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Submission #674254

# Submission time Handle Problem Language Result Execution time Memory
674254 2022-12-23T14:35:07 Z Megumin2006 Race (IOI11_race) C++14
43 / 100
 415 ms 81260 KB 
#include <bits/stdc++.h>
#include <ext/pb_ds/assoc_container.hpp>
#include <ext/pb_ds/tree_policy.hpp>

#define ll long long
#define ull unsigned long long
#define ed '\n'
#define pb push_back
#define ii pair<int,int>
#define o_set tree<int, null_type,less<int>, rb_tree_tag,tree_order_statistics_node_update>
#define fi first
#define se second

using namespace __gnu_pbds;
using namespace std;

const int N = 2e5 + 10;
ii lazy[N];
vector<ii> g[N];
int n, k, ans = 2e9;
map<int, int> f[N];

void Merge(int u, int v) {
    if (f[u].size() < f[v].size()) {
        swap(lazy[u], lazy[v]);
        f[u].swap(f[v]);
    }
    for(pair<int, int> tmp: f[v]) {
        int num = tmp.fi + lazy[v].fi;
        int Min = tmp.se + lazy[v].se;

        auto t = f[u].find(k - num - lazy[u].fi);
        if (t != f[u].end()) {
            if (t->se + Min + lazy[u].se < ans) {
                ans = t->se + Min + lazy[u].se;
            }
        }

//        if (f[u].find(num - lazy[u].fi) == f[u].end()) {
//            f[u][num - lazy[u].fi] = Min - lazy[u].se;
//        }
        if (f[u][num - lazy[u].fi] == 0) f[u][num - lazy[u].fi] = Min - lazy[u].se;
        else {
            if (Min - lazy[u].se < f[u][num - lazy[u].fi]) {
                f[u][num - lazy[u].fi] = Min - lazy[u].se;
            }
        }
    }
}

void dfs(int u, int p, int val) {
    f[u][0] = 0;
    for(ii &e: g[u]) if (e.fi != p) {
        dfs(e.fi, u, e.se);
        Merge(u, e.fi);
    }
    lazy[u].fi += val;
    lazy[u].se ++;
}

int best_path(int N, int K, int H[][2], int L[]) {
    n = N, k = K;
    for(ll i=0;i<n-1;i++)
    {
        g[H[i][0]].pb({H[i][1],L[i]});
        g[H[i][1]].pb({H[i][0],L[i]});
    }

    dfs(0, -1, 0);
    if (ans == 2e9) ans = -1;
    return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 8 ms 14392 KB Output is correct
7 Correct 7 ms 14308 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 8 ms 14424 KB Output is correct
10 Correct 8 ms 14548 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14420 KB Output is correct
13 Correct 9 ms 14420 KB Output is correct
14 Correct 7 ms 14376 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 8 ms 14432 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 8 ms 14392 KB Output is correct
7 Correct 7 ms 14308 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 8 ms 14424 KB Output is correct
10 Correct 8 ms 14548 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14420 KB Output is correct
13 Correct 9 ms 14420 KB Output is correct
14 Correct 7 ms 14376 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 8 ms 14432 KB Output is correct
19 Correct 8 ms 14420 KB Output is correct
20 Correct 8 ms 14420 KB Output is correct
21 Correct 10 ms 14496 KB Output is correct
22 Correct 10 ms 14548 KB Output is correct
23 Correct 8 ms 14588 KB Output is correct
24 Correct 8 ms 14548 KB Output is correct
25 Correct 9 ms 14548 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 8 ms 14420 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 9 ms 14628 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 8 ms 14548 KB Output is correct
32 Correct 9 ms 14560 KB Output is correct
33 Correct 11 ms 14548 KB Output is correct
34 Correct 9 ms 14548 KB Output is correct
35 Correct 9 ms 14548 KB Output is correct
36 Correct 9 ms 14548 KB Output is correct
37 Correct 8 ms 14548 KB Output is correct
38 Correct 8 ms 14548 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 8 ms 14392 KB Output is correct
7 Correct 7 ms 14308 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 8 ms 14424 KB Output is correct
10 Correct 8 ms 14548 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14420 KB Output is correct
13 Correct 9 ms 14420 KB Output is correct
14 Correct 7 ms 14376 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 8 ms 14432 KB Output is correct
19 Correct 108 ms 31680 KB Output is correct
20 Correct 107 ms 31720 KB Output is correct
21 Correct 111 ms 31528 KB Output is correct
22 Correct 109 ms 31128 KB Output is correct
23 Correct 151 ms 40780 KB Output is correct
24 Correct 123 ms 33796 KB Output is correct
25 Correct 83 ms 29532 KB Output is correct
26 Correct 57 ms 33664 KB Output is correct
27 Correct 171 ms 40116 KB Output is correct
28 Correct 246 ms 62116 KB Output is correct
29 Correct 285 ms 61376 KB Output is correct
30 Correct 176 ms 40140 KB Output is correct
31 Correct 174 ms 40148 KB Output is correct
32 Correct 234 ms 40140 KB Output is correct
33 Correct 223 ms 43484 KB Output is correct
34 Correct 321 ms 67432 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 7 ms 14420 KB Output is correct
2 Correct 7 ms 14420 KB Output is correct
3 Correct 7 ms 14420 KB Output is correct
4 Correct 7 ms 14420 KB Output is correct
5 Correct 8 ms 14420 KB Output is correct
6 Correct 8 ms 14392 KB Output is correct
7 Correct 7 ms 14308 KB Output is correct
8 Correct 7 ms 14420 KB Output is correct
9 Correct 8 ms 14424 KB Output is correct
10 Correct 8 ms 14548 KB Output is correct
11 Correct 8 ms 14420 KB Output is correct
12 Correct 9 ms 14420 KB Output is correct
13 Correct 9 ms 14420 KB Output is correct
14 Correct 7 ms 14376 KB Output is correct
15 Correct 7 ms 14420 KB Output is correct
16 Correct 7 ms 14420 KB Output is correct
17 Correct 8 ms 14420 KB Output is correct
18 Correct 8 ms 14432 KB Output is correct
19 Correct 8 ms 14420 KB Output is correct
20 Correct 8 ms 14420 KB Output is correct
21 Correct 10 ms 14496 KB Output is correct
22 Correct 10 ms 14548 KB Output is correct
23 Correct 8 ms 14588 KB Output is correct
24 Correct 8 ms 14548 KB Output is correct
25 Correct 9 ms 14548 KB Output is correct
26 Correct 8 ms 14676 KB Output is correct
27 Correct 8 ms 14420 KB Output is correct
28 Correct 8 ms 14548 KB Output is correct
29 Correct 9 ms 14628 KB Output is correct
30 Correct 8 ms 14548 KB Output is correct
31 Correct 8 ms 14548 KB Output is correct
32 Correct 9 ms 14560 KB Output is correct
33 Correct 11 ms 14548 KB Output is correct
34 Correct 9 ms 14548 KB Output is correct
35 Correct 9 ms 14548 KB Output is correct
36 Correct 9 ms 14548 KB Output is correct
37 Correct 8 ms 14548 KB Output is correct
38 Correct 8 ms 14548 KB Output is correct
39 Correct 108 ms 31680 KB Output is correct
40 Correct 107 ms 31720 KB Output is correct
41 Correct 111 ms 31528 KB Output is correct
42 Correct 109 ms 31128 KB Output is correct
43 Correct 151 ms 40780 KB Output is correct
44 Correct 123 ms 33796 KB Output is correct
45 Correct 83 ms 29532 KB Output is correct
46 Correct 57 ms 33664 KB Output is correct
47 Correct 171 ms 40116 KB Output is correct
48 Correct 246 ms 62116 KB Output is correct
49 Correct 285 ms 61376 KB Output is correct
50 Correct 176 ms 40140 KB Output is correct
51 Correct 174 ms 40148 KB Output is correct
52 Correct 234 ms 40140 KB Output is correct
53 Correct 223 ms 43484 KB Output is correct
54 Correct 321 ms 67432 KB Output is correct
55 Correct 23 ms 16852 KB Output is correct
56 Correct 17 ms 15892 KB Output is correct
57 Correct 87 ms 29904 KB Output is correct
58 Correct 49 ms 24952 KB Output is correct
59 Correct 78 ms 38208 KB Output is correct
60 Correct 243 ms 61640 KB Output is correct
61 Correct 225 ms 42656 KB Output is correct
62 Correct 189 ms 40012 KB Output is correct
63 Correct 251 ms 40072 KB Output is correct
64 Incorrect 415 ms 81260 KB Output isn't correct
65 Halted 0 ms 0 KB -