oj.uz

답안 #1083987

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
1083987 2024-09-04T18:08:18 Z Tymond 꿈 (IOI13_dreaming) C++17
47 / 100
 69 ms 27724 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, l + ok[0] + ok[1]);
    return ans;
}

Subtask #1
14.0 / 14.0

# 결과 실행 시간 메모리 Grader output
1 Correct 48 ms 19944 KB Output is correct
2 Correct 51 ms 19516 KB Output is correct
3 Correct 34 ms 17752 KB Output is correct
4 Correct 8 ms 7772 KB Output is correct
5 Correct 6 ms 6748 KB Output is correct
6 Correct 13 ms 8792 KB Output is correct
7 Correct 1 ms 5720 KB Output is correct
8 Correct 24 ms 11532 KB Output is correct
9 Correct 31 ms 15208 KB Output is correct
10 Correct 1 ms 5720 KB Output is correct
11 Correct 53 ms 15824 KB Output is correct
12 Correct 54 ms 18004 KB Output is correct
13 Correct 1 ms 5724 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5560 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 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 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 1 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 1 ms 5720 KB Output is correct
16 Correct 1 ms 5724 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 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 1 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 ms 5724 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct

Subtask #3
23.0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 48 ms 19944 KB Output is correct
2 Correct 51 ms 19516 KB Output is correct
3 Correct 34 ms 17752 KB Output is correct
4 Correct 8 ms 7772 KB Output is correct
5 Correct 6 ms 6748 KB Output is correct
6 Correct 13 ms 8792 KB Output is correct
7 Correct 1 ms 5720 KB Output is correct
8 Correct 24 ms 11532 KB Output is correct
9 Correct 31 ms 15208 KB Output is correct
10 Correct 1 ms 5720 KB Output is correct
11 Correct 53 ms 15824 KB Output is correct
12 Correct 54 ms 18004 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 2 ms 5560 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 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 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 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 1 ms 5720 KB Output is correct
29 Correct 1 ms 5724 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 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 1 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 1 ms 5724 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 49 ms 19956 KB Output is correct
40 Correct 49 ms 19540 KB Output is correct
41 Correct 37 ms 17756 KB Output is correct
42 Correct 9 ms 7772 KB Output is correct
43 Correct 1 ms 5720 KB Output is correct
44 Correct 2 ms 5548 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 5720 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 5720 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 54 ms 14516 KB Output is correct
58 Correct 56 ms 14424 KB Output is correct
59 Correct 58 ms 14416 KB Output is correct
60 Correct 60 ms 14416 KB Output is correct
61 Correct 55 ms 14416 KB Output is correct
62 Correct 55 ms 14420 KB Output is correct
63 Correct 54 ms 14116 KB Output is correct
64 Correct 56 ms 14164 KB Output is correct
65 Correct 53 ms 14072 KB Output is correct
66 Correct 54 ms 14164 KB Output is correct
67 Correct 57 ms 14416 KB Output is correct
68 Correct 64 ms 14604 KB Output is correct
69 Correct 57 ms 14420 KB Output is correct
70 Correct 60 ms 14420 KB Output is correct
71 Correct 2 ms 5724 KB Output is correct
72 Correct 2 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 2 ms 5980 KB Output is correct
76 Correct 3 ms 5980 KB Output is correct
77 Correct 2 ms 5980 KB Output is correct
78 Correct 3 ms 5976 KB Output is correct
79 Correct 2 ms 5976 KB Output is correct
80 Correct 58 ms 14348 KB Output is correct
81 Correct 63 ms 14416 KB Output is correct
82 Correct 54 ms 14240 KB Output is correct
83 Correct 57 ms 14420 KB Output is correct
84 Correct 2 ms 5724 KB Output is correct
85 Correct 2 ms 5756 KB Output is correct
86 Correct 2 ms 5724 KB Output is correct
87 Correct 2 ms 5980 KB Output is correct
88 Correct 2 ms 5980 KB Output is correct
89 Correct 2 ms 5980 KB Output is correct
90 Correct 2 ms 5980 KB Output is correct
91 Correct 2 ms 5980 KB Output is correct
92 Correct 3 ms 5980 KB Output is correct
93 Correct 3 ms 5980 KB Output is correct
94 Correct 1 ms 5724 KB Output is correct
95 Correct 1 ms 5724 KB Output is correct
96 Correct 2 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 1 ms 5724 KB Output is correct
103 Correct 1 ms 5724 KB Output is correct
104 Correct 6 ms 6748 KB Output is correct
105 Correct 13 ms 8868 KB Output is correct
106 Correct 1 ms 5724 KB Output is correct
107 Correct 30 ms 11716 KB Output is correct
108 Correct 31 ms 15304 KB Output is correct
109 Correct 1 ms 5724 KB Output is correct
110 Correct 44 ms 15908 KB Output is correct
111 Correct 48 ms 17900 KB Output is correct
112 Correct 2 ms 5724 KB Output is correct
113 Correct 69 ms 27724 KB Output is correct

Subtask #4
0 / 18.0

# 결과 실행 시간 메모리 Grader output
1 Correct 44 ms 12504 KB Output is correct
2 Incorrect 47 ms 12944 KB Output isn't correct
3 Halted 0 ms 0 KB -

Subtask #5
0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 5724 KB Output is correct
2 Correct 2 ms 5724 KB Output is correct
3 Correct 2 ms 5560 KB Output is correct
4 Correct 2 ms 5724 KB Output is correct
5 Correct 1 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 5724 KB Output is correct
10 Correct 1 ms 5724 KB Output is correct
11 Correct 1 ms 5724 KB Output is correct
12 Correct 1 ms 5724 KB Output is correct
13 Correct 2 ms 5724 KB Output is correct
14 Correct 2 ms 5724 KB Output is correct
15 Correct 1 ms 5720 KB Output is correct
16 Correct 1 ms 5724 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 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 1 ms 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 ms 5724 KB Output is correct
25 Correct 1 ms 5724 KB Output is correct
26 Correct 2 ms 5720 KB Output is correct
27 Correct 2 ms 5720 KB Output is correct
28 Correct 2 ms 5980 KB Output is correct
29 Correct 1 ms 5724 KB Output is correct
30 Correct 3 ms 5780 KB Output is correct
31 Correct 3 ms 5980 KB Output is correct
32 Incorrect 2 ms 5724 KB Output isn't correct
33 Halted 0 ms 0 KB -

Subtask #6
0 / 23.0

# 결과 실행 시간 메모리 Grader output
1 Correct 48 ms 19944 KB Output is correct
2 Correct 51 ms 19516 KB Output is correct
3 Correct 34 ms 17752 KB Output is correct
4 Correct 8 ms 7772 KB Output is correct
5 Correct 6 ms 6748 KB Output is correct
6 Correct 13 ms 8792 KB Output is correct
7 Correct 1 ms 5720 KB Output is correct
8 Correct 24 ms 11532 KB Output is correct
9 Correct 31 ms 15208 KB Output is correct
10 Correct 1 ms 5720 KB Output is correct
11 Correct 53 ms 15824 KB Output is correct
12 Correct 54 ms 18004 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 2 ms 5560 KB Output is correct
17 Correct 2 ms 5724 KB Output is correct
18 Correct 1 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 5724 KB Output is correct
23 Correct 1 ms 5724 KB Output is correct
24 Correct 1 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 1 ms 5720 KB Output is correct
29 Correct 1 ms 5724 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 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 1 ms 5724 KB Output is correct
36 Correct 1 ms 5724 KB Output is correct
37 Correct 1 ms 5724 KB Output is correct
38 Correct 1 ms 5724 KB Output is correct
39 Correct 49 ms 19956 KB Output is correct
40 Correct 49 ms 19540 KB Output is correct
41 Correct 37 ms 17756 KB Output is correct
42 Correct 9 ms 7772 KB Output is correct
43 Correct 1 ms 5720 KB Output is correct
44 Correct 2 ms 5548 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 5720 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 5720 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 54 ms 14516 KB Output is correct
58 Correct 56 ms 14424 KB Output is correct
59 Correct 58 ms 14416 KB Output is correct
60 Correct 60 ms 14416 KB Output is correct
61 Correct 55 ms 14416 KB Output is correct
62 Correct 55 ms 14420 KB Output is correct
63 Correct 54 ms 14116 KB Output is correct
64 Correct 56 ms 14164 KB Output is correct
65 Correct 53 ms 14072 KB Output is correct
66 Correct 54 ms 14164 KB Output is correct
67 Correct 57 ms 14416 KB Output is correct
68 Correct 64 ms 14604 KB Output is correct
69 Correct 57 ms 14420 KB Output is correct
70 Correct 60 ms 14420 KB Output is correct
71 Correct 2 ms 5724 KB Output is correct
72 Correct 2 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 2 ms 5980 KB Output is correct
76 Correct 3 ms 5980 KB Output is correct
77 Correct 2 ms 5980 KB Output is correct
78 Correct 3 ms 5976 KB Output is correct
79 Correct 2 ms 5976 KB Output is correct
80 Correct 58 ms 14348 KB Output is correct
81 Correct 63 ms 14416 KB Output is correct
82 Correct 54 ms 14240 KB Output is correct
83 Correct 57 ms 14420 KB Output is correct
84 Correct 2 ms 5724 KB Output is correct
85 Correct 2 ms 5756 KB Output is correct
86 Correct 2 ms 5724 KB Output is correct
87 Correct 2 ms 5980 KB Output is correct
88 Correct 2 ms 5980 KB Output is correct
89 Correct 2 ms 5980 KB Output is correct
90 Correct 2 ms 5980 KB Output is correct
91 Correct 2 ms 5980 KB Output is correct
92 Correct 3 ms 5980 KB Output is correct
93 Correct 3 ms 5980 KB Output is correct
94 Correct 1 ms 5724 KB Output is correct
95 Correct 1 ms 5724 KB Output is correct
96 Correct 2 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 1 ms 5724 KB Output is correct
103 Correct 1 ms 5724 KB Output is correct
104 Correct 6 ms 6748 KB Output is correct
105 Correct 13 ms 8868 KB Output is correct
106 Correct 1 ms 5724 KB Output is correct
107 Correct 30 ms 11716 KB Output is correct
108 Correct 31 ms 15304 KB Output is correct
109 Correct 1 ms 5724 KB Output is correct
110 Correct 44 ms 15908 KB Output is correct
111 Correct 48 ms 17900 KB Output is correct
112 Correct 2 ms 5724 KB Output is correct
113 Correct 69 ms 27724 KB Output is correct
114 Correct 44 ms 12504 KB Output is correct
115 Incorrect 47 ms 12944 KB Output isn't correct
116 Halted 0 ms 0 KB -