oj.uz

Submission #953923

# Submission time Handle Problem Language Result Execution time Memory
953923 2024-03-26T21:50:13 Z Samot19 Race (IOI11_race) C++14
100 / 100
 262 ms 37192 KB 
#include <iostream>
        #include <vector>
        #include <stack>
        using namespace std;

        bool remov[200005];

        int sz[200005];

        int Z;

        int res = 1000000000;

        vector<pair<int, int>> g[200005];

        stack<pair<int, int>> s1;
        stack<int> s2;

        int su[1000005];

        int centroid(int x, int tam, int p=-1) {

            for(pair<int, int> y : g[x]) {
                if(y.first == p || remov[y.first]) continue;

                if(sz[y.first]*2 > tam) return centroid(y.first, tam, x);
            }

            return x;
        }

        int subtree(int x, int p=-1) {

            sz[x] = 1;

            for(pair<int, int> y : g[x]) {
                if(y.first == p || remov[y.first]) continue;

                sz[x] += subtree(y.first, x);
            }

            return sz[x];
        }

        void dfs(int x, int p, int dist, int cont) {

            if(dist > Z) return;

            if(dist == Z) {
                res = min(res, cont);
                //cout << x << " " << cont << endl;
                return;
            }

            if(su[Z-dist] > 0) {
                res = min(res, su[Z-dist]+cont);
            }

            //su[dist] = min(cont, su[dist]);
            s1.push({dist, cont});
            s2.push(dist);

            for(pair<int, int> y : g[x]) {

                if(y.first == p || remov[y.first]) continue;

                dfs(y.first, x, dist+y.second, cont+1);
            }
        }

        int xd;
        pair<int, int> lol;

        void centdecomp(int x) {

            int cent = centroid(x, subtree(x));

            for(pair<int, int> y : g[cent]) {

                if(y.first == cent || remov[y.first]) continue;

                while(!s1.empty()) {

                    lol = s1.top();
                    s1.pop();

                    if(su[lol.first] != 0) {
                        su[lol.first] = min(su[lol.first], lol.second);
                    }
                    else {
                       su[lol.first] = lol.second;
                    }
                }

                dfs(y.first, cent, y.second, 1);

            }

            while(!s2.empty()) {
                xd = s2.top();
                s2.pop();

                su[xd] = 0;
            }

            while(!s1.empty()) {
                s1.pop();
            }

            remov[cent] = true;

            for(pair<int, int> y : g[cent]) {
                if(remov[y.first]) continue;

                centdecomp(y.first);
            }
        }

        int best_path(int N, int K, int H[][2], int L[]) {

            for(int i=0; i<N-1; i++) {

                g[H[i][0]].push_back({H[i][1], L[i]});
                g[H[i][1]].push_back({H[i][0], L[i]});
            }

            Z = K;

            centdecomp(0);

            if(res == 1000000000) return -1;

            return res;
        }

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10596 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10632 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10584 KB Output is correct
12 Correct 2 ms 10588 KB Output is correct
13 Correct 2 ms 10588 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10596 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10632 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10584 KB Output is correct
12 Correct 2 ms 10588 KB Output is correct
13 Correct 2 ms 10588 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct
19 Correct 3 ms 10588 KB Output is correct
20 Correct 2 ms 10588 KB Output is correct
21 Correct 2 ms 10588 KB Output is correct
22 Correct 3 ms 12124 KB Output is correct
23 Correct 4 ms 12124 KB Output is correct
24 Correct 3 ms 12380 KB Output is correct
25 Correct 4 ms 11868 KB Output is correct
26 Correct 3 ms 11612 KB Output is correct
27 Correct 2 ms 10588 KB Output is correct
28 Correct 3 ms 10844 KB Output is correct
29 Correct 3 ms 11356 KB Output is correct
30 Correct 3 ms 11720 KB Output is correct
31 Correct 3 ms 12124 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 4 ms 12632 KB Output is correct
34 Correct 3 ms 12380 KB Output is correct
35 Correct 3 ms 12636 KB Output is correct
36 Correct 3 ms 12636 KB Output is correct
37 Correct 3 ms 12120 KB Output is correct
38 Correct 3 ms 11352 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10596 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10632 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10584 KB Output is correct
12 Correct 2 ms 10588 KB Output is correct
13 Correct 2 ms 10588 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct
19 Correct 72 ms 17236 KB Output is correct
20 Correct 69 ms 17988 KB Output is correct
21 Correct 82 ms 18192 KB Output is correct
22 Correct 72 ms 18768 KB Output is correct
23 Correct 49 ms 18692 KB Output is correct
24 Correct 38 ms 18460 KB Output is correct
25 Correct 77 ms 20988 KB Output is correct
26 Correct 63 ms 24596 KB Output is correct
27 Correct 100 ms 22908 KB Output is correct
28 Correct 153 ms 34128 KB Output is correct
29 Correct 169 ms 33680 KB Output is correct
30 Correct 97 ms 23536 KB Output is correct
31 Correct 94 ms 23380 KB Output is correct
32 Correct 129 ms 23244 KB Output is correct
33 Correct 127 ms 22288 KB Output is correct
34 Correct 107 ms 22868 KB Output is correct

Subtask #4
57.0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 10596 KB Output is correct
2 Correct 2 ms 10588 KB Output is correct
3 Correct 2 ms 10588 KB Output is correct
4 Correct 3 ms 10632 KB Output is correct
5 Correct 2 ms 10584 KB Output is correct
6 Correct 3 ms 10584 KB Output is correct
7 Correct 3 ms 10588 KB Output is correct
8 Correct 3 ms 10588 KB Output is correct
9 Correct 2 ms 10588 KB Output is correct
10 Correct 2 ms 10588 KB Output is correct
11 Correct 2 ms 10584 KB Output is correct
12 Correct 2 ms 10588 KB Output is correct
13 Correct 2 ms 10588 KB Output is correct
14 Correct 2 ms 10588 KB Output is correct
15 Correct 2 ms 10588 KB Output is correct
16 Correct 2 ms 10588 KB Output is correct
17 Correct 2 ms 10588 KB Output is correct
18 Correct 2 ms 10588 KB Output is correct
19 Correct 3 ms 10588 KB Output is correct
20 Correct 2 ms 10588 KB Output is correct
21 Correct 2 ms 10588 KB Output is correct
22 Correct 3 ms 12124 KB Output is correct
23 Correct 4 ms 12124 KB Output is correct
24 Correct 3 ms 12380 KB Output is correct
25 Correct 4 ms 11868 KB Output is correct
26 Correct 3 ms 11612 KB Output is correct
27 Correct 2 ms 10588 KB Output is correct
28 Correct 3 ms 10844 KB Output is correct
29 Correct 3 ms 11356 KB Output is correct
30 Correct 3 ms 11720 KB Output is correct
31 Correct 3 ms 12124 KB Output is correct
32 Correct 3 ms 12124 KB Output is correct
33 Correct 4 ms 12632 KB Output is correct
34 Correct 3 ms 12380 KB Output is correct
35 Correct 3 ms 12636 KB Output is correct
36 Correct 3 ms 12636 KB Output is correct
37 Correct 3 ms 12120 KB Output is correct
38 Correct 3 ms 11352 KB Output is correct
39 Correct 72 ms 17236 KB Output is correct
40 Correct 69 ms 17988 KB Output is correct
41 Correct 82 ms 18192 KB Output is correct
42 Correct 72 ms 18768 KB Output is correct
43 Correct 49 ms 18692 KB Output is correct
44 Correct 38 ms 18460 KB Output is correct
45 Correct 77 ms 20988 KB Output is correct
46 Correct 63 ms 24596 KB Output is correct
47 Correct 100 ms 22908 KB Output is correct
48 Correct 153 ms 34128 KB Output is correct
49 Correct 169 ms 33680 KB Output is correct
50 Correct 97 ms 23536 KB Output is correct
51 Correct 94 ms 23380 KB Output is correct
52 Correct 129 ms 23244 KB Output is correct
53 Correct 127 ms 22288 KB Output is correct
54 Correct 107 ms 22868 KB Output is correct
55 Correct 8 ms 11096 KB Output is correct
56 Correct 8 ms 11096 KB Output is correct
57 Correct 55 ms 18028 KB Output is correct
58 Correct 28 ms 18632 KB Output is correct
59 Correct 66 ms 24544 KB Output is correct
60 Correct 262 ms 37192 KB Output is correct
61 Correct 102 ms 22872 KB Output is correct
62 Correct 128 ms 24188 KB Output is correct
63 Correct 142 ms 24044 KB Output is correct
64 Correct 238 ms 24076 KB Output is correct
65 Correct 139 ms 24656 KB Output is correct
66 Correct 234 ms 31764 KB Output is correct
67 Correct 68 ms 25796 KB Output is correct
68 Correct 134 ms 25052 KB Output is correct
69 Correct 132 ms 23096 KB Output is correct
70 Correct 128 ms 25128 KB Output is correct