oj.uz

Submission #1083986

# Submission time Handle Problem Language Result Execution time Memory
1083986 2024-09-04T18:06:30 Z Tymond Dreaming (IOI13_dreaming) C++17
47 / 100
 69 ms 29264 KB 
#include <bits/stdc++.h>
#include "dreaming.h"
using namespace std;
using ll = long long;
using ld = long double;
#define fi first
#define se second
#define vi vector<int>
#define vll vector<long long>
#define pii pair<int, int>
#define pll pair<long long, long long>
#define pb push_back
#define mp make_pair
#define eb emplace_back
#define all(x) (x).begin(), (x).end()
#define sz(x) (int)(x).size()
mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
mt19937_64 rng64(chrono::steady_clock::now().time_since_epoch().count());
inline int rand(int l,int r){return uniform_int_distribution<int>(l, r)(rng);}
inline ll rand(ll l,ll r){return uniform_int_distribution<ll>(l, r)(rng64);}
#ifdef DEBUG
auto&operator<<(auto&o,pair<auto,auto>p){return o<<"("<<p.first<<", "<<p.second<<")";}
auto operator<<(auto&o,auto x)->decltype(x.end(),o){o<<"{";int i=0;for(auto e:x)o<<","+!i++<<e;return o<<"}";}
#define debug(X...)cerr<<"["#X"]: ",[](auto...$){((cerr<<$<<"; "),...)<<endl;}(X)
#else
#define debug(...){}
#endif

struct custom_hash {
    static uint64_t splitmix64(uint64_t x) {
        x += 0x9e3779b97f4a7c15;
        x = (x ^ (x >> 30)) * 0xbf58476d1ce4e5b9;
        x = (x ^ (x >> 27)) * 0x94d049bb133111eb;
        return x ^ (x >> 31);
    }

    size_t operator()(uint64_t x) const {
        static const uint64_t FIXED_RANDOM = chrono::steady_clock::now().time_since_epoch().count();
        return splitmix64(x + FIXED_RANDOM);
    }
};

const int MAXN = 1e5 + 7;
vector<pii> g[MAXN];
int root[MAXN];
int parent[MAXN];
int mx[MAXN];
int best[MAXN];
int vis[MAXN];
int n, m, l;
int ans = 0;

void dfs(int v, int p){
    root[v] = root[p];
    parent[v] = p;
    vis[v] = 1;
    vi vec;
    for(auto [u, c] : g[v]){
        if(u == p){
            continue;
        }
        dfs(u, v);
        mx[v] = max(mx[v], mx[u] + c);
        vec.pb(mx[u] + c);
    }
    if(sz(vec) <= 1){
        return;
    }
    sort(all(vec));
    reverse(all(vec));
    ans = max(ans, vec[0] + vec[1]);
}

void dfs2(int v, int p, int k){
    vi vec;
    for(auto [u, c] : g[v]){
        if(u != p){
            vec.pb(mx[u] + c);
        }
    }

    sort(all(vec));
    reverse(all(vec));

    for(auto [u, c] : g[v]){
        if(u == p){
            continue;
        }
        int g = k + c;
        best[u] = max(mx[u], k + c);
        if(mx[u] + c == vec[0]){
            if(sz(vec) > 1){
                best[u] = max(best[u], vec[1] + c);
                g = max(g, vec[1] + c);
            }
        }else{
            best[u] = max(best[u], vec[0] + c);
            g = max(g, vec[0] + c);
        }

        dfs2(u, v, g);
    }
}

int travelTime(int N, int M, int L, int A[], int B[], int T[]) {
    n = N;
    m = M;
    l = L;
    for(int i = 0; i < m; i++){
        g[A[i]].pb({B[i], T[i]});
        g[B[i]].pb({A[i], T[i]});
    }

    for(int i = 0; i < n; i++){
        if(!vis[i]){
            root[i] = i;
            dfs(i, i);
            best[i] = mx[i];
            dfs2(i, i, 0);
        }
    }

    pii naj = {1e9, 0};
    for(int i = 0; i < n; i++){
        if(naj.fi > best[i]){
            naj.fi = best[i];
            naj.se = i;
        }
    }

    map<int, int> mn;
    for(int i = 0; i < n; i++){
        mn[i] = 1e9;
    }

    for(int i = 0; i < n; i++){
        mn[root[i]] = min(mn[root[i]], best[i]);
    }

    if(m == n - 2){
        int sec = 0;
        for(auto ele : mn){
            if(root[ele.fi] == ele.fi && ele.fi != root[naj.se]){
                sec = ele.se;
            }
        }

        ans = max(ans, sec + naj.fi + l);
        return ans;
    }

    vi ok;
    for(auto ele : mn){
        if(root[ele.fi] == ele.fi && root[naj.se] != ele.fi){
            ok.pb(ele.se);
        }
    }

    sort(all(ok));
    reverse(all(ok));

    ans = max(ans, naj.fi + 2 * l + ok[0] + ok[1]);
    return ans;
}

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 20052 KB Output is correct
2 Correct 50 ms 20820 KB Output is correct
3 Correct 35 ms 18524 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7004 KB Output is correct
6 Correct 14 ms 9196 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 25 ms 12308 KB Output is correct
9 Correct 32 ms 15964 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 45 ms 16976 KB Output is correct
12 Correct 56 ms 18992 KB Output is correct
13 Correct 2 ms 5720 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5756 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 2 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 2 ms 5720 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 2 ms 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5720 KB Output is correct
17 Correct 1 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 1 ms 5760 KB Output is correct
20 Correct 2 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 1 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 ms 5768 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 20052 KB Output is correct
2 Correct 50 ms 20820 KB Output is correct
3 Correct 35 ms 18524 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7004 KB Output is correct
6 Correct 14 ms 9196 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 25 ms 12308 KB Output is correct
9 Correct 32 ms 15964 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 45 ms 16976 KB Output is correct
12 Correct 56 ms 18992 KB Output is correct
13 Correct 2 ms 5720 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5756 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 2 ms 5720 KB Output is correct
21 Correct 2 ms 5724 KB Output is correct
22 Correct 2 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 2 ms 5724 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct
26 Correct 1 ms 5724 KB Output is correct
27 Correct 1 ms 5724 KB Output is correct
28 Correct 1 ms 5724 KB Output is correct
29 Correct 1 ms 5720 KB Output is correct
30 Correct 1 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 1 ms 5760 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 1 ms 5724 KB Output is correct
35 Correct 1 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 1 ms 5768 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 60 ms 21268 KB Output is correct
40 Correct 56 ms 20652 KB Output is correct
41 Correct 34 ms 18516 KB Output is correct
42 Correct 7 ms 8028 KB Output is correct
43 Correct 1 ms 5724 KB Output is correct
44 Correct 1 ms 5724 KB Output is correct
45 Correct 1 ms 5724 KB Output is correct
46 Correct 1 ms 5724 KB Output is correct
47 Correct 1 ms 5724 KB Output is correct
48 Correct 1 ms 5724 KB Output is correct
49 Correct 1 ms 5724 KB Output is correct
50 Correct 1 ms 5724 KB Output is correct
51 Correct 1 ms 5724 KB Output is correct
52 Correct 1 ms 5724 KB Output is correct
53 Correct 1 ms 5724 KB Output is correct
54 Correct 1 ms 5724 KB Output is correct
55 Correct 1 ms 5724 KB Output is correct
56 Correct 1 ms 5724 KB Output is correct
57 Correct 56 ms 15924 KB Output is correct
58 Correct 55 ms 15700 KB Output is correct
59 Correct 62 ms 15956 KB Output is correct
60 Correct 60 ms 15728 KB Output is correct
61 Correct 62 ms 15952 KB Output is correct
62 Correct 61 ms 15952 KB Output is correct
63 Correct 59 ms 15424 KB Output is correct
64 Correct 57 ms 15440 KB Output is correct
65 Correct 58 ms 15696 KB Output is correct
66 Correct 57 ms 15696 KB Output is correct
67 Correct 57 ms 15784 KB Output is correct
68 Correct 69 ms 15764 KB Output is correct
69 Correct 57 ms 16216 KB Output is correct
70 Correct 60 ms 16092 KB Output is correct
71 Correct 1 ms 5720 KB Output is correct
72 Correct 3 ms 5980 KB Output is correct
73 Correct 3 ms 5980 KB Output is correct
74 Correct 3 ms 5980 KB Output is correct
75 Correct 4 ms 5980 KB Output is correct
76 Correct 3 ms 5980 KB Output is correct
77 Correct 3 ms 5980 KB Output is correct
78 Correct 3 ms 5980 KB Output is correct
79 Correct 3 ms 5980 KB Output is correct
80 Correct 60 ms 15908 KB Output is correct
81 Correct 60 ms 15696 KB Output is correct
82 Correct 63 ms 15952 KB Output is correct
83 Correct 64 ms 15776 KB Output is correct
84 Correct 3 ms 5780 KB Output is correct
85 Correct 2 ms 5724 KB Output is correct
86 Correct 2 ms 5980 KB Output is correct
87 Correct 3 ms 5980 KB Output is correct
88 Correct 2 ms 5980 KB Output is correct
89 Correct 4 ms 5980 KB Output is correct
90 Correct 4 ms 5980 KB Output is correct
91 Correct 3 ms 5980 KB Output is correct
92 Correct 3 ms 5980 KB Output is correct
93 Correct 2 ms 5976 KB Output is correct
94 Correct 2 ms 5724 KB Output is correct
95 Correct 1 ms 5724 KB Output is correct
96 Correct 1 ms 5724 KB Output is correct
97 Correct 1 ms 5724 KB Output is correct
98 Correct 1 ms 5760 KB Output is correct
99 Correct 1 ms 5724 KB Output is correct
100 Correct 1 ms 5724 KB Output is correct
101 Correct 1 ms 5724 KB Output is correct
102 Correct 1 ms 5724 KB Output is correct
103 Correct 1 ms 5724 KB Output is correct
104 Correct 6 ms 7004 KB Output is correct
105 Correct 14 ms 9088 KB Output is correct
106 Correct 1 ms 5724 KB Output is correct
107 Correct 25 ms 12276 KB Output is correct
108 Correct 31 ms 15952 KB Output is correct
109 Correct 1 ms 5724 KB Output is correct
110 Correct 45 ms 17004 KB Output is correct
111 Correct 48 ms 19024 KB Output is correct
112 Correct 1 ms 5720 KB Output is correct
113 Correct 69 ms 29264 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Incorrect 53 ms 12492 KB Output isn't correct
2 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 1 ms 5724 KB Output is correct
3 Correct 1 ms 5756 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 2 ms 5724 KB Output is correct
6 Correct 1 ms 5724 KB Output is correct
7 Correct 2 ms 5720 KB Output is correct
8 Correct 2 ms 5724 KB Output is correct
9 Correct 2 ms 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5720 KB Output is correct
17 Correct 1 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 1 ms 5760 KB Output is correct
20 Correct 2 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 1 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 ms 5768 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct
26 Correct 2 ms 5764 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 2 ms 5980 KB Output is correct
29 Incorrect 2 ms 5760 KB Output isn't correct
30 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 49 ms 20052 KB Output is correct
2 Correct 50 ms 20820 KB Output is correct
3 Correct 35 ms 18524 KB Output is correct
4 Correct 7 ms 8028 KB Output is correct
5 Correct 6 ms 7004 KB Output is correct
6 Correct 14 ms 9196 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 25 ms 12308 KB Output is correct
9 Correct 32 ms 15964 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 45 ms 16976 KB Output is correct
12 Correct 56 ms 18992 KB Output is correct
13 Correct 2 ms 5720 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 1 ms 5724 KB Output is correct
16 Correct 1 ms 5756 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 2 ms 5724 KB Output is correct
19 Correct 1 ms 5724 KB Output is correct
20 Correct 2 ms 5720 KB Output is correct
21 Correct 2 ms 5724 KB Output is correct
22 Correct 2 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 2 ms 5724 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct
26 Correct 1 ms 5724 KB Output is correct
27 Correct 1 ms 5724 KB Output is correct
28 Correct 1 ms 5724 KB Output is correct
29 Correct 1 ms 5720 KB Output is correct
30 Correct 1 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 1 ms 5760 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 1 ms 5724 KB Output is correct
35 Correct 1 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 1 ms 5768 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 60 ms 21268 KB Output is correct
40 Correct 56 ms 20652 KB Output is correct
41 Correct 34 ms 18516 KB Output is correct
42 Correct 7 ms 8028 KB Output is correct
43 Correct 1 ms 5724 KB Output is correct
44 Correct 1 ms 5724 KB Output is correct
45 Correct 1 ms 5724 KB Output is correct
46 Correct 1 ms 5724 KB Output is correct
47 Correct 1 ms 5724 KB Output is correct
48 Correct 1 ms 5724 KB Output is correct
49 Correct 1 ms 5724 KB Output is correct
50 Correct 1 ms 5724 KB Output is correct
51 Correct 1 ms 5724 KB Output is correct
52 Correct 1 ms 5724 KB Output is correct
53 Correct 1 ms 5724 KB Output is correct
54 Correct 1 ms 5724 KB Output is correct
55 Correct 1 ms 5724 KB Output is correct
56 Correct 1 ms 5724 KB Output is correct
57 Correct 56 ms 15924 KB Output is correct
58 Correct 55 ms 15700 KB Output is correct
59 Correct 62 ms 15956 KB Output is correct
60 Correct 60 ms 15728 KB Output is correct
61 Correct 62 ms 15952 KB Output is correct
62 Correct 61 ms 15952 KB Output is correct
63 Correct 59 ms 15424 KB Output is correct
64 Correct 57 ms 15440 KB Output is correct
65 Correct 58 ms 15696 KB Output is correct
66 Correct 57 ms 15696 KB Output is correct
67 Correct 57 ms 15784 KB Output is correct
68 Correct 69 ms 15764 KB Output is correct
69 Correct 57 ms 16216 KB Output is correct
70 Correct 60 ms 16092 KB Output is correct
71 Correct 1 ms 5720 KB Output is correct
72 Correct 3 ms 5980 KB Output is correct
73 Correct 3 ms 5980 KB Output is correct
74 Correct 3 ms 5980 KB Output is correct
75 Correct 4 ms 5980 KB Output is correct
76 Correct 3 ms 5980 KB Output is correct
77 Correct 3 ms 5980 KB Output is correct
78 Correct 3 ms 5980 KB Output is correct
79 Correct 3 ms 5980 KB Output is correct
80 Correct 60 ms 15908 KB Output is correct
81 Correct 60 ms 15696 KB Output is correct
82 Correct 63 ms 15952 KB Output is correct
83 Correct 64 ms 15776 KB Output is correct
84 Correct 3 ms 5780 KB Output is correct
85 Correct 2 ms 5724 KB Output is correct
86 Correct 2 ms 5980 KB Output is correct
87 Correct 3 ms 5980 KB Output is correct
88 Correct 2 ms 5980 KB Output is correct
89 Correct 4 ms 5980 KB Output is correct
90 Correct 4 ms 5980 KB Output is correct
91 Correct 3 ms 5980 KB Output is correct
92 Correct 3 ms 5980 KB Output is correct
93 Correct 2 ms 5976 KB Output is correct
94 Correct 2 ms 5724 KB Output is correct
95 Correct 1 ms 5724 KB Output is correct
96 Correct 1 ms 5724 KB Output is correct
97 Correct 1 ms 5724 KB Output is correct
98 Correct 1 ms 5760 KB Output is correct
99 Correct 1 ms 5724 KB Output is correct
100 Correct 1 ms 5724 KB Output is correct
101 Correct 1 ms 5724 KB Output is correct
102 Correct 1 ms 5724 KB Output is correct
103 Correct 1 ms 5724 KB Output is correct
104 Correct 6 ms 7004 KB Output is correct
105 Correct 14 ms 9088 KB Output is correct
106 Correct 1 ms 5724 KB Output is correct
107 Correct 25 ms 12276 KB Output is correct
108 Correct 31 ms 15952 KB Output is correct
109 Correct 1 ms 5724 KB Output is correct
110 Correct 45 ms 17004 KB Output is correct
111 Correct 48 ms 19024 KB Output is correct
112 Correct 1 ms 5720 KB Output is correct
113 Correct 69 ms 29264 KB Output is correct
114 Incorrect 53 ms 12492 KB Output isn't correct
115 Halted 0 ms 0 KB -