 5700 ms 2804 KB Output is correct
29 Correct 5700 ms 2924 KB Output is correct
30 Correct 5700 ms 2804 KB Output is correct
31 Correct 5700 ms 2796 KB Output is correct
32 Correct 5700 ms 2796 KB Output is correct
33 Correct 5700 ms 2792 KB Output is correct
34 Correct 5700 ms 2668 KB Output is correct
35 Correct 5700 ms 2756 KB Output is correct
36 Correct 5700 ms 3052 KB Output is correct
37 Correct 5700 ms 3052 KB Output is correct
38 Correct 5700 ms 2924 KB Output is correct
39 Correct 5701 ms 6124 KB Output is correct
40 Correct 5700 ms 3512 KB Output is correct
41 Correct 5700 ms 2804 KB Output is correct
42 Correct 5700 ms 3528 KB Output is correct
43 Correct 5700 ms 2896 KB Output is correct
44 Correct 5700 ms 2924 KB Output is correct
45 Correct 5700 ms 2764 KB Output is correct
46 Correct 5701 ms 6304 KB Output is correct
47 Correct 5701 ms 3240 KB Output is correct
48 Correct 5702 ms 5932 KB Output is correct
49 Correct 5701 ms 6056 KB Output is correct
50 Correct 5700 ms 2792 KB Output is correct
51 Correct 5700 ms 2808 KB Output is correct
52 Correct 5700 ms 2792 KB Output is correct
53 Correct 5701 ms 4484 KB Output is correct
54 Correct 5700 ms 6100 KB Output is correct
55 Correct 5700 ms 2780 KB Output is correct
56 Correct 5700 ms 2668 KB Output is correct
57 Correct 5700 ms 2668 KB Output is correct
58 Correct 5701 ms 6380 KB Output is correct
59 Correct 5700 ms 2796 KB Output is correct
60 Correct 5700 ms 2820 KB Output is correct
61 Correct 5713 ms 7284 KB Output is correct
62 Correct 5701 ms 4196 KB Output is correct
63 Correct 5820 ms 103876 KB Output is correct
64 Correct 5767 ms 48816 KB Output is correct
65 Correct 5740 ms 12552 KB Output is correct
66 Correct 5775 ms 10384 KB Output is correct
67 Correct 5789 ms 13768 KB Output is correct
68 Correct 5716 ms 7156 KB Output is correct
69 Correct 5747 ms 9848 KB Output is correct
70 Correct 5721 ms 7944 KB Output is correct
71 Correct 5827 ms 110216 KB Output is correct
72 Correct 5723 ms 8504 KB Output is correct
73 Correct 5721 ms 32656 KB Output is correct
74 Correct 5781 ms 13764 KB Output is correct
75 Correct 5775 ms 108212 KB Output is correct
76 Correct 5715 ms 6628 KB Output is correct
77 Correct 5778 ms 74972 KB Output is correct
78 Correct 5701 ms 4164 KB Output is correct
79 Correct 5757 ms 112040 KB Output is correct
80 Correct 5789 ms 13112 KB Output is correct
81 Correct 5723 ms 11860 KB Output is correct
82 Correct 5742 ms 7996 KB Output is correct
83 Correct 5703 ms 6124 KB Output is correct
84 Correct 5836 ms 84424 KB Output is correct
85 Correct 5725 ms 9812 KB Output is correct
86 Correct 5715 ms 7020 KB Output is correct
87 Correct 5760 ms 8684 KB Output is correct
88 Correct 5702 ms 5092 KB Output is correct
89 Incorrect 5795 ms 13136 KB Output isn't correct
90 Halted 0 ms 0 KB -