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Submission #77163

# Submission time Handle Problem Language Result Execution time Memory
77163 2018-09-23T06:51:50 Z muradeyn Race (IOI11_race) C++14
21 / 100
 3000 ms 8948 KB 
#include "race.h"
#include <bits/stdc++.h>
#define intt long long
#define FAST_READ ios_base::sync_with_stdio(0);cin.tie(0);
#define SIZE 100001
#define INF INT_MAX
#define F first
#define S second
#define in(a) scanf("%d",&a);
#define outn(a) printf("%d\n",&a);
#define outs(a) printf("%d ",&a);


using namespace std;

int root , n , k , x , y , w , used[SIZE] , dp[SIZE] , co , cent = -1 , we , ans = -1;

vector< pair<int,int> >v[SIZE];

map< int , int > mp;

bool f = true;

void init() {
    for (int i = 1;i<=n;i++) {
        if (used[i] < 5 && used[i] > 0)used[i] = 0;
    }
}

void dfs(int s,int p) {
    co++;
    used[s] = 1;
    int sz = v[s].size();
    for (int i = 0;i<sz;i++) {
        int to = v[s][i].first;
        int cost = v[s][i].second;
        if (to == p)continue;
        if (used[to] >= 1)continue;
        we += cost;
        dfs(to,s);
    }
}

void dfs2(int s,int p) {
    used[s] = 2;
    dp[s] = 1;
    bool f = true;
    int sz = v[s].size();
    for (int i = 0;i<sz;i++) {
        int to = v[s][i].first;
        if (used[to] >= 2)continue;
        dfs2(to,s);
        if (dp[to] > co / 2) f = false;
        dp[s] += dp[to];
    }
    if (f && cent == -1 && co - dp[s] <= co / 2) cent = s;
}

void dfs3(int s,int p,int len,int cst) {
    used[s] = 3;
    if (cst == k) {
        if (ans == -1)ans = len;
        else ans = min(ans,len);
        return;
    }
    int sz = v[s].size();
    for (int i = 0;i<sz;i++) {
        int to = v[s][i].first;
        int cost = v[s][i].second;
        if (to == p)continue;
        if (used[to] >= 3)continue;
        dfs3(to,s,len + 1,cst + cost);
    }
}

void dfs4(int s,int p,int len,int cst) {
    used[s] = 4;
    //cout<<s - 1<<" "<<cst<<" "<<k<<endl;
    //char aa;
    //cin>>aa;
    if (cst > k)return;
    if (cst == k) {
        if (ans == -1)ans = len;
        else ans = min(ans,len);
        return;
    }
    else if (mp[k - cst] != 0) {
        if (ans == -1)ans = len + mp[k - cst];
        else ans = min(ans,len + mp[k - cst]);
    }
    int sz = v[s].size();
    //cout<<sz<<endl;
    for (int i = 0;i<sz;i++) {
        int to = v[s][i].first;
        int cost = v[s][i].second;
        if (to == p)continue;
        if (used[to] >= 4)continue;
        dfs4(to,s,len + 1,cst + cost);
    }
    if (mp[cst] == 0)mp[cst] = len;
    else if (mp[cst] > len)mp[cst] = min(mp[cst],len);
}

int best_path(int N, int K, int h[][2], int l[])
{
    k = K;
    n = N;
    for (int i = 0;i<n - 1;i++) {
        x = h[i][0];
        y = h[i][1];
        x++;
        y++;
        v[x].push_back({y,l[i]});
        v[y].push_back({x,l[i]});
    }
    while (f) {
        f = false;
        init();
        for (int i = 1;i<=n;i++) {
            if (used[i] == 0) {
              co = 0; we = 0;
                dfs(i , -1);
                if (we < k || co == 1) continue;
                dp[i] = 0;
                cent = -1;
                dfs2(i,-1);
                if (cent == -1)continue;
                f = true;
                init();
                root = cent;
                dfs3(cent,-1,0,0);
                mp.clear();
                dfs4(cent,-1,0,0);
                used[cent] = 5;
            }
        }
    }
    return ans;
}

Subtask #1
9.0 / 9.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2812 KB Output is correct
3 Correct 4 ms 2812 KB Output is correct
4 Correct 4 ms 2824 KB Output is correct
5 Correct 4 ms 2824 KB Output is correct
6 Correct 4 ms 2824 KB Output is correct
7 Correct 4 ms 2948 KB Output is correct
8 Correct 4 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 4 ms 2980 KB Output is correct
11 Correct 4 ms 3040 KB Output is correct
12 Correct 5 ms 3040 KB Output is correct
13 Correct 4 ms 3040 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 4 ms 3040 KB Output is correct
16 Correct 4 ms 3040 KB Output is correct
17 Correct 4 ms 3040 KB Output is correct
18 Correct 4 ms 3040 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2812 KB Output is correct
3 Correct 4 ms 2812 KB Output is correct
4 Correct 4 ms 2824 KB Output is correct
5 Correct 4 ms 2824 KB Output is correct
6 Correct 4 ms 2824 KB Output is correct
7 Correct 4 ms 2948 KB Output is correct
8 Correct 4 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 4 ms 2980 KB Output is correct
11 Correct 4 ms 3040 KB Output is correct
12 Correct 5 ms 3040 KB Output is correct
13 Correct 4 ms 3040 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 4 ms 3040 KB Output is correct
16 Correct 4 ms 3040 KB Output is correct
17 Correct 4 ms 3040 KB Output is correct
18 Correct 4 ms 3040 KB Output is correct
19 Correct 4 ms 3040 KB Output is correct
20 Correct 4 ms 3040 KB Output is correct
21 Correct 7 ms 3072 KB Output is correct
22 Correct 6 ms 3072 KB Output is correct
23 Correct 6 ms 3072 KB Output is correct
24 Correct 5 ms 3072 KB Output is correct
25 Correct 6 ms 3072 KB Output is correct
26 Correct 5 ms 3072 KB Output is correct
27 Correct 7 ms 3072 KB Output is correct
28 Correct 6 ms 3072 KB Output is correct
29 Correct 7 ms 3072 KB Output is correct
30 Correct 7 ms 3128 KB Output is correct
31 Correct 6 ms 3128 KB Output is correct
32 Correct 6 ms 3128 KB Output is correct
33 Correct 7 ms 3128 KB Output is correct
34 Correct 5 ms 3128 KB Output is correct
35 Correct 5 ms 3128 KB Output is correct
36 Correct 5 ms 3128 KB Output is correct
37 Correct 5 ms 3128 KB Output is correct
38 Correct 5 ms 3128 KB Output is correct

Subtask #3
0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2812 KB Output is correct
3 Correct 4 ms 2812 KB Output is correct
4 Correct 4 ms 2824 KB Output is correct
5 Correct 4 ms 2824 KB Output is correct
6 Correct 4 ms 2824 KB Output is correct
7 Correct 4 ms 2948 KB Output is correct
8 Correct 4 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 4 ms 2980 KB Output is correct
11 Correct 4 ms 3040 KB Output is correct
12 Correct 5 ms 3040 KB Output is correct
13 Correct 4 ms 3040 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 4 ms 3040 KB Output is correct
16 Correct 4 ms 3040 KB Output is correct
17 Correct 4 ms 3040 KB Output is correct
18 Correct 4 ms 3040 KB Output is correct
19 Correct 840 ms 8700 KB Output is correct
20 Correct 853 ms 8700 KB Output is correct
21 Correct 825 ms 8828 KB Output is correct
22 Correct 988 ms 8828 KB Output is correct
23 Execution timed out 3047 ms 8948 KB Time limit exceeded
24 Halted 0 ms 0 KB -

Subtask #4
0 / 57.0

# Verdict Execution time Memory Grader output
1 Correct 4 ms 2680 KB Output is correct
2 Correct 4 ms 2812 KB Output is correct
3 Correct 4 ms 2812 KB Output is correct
4 Correct 4 ms 2824 KB Output is correct
5 Correct 4 ms 2824 KB Output is correct
6 Correct 4 ms 2824 KB Output is correct
7 Correct 4 ms 2948 KB Output is correct
8 Correct 4 ms 2980 KB Output is correct
9 Correct 4 ms 2980 KB Output is correct
10 Correct 4 ms 2980 KB Output is correct
11 Correct 4 ms 3040 KB Output is correct
12 Correct 5 ms 3040 KB Output is correct
13 Correct 4 ms 3040 KB Output is correct
14 Correct 4 ms 3040 KB Output is correct
15 Correct 4 ms 3040 KB Output is correct
16 Correct 4 ms 3040 KB Output is correct
17 Correct 4 ms 3040 KB Output is correct
18 Correct 4 ms 3040 KB Output is correct
19 Correct 4 ms 3040 KB Output is correct
20 Correct 4 ms 3040 KB Output is correct
21 Correct 7 ms 3072 KB Output is correct
22 Correct 6 ms 3072 KB Output is correct
23 Correct 6 ms 3072 KB Output is correct
24 Correct 5 ms 3072 KB Output is correct
25 Correct 6 ms 3072 KB Output is correct
26 Correct 5 ms 3072 KB Output is correct
27 Correct 7 ms 3072 KB Output is correct
28 Correct 6 ms 3072 KB Output is correct
29 Correct 7 ms 3072 KB Output is correct
30 Correct 7 ms 3128 KB Output is correct
31 Correct 6 ms 3128 KB Output is correct
32 Correct 6 ms 3128 KB Output is correct
33 Correct 7 ms 3128 KB Output is correct
34 Correct 5 ms 3128 KB Output is correct
35 Correct 5 ms 3128 KB Output is correct
36 Correct 5 ms 3128 KB Output is correct
37 Correct 5 ms 3128 KB Output is correct
38 Correct 5 ms 3128 KB Output is correct
39 Correct 840 ms 8700 KB Output is correct
40 Correct 853 ms 8700 KB Output is correct
41 Correct 825 ms 8828 KB Output is correct
42 Correct 988 ms 8828 KB Output is correct
43 Execution timed out 3047 ms 8948 KB Time limit exceeded
44 Halted 0 ms 0 KB -