oj.uz

Submission #459638

# Submission time Handle Problem Language Result Execution time Memory
459638 2021-08-08T21:11:11 Z nickmet2004 Aesthetic (NOI20_aesthetic) C++11
73 / 100
 851 ms 134636 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 300005;
ll n , m , au[300005] , av[300005] , aw[300005];
ll u , v , w , A;
vector<pair<ll, pair<ll , ll> > >  adj[300005];
ll d1[300005] , dn[300005] , f[300005] , par[300005] , path[300005] , son[300005];
multiset<pair<ll , ll>> S;
vector<ll> B[300005] , T[300005];
void q(ll x){
    f[x] = 1;
    for(auto y : adj[x]){
        //cout << "h";
        auto it = S.find({dn[y.first] + y.second.first + d1[x] , y.second.second});
        if(f[y.first]) S.erase(it);
        else S.insert({dn[x] + y.second.first + d1[y.first] , y.second.second});
    }
}
void dfs(int u , int p){
    if(path[u]) son[u] = u;
    else son[u] = son[p];
    T[son[u]].emplace_back(u);
    for(int v : B[u]) dfs(v , u);
}
main (){
    ios_base::sync_with_stdio(0); cin.tie(0);
    cin >> n >> m;
    for(int i  =0; i <m; ++i) cin >> au[i] >> av[i] >> aw[i];
    for(int i = m - 1; ~i; --i){
        u = au[i] , v = av[i] , w= aw[i];
        adj[u].push_back({v , {w , A}});
        adj[v].push_back({u , {w , A}});
        A = max(A , w);
        //cout << "j";
    }

    for(int i = 1; i <= n; ++i) d1[i] = dn[i] = 1e18;
    d1[1] = 0;
    dn[n] = 0;
    priority_queue<pair<ll , ll> > pq;
    pq.push({0 , 1});
    while(pq.size()){
        auto T = pq.top(); pq.pop();
        u = T.second , w = -T.first;
        if(f[u])continue;
        f[u] = 1;
        for(auto e : adj[u]){
            v = e.first;
            if(!f[v] && d1[v] > w + e.second.first){
                par[v] = u;
                d1[v] = w + e.second.first;
                pq.push({-d1[v] , v});
            }
        }
        //cout << "k";
    }
    for(int i = 1; i <= n; ++i)f[i] = 0;
    //memset(f , 0 ,sizeof(f));
    pq.push({0, n});
    while(pq.size()){
        auto T = pq.top(); pq.pop();
        u = T.second , w = -T.first;
        if(f[u])continue;
        f[u] = 1;
        for(auto e : adj[u]){
            v = e.first;
            if(!f[v] && dn[v] > w + e.second.first){
                dn[v]= w + e.second.first;
                pq.push({-dn[v] , v});
            }
        }
        //cout << "l";
    }

    ll X = n;
    while(1){
        path[X] = 1;
        if(X == 1) break;
        X = par[X];
        //cout << "n";
    }

    for(int i = 1; i <= n; ++i)B[par[i]].emplace_back(i);
    dfs(1 , 0);

    for(int i = 1; i <= n; ++i) f[i] =0;
    ll s = n;
    ll ans = d1[n];
    //cout << "ka";
    ll k;
    while(1){
        //cout << "ha";
        if(s == 1)break;
        for(ll v : T[s]) q(v);
        s = par[s];
        k = S.begin()->first + S.begin()->second;
        auto i = S.begin();
        ++i;
        if(i != S.end()) k =min(k , i->first);
        ans = max(ans , k);
    }
    cout << ans;
}

Compilation message

Aesthetic.cpp:26:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   26 | main (){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21452 KB Output is correct
2 Correct 12 ms 21452 KB Output is correct
3 Correct 12 ms 21452 KB Output is correct
4 Correct 12 ms 21452 KB Output is correct
5 Correct 12 ms 21452 KB Output is correct
6 Correct 13 ms 21452 KB Output is correct
7 Correct 12 ms 21452 KB Output is correct
8 Correct 12 ms 21428 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21452 KB Output is correct
2 Correct 12 ms 21452 KB Output is correct
3 Correct 12 ms 21452 KB Output is correct
4 Correct 12 ms 21452 KB Output is correct
5 Correct 12 ms 21452 KB Output is correct
6 Correct 13 ms 21452 KB Output is correct
7 Correct 12 ms 21452 KB Output is correct
8 Correct 12 ms 21428 KB Output is correct
9 Correct 17 ms 21776 KB Output is correct
10 Correct 13 ms 21776 KB Output is correct
11 Correct 14 ms 21716 KB Output is correct
12 Correct 16 ms 21708 KB Output is correct
13 Correct 15 ms 21776 KB Output is correct
14 Correct 14 ms 21792 KB Output is correct
15 Correct 14 ms 21724 KB Output is correct
16 Correct 13 ms 21708 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 728 ms 70200 KB Output is correct
2 Correct 715 ms 69564 KB Output is correct
3 Correct 719 ms 69736 KB Output is correct
4 Correct 731 ms 70124 KB Output is correct
5 Correct 707 ms 70212 KB Output is correct
6 Correct 751 ms 71340 KB Output is correct
7 Correct 736 ms 70744 KB Output is correct
8 Correct 724 ms 71604 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 779 ms 71812 KB Output is correct
2 Correct 759 ms 70556 KB Output is correct
3 Correct 747 ms 68832 KB Output is correct
4 Correct 722 ms 70912 KB Output is correct
5 Correct 726 ms 70860 KB Output is correct
6 Correct 756 ms 71560 KB Output is correct
7 Correct 730 ms 70636 KB Output is correct
8 Correct 707 ms 70904 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 565 ms 64948 KB Output is correct
2 Correct 297 ms 68912 KB Output is correct
3 Correct 325 ms 59824 KB Output is correct
4 Correct 278 ms 58676 KB Output is correct
5 Correct 297 ms 58436 KB Output is correct
6 Correct 275 ms 59720 KB Output is correct
7 Correct 270 ms 58068 KB Output is correct
8 Correct 270 ms 58604 KB Output is correct
9 Correct 249 ms 57504 KB Output is correct
10 Correct 293 ms 60640 KB Output is correct
11 Correct 268 ms 58260 KB Output is correct
12 Correct 688 ms 65676 KB Output is correct
13 Correct 260 ms 58532 KB Output is correct
14 Correct 237 ms 80856 KB Output is correct
15 Correct 183 ms 70828 KB Output is correct
16 Correct 557 ms 64732 KB Output is correct
17 Correct 565 ms 64660 KB Output is correct
18 Correct 501 ms 63100 KB Output is correct
19 Correct 322 ms 69060 KB Output is correct
20 Correct 300 ms 69108 KB Output is correct
21 Correct 301 ms 68956 KB Output is correct
22 Correct 297 ms 68980 KB Output is correct

Subtask #6
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 565 ms 64948 KB Output is correct
2 Correct 297 ms 68912 KB Output is correct
3 Correct 325 ms 59824 KB Output is correct
4 Correct 278 ms 58676 KB Output is correct
5 Correct 297 ms 58436 KB Output is correct
6 Correct 275 ms 59720 KB Output is correct
7 Correct 270 ms 58068 KB Output is correct
8 Correct 270 ms 58604 KB Output is correct
9 Correct 249 ms 57504 KB Output is correct
10 Correct 293 ms 60640 KB Output is correct
11 Correct 268 ms 58260 KB Output is correct
12 Correct 688 ms 65676 KB Output is correct
13 Correct 260 ms 58532 KB Output is correct
14 Correct 237 ms 80856 KB Output is correct
15 Correct 183 ms 70828 KB Output is correct
16 Correct 557 ms 64732 KB Output is correct
17 Correct 565 ms 64660 KB Output is correct
18 Correct 501 ms 63100 KB Output is correct
19 Correct 322 ms 69060 KB Output is correct
20 Correct 300 ms 69108 KB Output is correct
21 Correct 301 ms 68956 KB Output is correct
22 Correct 297 ms 68980 KB Output is correct
23 Correct 717 ms 66060 KB Output is correct
24 Correct 399 ms 69180 KB Output is correct
25 Correct 386 ms 58876 KB Output is correct
26 Correct 376 ms 58444 KB Output is correct
27 Correct 350 ms 58312 KB Output is correct
28 Correct 453 ms 60036 KB Output is correct
29 Correct 412 ms 58648 KB Output is correct
30 Correct 394 ms 59432 KB Output is correct
31 Correct 413 ms 59848 KB Output is correct
32 Correct 404 ms 57776 KB Output is correct
33 Correct 437 ms 59272 KB Output is correct
34 Correct 778 ms 65916 KB Output is correct
35 Correct 465 ms 58412 KB Output is correct
36 Correct 279 ms 83716 KB Output is correct
37 Correct 324 ms 83684 KB Output is correct
38 Correct 749 ms 65536 KB Output is correct
39 Correct 725 ms 65212 KB Output is correct
40 Correct 802 ms 66244 KB Output is correct
41 Correct 383 ms 69188 KB Output is correct
42 Correct 358 ms 69152 KB Output is correct
43 Correct 357 ms 69280 KB Output is correct
44 Correct 360 ms 69224 KB Output is correct

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 14 ms 21452 KB Output is correct
2 Correct 12 ms 21452 KB Output is correct
3 Correct 12 ms 21452 KB Output is correct
4 Correct 12 ms 21452 KB Output is correct
5 Correct 12 ms 21452 KB Output is correct
6 Correct 13 ms 21452 KB Output is correct
7 Correct 12 ms 21452 KB Output is correct
8 Correct 12 ms 21428 KB Output is correct
9 Correct 17 ms 21776 KB Output is correct
10 Correct 13 ms 21776 KB Output is correct
11 Correct 14 ms 21716 KB Output is correct
12 Correct 16 ms 21708 KB Output is correct
13 Correct 15 ms 21776 KB Output is correct
14 Correct 14 ms 21792 KB Output is correct
15 Correct 14 ms 21724 KB Output is correct
16 Correct 13 ms 21708 KB Output is correct
17 Correct 728 ms 70200 KB Output is correct
18 Correct 715 ms 69564 KB Output is correct
19 Correct 719 ms 69736 KB Output is correct
20 Correct 731 ms 70124 KB Output is correct
21 Correct 707 ms 70212 KB Output is correct
22 Correct 751 ms 71340 KB Output is correct
23 Correct 736 ms 70744 KB Output is correct
24 Correct 724 ms 71604 KB Output is correct
25 Correct 779 ms 71812 KB Output is correct
26 Correct 759 ms 70556 KB Output is correct
27 Correct 747 ms 68832 KB Output is correct
28 Correct 722 ms 70912 KB Output is correct
29 Correct 726 ms 70860 KB Output is correct
30 Correct 756 ms 71560 KB Output is correct
31 Correct 730 ms 70636 KB Output is correct
32 Correct 707 ms 70904 KB Output is correct
33 Correct 565 ms 64948 KB Output is correct
34 Correct 297 ms 68912 KB Output is correct
35 Correct 325 ms 59824 KB Output is correct
36 Correct 278 ms 58676 KB Output is correct
37 Correct 297 ms 58436 KB Output is correct
38 Correct 275 ms 59720 KB Output is correct
39 Correct 270 ms 58068 KB Output is correct
40 Correct 270 ms 58604 KB Output is correct
41 Correct 249 ms 57504 KB Output is correct
42 Correct 293 ms 60640 KB Output is correct
43 Correct 268 ms 58260 KB Output is correct
44 Correct 688 ms 65676 KB Output is correct
45 Correct 260 ms 58532 KB Output is correct
46 Correct 237 ms 80856 KB Output is correct
47 Correct 183 ms 70828 KB Output is correct
48 Correct 557 ms 64732 KB Output is correct
49 Correct 565 ms 64660 KB Output is correct
50 Correct 501 ms 63100 KB Output is correct
51 Correct 322 ms 69060 KB Output is correct
52 Correct 300 ms 69108 KB Output is correct
53 Correct 301 ms 68956 KB Output is correct
54 Correct 297 ms 68980 KB Output is correct
55 Correct 717 ms 66060 KB Output is correct
56 Correct 399 ms 69180 KB Output is correct
57 Correct 386 ms 58876 KB Output is correct
58 Correct 376 ms 58444 KB Output is correct
59 Correct 350 ms 58312 KB Output is correct
60 Correct 453 ms 60036 KB Output is correct
61 Correct 412 ms 58648 KB Output is correct
62 Correct 394 ms 59432 KB Output is correct
63 Correct 413 ms 59848 KB Output is correct
64 Correct 404 ms 57776 KB Output is correct
65 Correct 437 ms 59272 KB Output is correct
66 Correct 778 ms 65916 KB Output is correct
67 Correct 465 ms 58412 KB Output is correct
68 Correct 279 ms 83716 KB Output is correct
69 Correct 324 ms 83684 KB Output is correct
70 Correct 749 ms 65536 KB Output is correct
71 Correct 725 ms 65212 KB Output is correct
72 Correct 802 ms 66244 KB Output is correct
73 Correct 383 ms 69188 KB Output is correct
74 Correct 358 ms 69152 KB Output is correct
75 Correct 357 ms 69280 KB Output is correct
76 Correct 360 ms 69224 KB Output is correct
77 Correct 851 ms 66600 KB Output is correct
78 Correct 389 ms 69152 KB Output is correct
79 Correct 470 ms 59176 KB Output is correct
80 Correct 451 ms 57900 KB Output is correct
81 Correct 435 ms 59244 KB Output is correct
82 Correct 475 ms 59000 KB Output is correct
83 Correct 453 ms 58356 KB Output is correct
84 Correct 456 ms 58444 KB Output is correct
85 Correct 427 ms 59424 KB Output is correct
86 Correct 466 ms 59164 KB Output is correct
87 Correct 430 ms 58352 KB Output is correct
88 Correct 692 ms 65768 KB Output is correct
89 Correct 471 ms 58860 KB Output is correct
90 Correct 297 ms 83684 KB Output is correct
91 Correct 344 ms 83656 KB Output is correct
92 Runtime error 824 ms 134636 KB Execution killed with signal 6
93 Halted 0 ms 0 KB -