oj.uz

Submission #459613

# Submission time Handle Problem Language Result Execution time Memory
459613 2021-08-08T20:32:09 Z nickmet2004 Aesthetic (NOI20_aesthetic) C++11
73 / 100
 897 ms 142596 KB 
#include<bits/stdc++.h>
#define ll long long
using namespace std;
const int N = 3e5 + 1;
ll n , m , au[N] , av[N] , aw[N];
ll u , v , w , A = 0;
vector<pair<ll, pair<ll , ll> > >  adj[N];
ll d1[N] , dn[N] , f[N] , par[N] , path[N] , son[N];
priority_queue<pair<ll , ll> > pq;
multiset<pair<ll , ll>> S;
vector<ll> B[N] , T[N];
void q(int 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;
    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(d1[v] > w + e.second.first){
                par[v] = u;
                d1[v] = w + e.second.first;
                pq.push({-d1[v] , v});
            }
        }
        //cout << "k";
    }

    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(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);

    memset(f , 0 ,sizeof(f));
    u = n;
    ll ans = d1[n];
    //cout << "ka";

    while(1){
        //cout << "ha";
        if(u == 1)break;
        for(ll v : T[u]) q(v);
        if(!S.size())continue;
        ll 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);
        u = par[u];
    }
    cout << ans;

}

Compilation message

Aesthetic.cpp:27:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   27 | main (){
      | ^~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23756 KB Output is correct
2 Correct 14 ms 23840 KB Output is correct
3 Correct 13 ms 23812 KB Output is correct
4 Correct 13 ms 23884 KB Output is correct
5 Correct 13 ms 23884 KB Output is correct
6 Correct 15 ms 23860 KB Output is correct
7 Correct 13 ms 23836 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct

Subtask #2
8.0 / 8.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23756 KB Output is correct
2 Correct 14 ms 23840 KB Output is correct
3 Correct 13 ms 23812 KB Output is correct
4 Correct 13 ms 23884 KB Output is correct
5 Correct 13 ms 23884 KB Output is correct
6 Correct 15 ms 23860 KB Output is correct
7 Correct 13 ms 23836 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct
9 Correct 15 ms 24140 KB Output is correct
10 Correct 15 ms 24140 KB Output is correct
11 Correct 15 ms 24164 KB Output is correct
12 Correct 15 ms 24164 KB Output is correct
13 Correct 15 ms 24168 KB Output is correct
14 Correct 14 ms 24140 KB Output is correct
15 Correct 14 ms 24168 KB Output is correct
16 Correct 15 ms 24168 KB Output is correct

Subtask #3
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 714 ms 71660 KB Output is correct
2 Correct 726 ms 71060 KB Output is correct
3 Correct 730 ms 71288 KB Output is correct
4 Correct 684 ms 71472 KB Output is correct
5 Correct 692 ms 71784 KB Output is correct
6 Correct 721 ms 72860 KB Output is correct
7 Correct 739 ms 72396 KB Output is correct
8 Correct 742 ms 72988 KB Output is correct

Subtask #4
15.0 / 15.0

# Verdict Execution time Memory Grader output
1 Correct 753 ms 73284 KB Output is correct
2 Correct 749 ms 72100 KB Output is correct
3 Correct 731 ms 70444 KB Output is correct
4 Correct 735 ms 72444 KB Output is correct
5 Correct 714 ms 72212 KB Output is correct
6 Correct 715 ms 73200 KB Output is correct
7 Correct 729 ms 72364 KB Output is correct
8 Correct 694 ms 72372 KB Output is correct

Subtask #5
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 592 ms 67096 KB Output is correct
2 Correct 309 ms 73632 KB Output is correct
3 Correct 274 ms 65356 KB Output is correct
4 Correct 283 ms 64284 KB Output is correct
5 Correct 257 ms 63892 KB Output is correct
6 Correct 287 ms 65216 KB Output is correct
7 Correct 254 ms 63548 KB Output is correct
8 Correct 254 ms 64056 KB Output is correct
9 Correct 241 ms 63096 KB Output is correct
10 Correct 308 ms 66304 KB Output is correct
11 Correct 254 ms 63760 KB Output is correct
12 Correct 625 ms 70720 KB Output is correct
13 Correct 257 ms 64092 KB Output is correct
14 Correct 248 ms 86048 KB Output is correct
15 Correct 184 ms 76012 KB Output is correct
16 Correct 494 ms 69788 KB Output is correct
17 Correct 552 ms 69784 KB Output is correct
18 Correct 453 ms 68188 KB Output is correct
19 Correct 301 ms 73832 KB Output is correct
20 Correct 300 ms 73924 KB Output is correct
21 Correct 300 ms 73836 KB Output is correct
22 Correct 298 ms 73720 KB Output is correct

Subtask #6
22.0 / 22.0

# Verdict Execution time Memory Grader output
1 Correct 592 ms 67096 KB Output is correct
2 Correct 309 ms 73632 KB Output is correct
3 Correct 274 ms 65356 KB Output is correct
4 Correct 283 ms 64284 KB Output is correct
5 Correct 257 ms 63892 KB Output is correct
6 Correct 287 ms 65216 KB Output is correct
7 Correct 254 ms 63548 KB Output is correct
8 Correct 254 ms 64056 KB Output is correct
9 Correct 241 ms 63096 KB Output is correct
10 Correct 308 ms 66304 KB Output is correct
11 Correct 254 ms 63760 KB Output is correct
12 Correct 625 ms 70720 KB Output is correct
13 Correct 257 ms 64092 KB Output is correct
14 Correct 248 ms 86048 KB Output is correct
15 Correct 184 ms 76012 KB Output is correct
16 Correct 494 ms 69788 KB Output is correct
17 Correct 552 ms 69784 KB Output is correct
18 Correct 453 ms 68188 KB Output is correct
19 Correct 301 ms 73832 KB Output is correct
20 Correct 300 ms 73924 KB Output is correct
21 Correct 300 ms 73836 KB Output is correct
22 Correct 298 ms 73720 KB Output is correct
23 Correct 697 ms 71112 KB Output is correct
24 Correct 359 ms 73924 KB Output is correct
25 Correct 387 ms 64528 KB Output is correct
26 Correct 366 ms 64132 KB Output is correct
27 Correct 347 ms 63908 KB Output is correct
28 Correct 452 ms 65640 KB Output is correct
29 Correct 402 ms 64272 KB Output is correct
30 Correct 355 ms 64780 KB Output is correct
31 Correct 430 ms 65436 KB Output is correct
32 Correct 396 ms 63344 KB Output is correct
33 Correct 430 ms 65000 KB Output is correct
34 Correct 699 ms 71068 KB Output is correct
35 Correct 428 ms 64064 KB Output is correct
36 Correct 278 ms 88420 KB Output is correct
37 Correct 302 ms 89264 KB Output is correct
38 Correct 715 ms 70496 KB Output is correct
39 Correct 725 ms 70248 KB Output is correct
40 Correct 818 ms 71312 KB Output is correct
41 Correct 405 ms 73868 KB Output is correct
42 Correct 369 ms 73912 KB Output is correct
43 Correct 371 ms 74012 KB Output is correct
44 Correct 370 ms 73936 KB Output is correct

Subtask #7
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 13 ms 23756 KB Output is correct
2 Correct 14 ms 23840 KB Output is correct
3 Correct 13 ms 23812 KB Output is correct
4 Correct 13 ms 23884 KB Output is correct
5 Correct 13 ms 23884 KB Output is correct
6 Correct 15 ms 23860 KB Output is correct
7 Correct 13 ms 23836 KB Output is correct
8 Correct 13 ms 23808 KB Output is correct
9 Correct 15 ms 24140 KB Output is correct
10 Correct 15 ms 24140 KB Output is correct
11 Correct 15 ms 24164 KB Output is correct
12 Correct 15 ms 24164 KB Output is correct
13 Correct 15 ms 24168 KB Output is correct
14 Correct 14 ms 24140 KB Output is correct
15 Correct 14 ms 24168 KB Output is correct
16 Correct 15 ms 24168 KB Output is correct
17 Correct 714 ms 71660 KB Output is correct
18 Correct 726 ms 71060 KB Output is correct
19 Correct 730 ms 71288 KB Output is correct
20 Correct 684 ms 71472 KB Output is correct
21 Correct 692 ms 71784 KB Output is correct
22 Correct 721 ms 72860 KB Output is correct
23 Correct 739 ms 72396 KB Output is correct
24 Correct 742 ms 72988 KB Output is correct
25 Correct 753 ms 73284 KB Output is correct
26 Correct 749 ms 72100 KB Output is correct
27 Correct 731 ms 70444 KB Output is correct
28 Correct 735 ms 72444 KB Output is correct
29 Correct 714 ms 72212 KB Output is correct
30 Correct 715 ms 73200 KB Output is correct
31 Correct 729 ms 72364 KB Output is correct
32 Correct 694 ms 72372 KB Output is correct
33 Correct 592 ms 67096 KB Output is correct
34 Correct 309 ms 73632 KB Output is correct
35 Correct 274 ms 65356 KB Output is correct
36 Correct 283 ms 64284 KB Output is correct
37 Correct 257 ms 63892 KB Output is correct
38 Correct 287 ms 65216 KB Output is correct
39 Correct 254 ms 63548 KB Output is correct
40 Correct 254 ms 64056 KB Output is correct
41 Correct 241 ms 63096 KB Output is correct
42 Correct 308 ms 66304 KB Output is correct
43 Correct 254 ms 63760 KB Output is correct
44 Correct 625 ms 70720 KB Output is correct
45 Correct 257 ms 64092 KB Output is correct
46 Correct 248 ms 86048 KB Output is correct
47 Correct 184 ms 76012 KB Output is correct
48 Correct 494 ms 69788 KB Output is correct
49 Correct 552 ms 69784 KB Output is correct
50 Correct 453 ms 68188 KB Output is correct
51 Correct 301 ms 73832 KB Output is correct
52 Correct 300 ms 73924 KB Output is correct
53 Correct 300 ms 73836 KB Output is correct
54 Correct 298 ms 73720 KB Output is correct
55 Correct 697 ms 71112 KB Output is correct
56 Correct 359 ms 73924 KB Output is correct
57 Correct 387 ms 64528 KB Output is correct
58 Correct 366 ms 64132 KB Output is correct
59 Correct 347 ms 63908 KB Output is correct
60 Correct 452 ms 65640 KB Output is correct
61 Correct 402 ms 64272 KB Output is correct
62 Correct 355 ms 64780 KB Output is correct
63 Correct 430 ms 65436 KB Output is correct
64 Correct 396 ms 63344 KB Output is correct
65 Correct 430 ms 65000 KB Output is correct
66 Correct 699 ms 71068 KB Output is correct
67 Correct 428 ms 64064 KB Output is correct
68 Correct 278 ms 88420 KB Output is correct
69 Correct 302 ms 89264 KB Output is correct
70 Correct 715 ms 70496 KB Output is correct
71 Correct 725 ms 70248 KB Output is correct
72 Correct 818 ms 71312 KB Output is correct
73 Correct 405 ms 73868 KB Output is correct
74 Correct 369 ms 73912 KB Output is correct
75 Correct 371 ms 74012 KB Output is correct
76 Correct 370 ms 73936 KB Output is correct
77 Correct 897 ms 74028 KB Output is correct
78 Correct 384 ms 76224 KB Output is correct
79 Correct 465 ms 67144 KB Output is correct
80 Correct 485 ms 65792 KB Output is correct
81 Correct 473 ms 67076 KB Output is correct
82 Correct 484 ms 66768 KB Output is correct
83 Correct 453 ms 66108 KB Output is correct
84 Correct 491 ms 66408 KB Output is correct
85 Correct 423 ms 67356 KB Output is correct
86 Correct 470 ms 67052 KB Output is correct
87 Correct 445 ms 66324 KB Output is correct
88 Correct 656 ms 73072 KB Output is correct
89 Correct 438 ms 66880 KB Output is correct
90 Correct 328 ms 89140 KB Output is correct
91 Correct 337 ms 89892 KB Output is correct
92 Runtime error 856 ms 142596 KB Execution killed with signal 6
93 Halted 0 ms 0 KB -