oj.uz

Submission #1083989

# Submission time Handle Problem Language Result Execution time Memory
1083989 2024-09-04T18:10:09 Z Tymond Dreaming (IOI13_dreaming) C++17
47 / 100
 77 ms 27556 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){
            ok.pb(ele.se);
        }
    }

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

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

Subtask #1
14.0 / 14.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 20140 KB Output is correct
2 Correct 51 ms 19536 KB Output is correct
3 Correct 45 ms 17744 KB Output is correct
4 Correct 8 ms 7768 KB Output is correct
5 Correct 6 ms 6760 KB Output is correct
6 Correct 12 ms 8956 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 24 ms 11612 KB Output is correct
9 Correct 36 ms 15196 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 46 ms 15856 KB Output is correct
12 Correct 56 ms 18008 KB Output is correct
13 Correct 2 ms 5724 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 2 ms 5564 KB Output is correct
3 Correct 1 ms 5724 KB Output is correct
4 Correct 1 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 1 ms 5724 KB Output is correct
8 Correct 1 ms 5724 KB Output is correct
9 Correct 2 ms 5720 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5720 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 2 ms 5724 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 2 ms 5724 KB Output is correct
20 Correct 1 ms 5724 KB Output is correct
21 Correct 1 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

Subtask #3
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 20140 KB Output is correct
2 Correct 51 ms 19536 KB Output is correct
3 Correct 45 ms 17744 KB Output is correct
4 Correct 8 ms 7768 KB Output is correct
5 Correct 6 ms 6760 KB Output is correct
6 Correct 12 ms 8956 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 24 ms 11612 KB Output is correct
9 Correct 36 ms 15196 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 46 ms 15856 KB Output is correct
12 Correct 56 ms 18008 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 2 ms 5564 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 1 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 1 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 2 ms 5720 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 2 ms 5720 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 2 ms 5724 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 2 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 1 ms 5724 KB Output is correct
34 Correct 1 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 2 ms 5724 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 50 ms 20048 KB Output is correct
40 Correct 60 ms 19476 KB Output is correct
41 Correct 34 ms 17776 KB Output is correct
42 Correct 8 ms 7768 KB Output is correct
43 Correct 2 ms 5724 KB Output is correct
44 Correct 1 ms 5724 KB Output is correct
45 Correct 1 ms 5976 KB Output is correct
46 Correct 1 ms 5724 KB Output is correct
47 Correct 1 ms 5720 KB Output is correct
48 Correct 2 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 2 ms 5612 KB Output is correct
56 Correct 2 ms 5564 KB Output is correct
57 Correct 63 ms 14420 KB Output is correct
58 Correct 57 ms 14552 KB Output is correct
59 Correct 57 ms 14384 KB Output is correct
60 Correct 57 ms 14416 KB Output is correct
61 Correct 56 ms 14420 KB Output is correct
62 Correct 58 ms 14352 KB Output is correct
63 Correct 55 ms 14164 KB Output is correct
64 Correct 56 ms 14160 KB Output is correct
65 Correct 57 ms 14160 KB Output is correct
66 Correct 54 ms 14252 KB Output is correct
67 Correct 60 ms 14420 KB Output is correct
68 Correct 54 ms 14352 KB Output is correct
69 Correct 58 ms 14416 KB Output is correct
70 Correct 63 ms 14420 KB Output is correct
71 Correct 1 ms 5720 KB Output is correct
72 Correct 4 ms 5980 KB Output is correct
73 Correct 2 ms 5980 KB Output is correct
74 Correct 2 ms 5980 KB Output is correct
75 Correct 3 ms 5980 KB Output is correct
76 Correct 2 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 2 ms 5980 KB Output is correct
80 Correct 61 ms 14520 KB Output is correct
81 Correct 61 ms 14420 KB Output is correct
82 Correct 56 ms 14416 KB Output is correct
83 Correct 61 ms 14208 KB Output is correct
84 Correct 2 ms 5724 KB Output is correct
85 Correct 2 ms 5724 KB Output is correct
86 Correct 2 ms 5748 KB Output is correct
87 Correct 3 ms 5976 KB Output is correct
88 Correct 3 ms 5980 KB Output is correct
89 Correct 3 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 5760 KB Output is correct
93 Correct 3 ms 5748 KB Output is correct
94 Correct 1 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 5724 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 2 ms 5720 KB Output is correct
103 Correct 1 ms 5720 KB Output is correct
104 Correct 7 ms 6744 KB Output is correct
105 Correct 14 ms 8796 KB Output is correct
106 Correct 2 ms 5724 KB Output is correct
107 Correct 26 ms 11600 KB Output is correct
108 Correct 34 ms 15184 KB Output is correct
109 Correct 2 ms 5720 KB Output is correct
110 Correct 47 ms 15860 KB Output is correct
111 Correct 53 ms 18004 KB Output is correct
112 Correct 2 ms 5724 KB Output is correct
113 Correct 77 ms 27556 KB Output is correct

Subtask #4
0 / 18.0

# Verdict Execution time Memory Grader output
1 Correct 48 ms 12472 KB Output is correct
2 Correct 49 ms 12612 KB Output is correct
3 Correct 44 ms 13016 KB Output is correct
4 Correct 51 ms 13008 KB Output is correct
5 Correct 47 ms 12888 KB Output is correct
6 Correct 48 ms 13524 KB Output is correct
7 Correct 61 ms 13260 KB Output is correct
8 Correct 44 ms 12880 KB Output is correct
9 Correct 47 ms 12724 KB Output is correct
10 Correct 49 ms 13268 KB Output is correct
11 Correct 2 ms 5724 KB Output is correct
12 Correct 33 ms 10900 KB Output is correct
13 Correct 32 ms 10972 KB Output is correct
14 Correct 31 ms 10912 KB Output is correct
15 Correct 32 ms 11116 KB Output is correct
16 Correct 31 ms 11100 KB Output is correct
17 Correct 33 ms 10964 KB Output is correct
18 Correct 36 ms 11152 KB Output is correct
19 Correct 37 ms 10968 KB Output is correct
20 Incorrect 1 ms 5724 KB Output isn't correct
21 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 2 ms 5564 KB Output is correct
3 Correct 1 ms 5724 KB Output is correct
4 Correct 1 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 1 ms 5724 KB Output is correct
8 Correct 1 ms 5724 KB Output is correct
9 Correct 2 ms 5720 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 2 ms 5720 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 2 ms 5724 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 ms 5724 KB Output is correct
19 Correct 2 ms 5724 KB Output is correct
20 Correct 1 ms 5724 KB Output is correct
21 Correct 1 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 2 ms 5724 KB Output is correct
27 Correct 2 ms 5724 KB Output is correct
28 Correct 2 ms 5980 KB Output is correct
29 Correct 2 ms 5724 KB Output is correct
30 Correct 2 ms 5724 KB Output is correct
31 Correct 2 ms 5980 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 2 ms 5724 KB Output is correct
34 Correct 3 ms 5980 KB Output is correct
35 Correct 2 ms 5720 KB Output is correct
36 Correct 2 ms 5720 KB Output is correct
37 Correct 2 ms 5724 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 1 ms 5724 KB Output is correct
40 Correct 1 ms 5724 KB Output is correct
41 Correct 1 ms 5724 KB Output is correct
42 Correct 2 ms 5724 KB Output is correct
43 Correct 2 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 2 ms 5724 KB Output is correct
49 Correct 2 ms 5724 KB Output is correct
50 Correct 1 ms 5752 KB Output is correct
51 Correct 1 ms 5724 KB Output is correct
52 Incorrect 1 ms 5752 KB Output isn't correct
53 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 51 ms 20140 KB Output is correct
2 Correct 51 ms 19536 KB Output is correct
3 Correct 45 ms 17744 KB Output is correct
4 Correct 8 ms 7768 KB Output is correct
5 Correct 6 ms 6760 KB Output is correct
6 Correct 12 ms 8956 KB Output is correct
7 Correct 1 ms 5724 KB Output is correct
8 Correct 24 ms 11612 KB Output is correct
9 Correct 36 ms 15196 KB Output is correct
10 Correct 2 ms 5724 KB Output is correct
11 Correct 46 ms 15856 KB Output is correct
12 Correct 56 ms 18008 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 1 ms 5724 KB Output is correct
15 Correct 2 ms 5564 KB Output is correct
16 Correct 1 ms 5724 KB Output is correct
17 Correct 1 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 1 ms 5724 KB Output is correct
21 Correct 1 ms 5724 KB Output is correct
22 Correct 2 ms 5720 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 2 ms 5720 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 2 ms 5724 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 2 ms 5724 KB Output is correct
31 Correct 1 ms 5724 KB Output is correct
32 Correct 2 ms 5724 KB Output is correct
33 Correct 1 ms 5724 KB Output is correct
34 Correct 1 ms 5724 KB Output is correct
35 Correct 2 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 2 ms 5724 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 50 ms 20048 KB Output is correct
40 Correct 60 ms 19476 KB Output is correct
41 Correct 34 ms 17776 KB Output is correct
42 Correct 8 ms 7768 KB Output is correct
43 Correct 2 ms 5724 KB Output is correct
44 Correct 1 ms 5724 KB Output is correct
45 Correct 1 ms 5976 KB Output is correct
46 Correct 1 ms 5724 KB Output is correct
47 Correct 1 ms 5720 KB Output is correct
48 Correct 2 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 2 ms 5612 KB Output is correct
56 Correct 2 ms 5564 KB Output is correct
57 Correct 63 ms 14420 KB Output is correct
58 Correct 57 ms 14552 KB Output is correct
59 Correct 57 ms 14384 KB Output is correct
60 Correct 57 ms 14416 KB Output is correct
61 Correct 56 ms 14420 KB Output is correct
62 Correct 58 ms 14352 KB Output is correct
63 Correct 55 ms 14164 KB Output is correct
64 Correct 56 ms 14160 KB Output is correct
65 Correct 57 ms 14160 KB Output is correct
66 Correct 54 ms 14252 KB Output is correct
67 Correct 60 ms 14420 KB Output is correct
68 Correct 54 ms 14352 KB Output is correct
69 Correct 58 ms 14416 KB Output is correct
70 Correct 63 ms 14420 KB Output is correct
71 Correct 1 ms 5720 KB Output is correct
72 Correct 4 ms 5980 KB Output is correct
73 Correct 2 ms 5980 KB Output is correct
74 Correct 2 ms 5980 KB Output is correct
75 Correct 3 ms 5980 KB Output is correct
76 Correct 2 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 2 ms 5980 KB Output is correct
80 Correct 61 ms 14520 KB Output is correct
81 Correct 61 ms 14420 KB Output is correct
82 Correct 56 ms 14416 KB Output is correct
83 Correct 61 ms 14208 KB Output is correct
84 Correct 2 ms 5724 KB Output is correct
85 Correct 2 ms 5724 KB Output is correct
86 Correct 2 ms 5748 KB Output is correct
87 Correct 3 ms 5976 KB Output is correct
88 Correct 3 ms 5980 KB Output is correct
89 Correct 3 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 5760 KB Output is correct
93 Correct 3 ms 5748 KB Output is correct
94 Correct 1 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 5724 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 2 ms 5720 KB Output is correct
103 Correct 1 ms 5720 KB Output is correct
104 Correct 7 ms 6744 KB Output is correct
105 Correct 14 ms 8796 KB Output is correct
106 Correct 2 ms 5724 KB Output is correct
107 Correct 26 ms 11600 KB Output is correct
108 Correct 34 ms 15184 KB Output is correct
109 Correct 2 ms 5720 KB Output is correct
110 Correct 47 ms 15860 KB Output is correct
111 Correct 53 ms 18004 KB Output is correct
112 Correct 2 ms 5724 KB Output is correct
113 Correct 77 ms 27556 KB Output is correct
114 Correct 48 ms 12472 KB Output is correct
115 Correct 49 ms 12612 KB Output is correct
116 Correct 44 ms 13016 KB Output is correct
117 Correct 51 ms 13008 KB Output is correct
118 Correct 47 ms 12888 KB Output is correct
119 Correct 48 ms 13524 KB Output is correct
120 Correct 61 ms 13260 KB Output is correct
121 Correct 44 ms 12880 KB Output is correct
122 Correct 47 ms 12724 KB Output is correct
123 Correct 49 ms 13268 KB Output is correct
124 Correct 2 ms 5724 KB Output is correct
125 Correct 33 ms 10900 KB Output is correct
126 Correct 32 ms 10972 KB Output is correct
127 Correct 31 ms 10912 KB Output is correct
128 Correct 32 ms 11116 KB Output is correct
129 Correct 31 ms 11100 KB Output is correct
130 Correct 33 ms 10964 KB Output is correct
131 Correct 36 ms 11152 KB Output is correct
132 Correct 37 ms 10968 KB Output is correct
133 Incorrect 1 ms 5724 KB Output isn't correct
134 Halted 0 ms 0 KB -