oj.uz

Submission #115105

# Submission time Handle Problem Language Result Execution time Memory
115105 2019-06-05T10:10:38 Z oolimry Race (IOI11_race) C++14
43 / 100
 3000 ms 255824 KB 
#include "race.h"
#include <bits/stdc++.h>

using namespace std;

typedef pair<int,int> ii;

static vector<ii> adj[200005];
static bool vis[200005];
static unordered_map<int,int> dp[200005];
int k;
int ans = 102345678;
void dfs(int u){
    vis[u] = true;
    for(int i = 0;i < adj[u].size();i++){
        int v = adj[u][i].first;
        int w = adj[u][i].second;

        if(vis[v]) continue;
        dfs(v);
        vector<ii> updates;
        for(ii x : dp[v]){
            int value = w + x.first;
            if(value <= k){
                if(dp[u].find(k-value) != dp[u].end()){
                    ans = min(ans, dp[u][k-value] + x.second + 1);
                }
                updates.push_back({value,x.second+1});
            }
        }
        dp[v].clear();

        for(ii x : updates){
            if(dp[u].find(x.first) == dp[u].end()){
                dp[u][x.first] = x.second;
            }
            else{
                dp[u][x.first] = min(x.second,dp[u][x.first]);
            }
        }
    }

    /*
    cout << u << ": ";
    for(ii x : dp[u]){
        cout << "(" << x.first << ", " << x.second << ") ";
    }
    cout << "\n";
    */
}
int best_path(int N, int K, int H[][2], int L[])
{
    k = K;
    int n = N;
    for(int i = 0;i < n;i++) dp[i][0] = 0;
    for(int i = 0;i < n-1;i++){
        int a = H[i][0];
        int b = H[i][1];
        int c = L[i];
        adj[a].push_back({b,c});
        adj[b].push_back({a,c});
    }

    dfs(0);
    if(ans > n) return -1;
    return ans;
}

Compilation message

race.cpp: In function 'void dfs(int)':
race.cpp:15:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for(int i = 0;i < adj[u].size();i++){
                   ~~^~~~~~~~~~~~~~~

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 16000 KB Output is correct
2 Correct 17 ms 16000 KB Output is correct
3 Correct 17 ms 16000 KB Output is correct
4 Correct 16 ms 16000 KB Output is correct
5 Correct 19 ms 16000 KB Output is correct
6 Correct 16 ms 16000 KB Output is correct
7 Correct 16 ms 16000 KB Output is correct
8 Correct 15 ms 16000 KB Output is correct
9 Correct 16 ms 16000 KB Output is correct
10 Correct 15 ms 16000 KB Output is correct
11 Correct 16 ms 16000 KB Output is correct
12 Correct 16 ms 16000 KB Output is correct
13 Correct 17 ms 16128 KB Output is correct
14 Correct 16 ms 16000 KB Output is correct
15 Correct 16 ms 16128 KB Output is correct
16 Correct 17 ms 16128 KB Output is correct
17 Correct 17 ms 16128 KB Output is correct
18 Correct 16 ms 16128 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 16000 KB Output is correct
2 Correct 17 ms 16000 KB Output is correct
3 Correct 17 ms 16000 KB Output is correct
4 Correct 16 ms 16000 KB Output is correct
5 Correct 19 ms 16000 KB Output is correct
6 Correct 16 ms 16000 KB Output is correct
7 Correct 16 ms 16000 KB Output is correct
8 Correct 15 ms 16000 KB Output is correct
9 Correct 16 ms 16000 KB Output is correct
10 Correct 15 ms 16000 KB Output is correct
11 Correct 16 ms 16000 KB Output is correct
12 Correct 16 ms 16000 KB Output is correct
13 Correct 17 ms 16128 KB Output is correct
14 Correct 16 ms 16000 KB Output is correct
15 Correct 16 ms 16128 KB Output is correct
16 Correct 17 ms 16128 KB Output is correct
17 Correct 17 ms 16128 KB Output is correct
18 Correct 16 ms 16128 KB Output is correct
19 Correct 15 ms 16000 KB Output is correct
20 Correct 15 ms 16000 KB Output is correct
21 Correct 17 ms 16256 KB Output is correct
22 Correct 17 ms 16128 KB Output is correct
23 Correct 16 ms 16128 KB Output is correct
24 Correct 16 ms 16128 KB Output is correct
25 Correct 19 ms 16256 KB Output is correct
26 Correct 16 ms 16128 KB Output is correct
27 Correct 16 ms 16128 KB Output is correct
28 Correct 18 ms 16256 KB Output is correct
29 Correct 18 ms 16256 KB Output is correct
30 Correct 17 ms 16364 KB Output is correct
31 Correct 18 ms 16256 KB Output is correct
32 Correct 18 ms 16256 KB Output is correct
33 Correct 20 ms 16384 KB Output is correct
34 Correct 19 ms 16384 KB Output is correct
35 Correct 20 ms 16512 KB Output is correct
36 Correct 20 ms 16512 KB Output is correct
37 Correct 30 ms 17152 KB Output is correct
38 Correct 27 ms 16896 KB Output is correct

Subtask #3
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 16000 KB Output is correct
2 Correct 17 ms 16000 KB Output is correct
3 Correct 17 ms 16000 KB Output is correct
4 Correct 16 ms 16000 KB Output is correct
5 Correct 19 ms 16000 KB Output is correct
6 Correct 16 ms 16000 KB Output is correct
7 Correct 16 ms 16000 KB Output is correct
8 Correct 15 ms 16000 KB Output is correct
9 Correct 16 ms 16000 KB Output is correct
10 Correct 15 ms 16000 KB Output is correct
11 Correct 16 ms 16000 KB Output is correct
12 Correct 16 ms 16000 KB Output is correct
13 Correct 17 ms 16128 KB Output is correct
14 Correct 16 ms 16000 KB Output is correct
15 Correct 16 ms 16128 KB Output is correct
16 Correct 17 ms 16128 KB Output is correct
17 Correct 17 ms 16128 KB Output is correct
18 Correct 16 ms 16128 KB Output is correct
19 Correct 260 ms 33476 KB Output is correct
20 Correct 266 ms 33656 KB Output is correct
21 Correct 242 ms 32248 KB Output is correct
22 Correct 224 ms 30812 KB Output is correct
23 Correct 203 ms 28664 KB Output is correct
24 Correct 178 ms 29816 KB Output is correct
25 Correct 1588 ms 160732 KB Output is correct
26 Correct 1099 ms 134136 KB Output is correct
27 Correct 487 ms 54652 KB Output is correct
28 Correct 409 ms 66296 KB Output is correct
29 Correct 412 ms 64504 KB Output is correct
30 Correct 507 ms 54904 KB Output is correct
31 Correct 553 ms 54776 KB Output is correct
32 Correct 578 ms 49256 KB Output is correct
33 Correct 2938 ms 247448 KB Output is correct
34 Correct 335 ms 38520 KB Output is correct

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 17 ms 16000 KB Output is correct
2 Correct 17 ms 16000 KB Output is correct
3 Correct 17 ms 16000 KB Output is correct
4 Correct 16 ms 16000 KB Output is correct
5 Correct 19 ms 16000 KB Output is correct
6 Correct 16 ms 16000 KB Output is correct
7 Correct 16 ms 16000 KB Output is correct
8 Correct 15 ms 16000 KB Output is correct
9 Correct 16 ms 16000 KB Output is correct
10 Correct 15 ms 16000 KB Output is correct
11 Correct 16 ms 16000 KB Output is correct
12 Correct 16 ms 16000 KB Output is correct
13 Correct 17 ms 16128 KB Output is correct
14 Correct 16 ms 16000 KB Output is correct
15 Correct 16 ms 16128 KB Output is correct
16 Correct 17 ms 16128 KB Output is correct
17 Correct 17 ms 16128 KB Output is correct
18 Correct 16 ms 16128 KB Output is correct
19 Correct 15 ms 16000 KB Output is correct
20 Correct 15 ms 16000 KB Output is correct
21 Correct 17 ms 16256 KB Output is correct
22 Correct 17 ms 16128 KB Output is correct
23 Correct 16 ms 16128 KB Output is correct
24 Correct 16 ms 16128 KB Output is correct
25 Correct 19 ms 16256 KB Output is correct
26 Correct 16 ms 16128 KB Output is correct
27 Correct 16 ms 16128 KB Output is correct
28 Correct 18 ms 16256 KB Output is correct
29 Correct 18 ms 16256 KB Output is correct
30 Correct 17 ms 16364 KB Output is correct
31 Correct 18 ms 16256 KB Output is correct
32 Correct 18 ms 16256 KB Output is correct
33 Correct 20 ms 16384 KB Output is correct
34 Correct 19 ms 16384 KB Output is correct
35 Correct 20 ms 16512 KB Output is correct
36 Correct 20 ms 16512 KB Output is correct
37 Correct 30 ms 17152 KB Output is correct
38 Correct 27 ms 16896 KB Output is correct
39 Correct 260 ms 33476 KB Output is correct
40 Correct 266 ms 33656 KB Output is correct
41 Correct 242 ms 32248 KB Output is correct
42 Correct 224 ms 30812 KB Output is correct
43 Correct 203 ms 28664 KB Output is correct
44 Correct 178 ms 29816 KB Output is correct
45 Correct 1588 ms 160732 KB Output is correct
46 Correct 1099 ms 134136 KB Output is correct
47 Correct 487 ms 54652 KB Output is correct
48 Correct 409 ms 66296 KB Output is correct
49 Correct 412 ms 64504 KB Output is correct
50 Correct 507 ms 54904 KB Output is correct
51 Correct 553 ms 54776 KB Output is correct
52 Correct 578 ms 49256 KB Output is correct
53 Correct 2938 ms 247448 KB Output is correct
54 Correct 335 ms 38520 KB Output is correct
55 Correct 43 ms 18048 KB Output is correct
56 Correct 34 ms 17616 KB Output is correct
57 Correct 137 ms 29488 KB Output is correct
58 Correct 79 ms 28292 KB Output is correct
59 Execution timed out 3035 ms 255824 KB Time limit exceeded
60 Halted 0 ms 0 KB -