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답안 #459642

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
459642 2021-08-08T21:18:39 Z nickmet2004 Aesthetic (NOI20_aesthetic) C++11
73 / 100
 841 ms 134592 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]==1) S.erase(it);
        if(f[y.first] == 0) 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

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 21452 KB Output is correct
2 Correct 14 ms 21472 KB Output is correct
3 Correct 14 ms 21452 KB Output is correct
4 Correct 12 ms 21540 KB Output is correct
5 Correct 12 ms 21520 KB Output is correct
6 Correct 12 ms 21452 KB Output is correct
7 Correct 12 ms 21436 KB Output is correct
8 Correct 12 ms 21452 KB Output is correct

Subtask #2
8.0 / 8.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 21452 KB Output is correct
2 Correct 14 ms 21472 KB Output is correct
3 Correct 14 ms 21452 KB Output is correct
4 Correct 12 ms 21540 KB Output is correct
5 Correct 12 ms 21520 KB Output is correct
6 Correct 12 ms 21452 KB Output is correct
7 Correct 12 ms 21436 KB Output is correct
8 Correct 12 ms 21452 KB Output is correct
9 Correct 14 ms 21708 KB Output is correct
10 Correct 14 ms 21832 KB Output is correct
11 Correct 14 ms 21820 KB Output is correct
12 Correct 14 ms 21708 KB Output is correct
13 Correct 13 ms 21708 KB Output is correct
14 Correct 13 ms 21724 KB Output is correct
15 Correct 13 ms 21708 KB Output is correct
16 Correct 13 ms 21708 KB Output is correct

Subtask #3
7.0 / 7.0

# 결과 실행 시간 메모리 Grader output
1 Correct 726 ms 70208 KB Output is correct
2 Correct 727 ms 69512 KB Output is correct
3 Correct 705 ms 69640 KB Output is correct
4 Correct 703 ms 69808 KB Output is correct
5 Correct 690 ms 70128 KB Output is correct
6 Correct 743 ms 71424 KB Output is correct
7 Correct 774 ms 70840 KB Output is correct
8 Correct 758 ms 71504 KB Output is correct

Subtask #4
15.0 / 15.0

# 결과 실행 시간 메모리 Grader output
1 Correct 751 ms 71856 KB Output is correct
2 Correct 711 ms 70560 KB Output is correct
3 Correct 723 ms 68876 KB Output is correct
4 Correct 734 ms 70976 KB Output is correct
5 Correct 715 ms 70600 KB Output is correct
6 Correct 722 ms 71460 KB Output is correct
7 Correct 714 ms 70668 KB Output is correct
8 Correct 717 ms 70852 KB Output is correct

Subtask #5
16.0 / 16.0

# 결과 실행 시간 메모리 Grader output
1 Correct 523 ms 65044 KB Output is correct
2 Correct 311 ms 68804 KB Output is correct
3 Correct 275 ms 59896 KB Output is correct
4 Correct 261 ms 58792 KB Output is correct
5 Correct 266 ms 58444 KB Output is correct
6 Correct 269 ms 59704 KB Output is correct
7 Correct 256 ms 58064 KB Output is correct
8 Correct 284 ms 58588 KB Output is correct
9 Correct 249 ms 57556 KB Output is correct
10 Correct 333 ms 60600 KB Output is correct
11 Correct 257 ms 58192 KB Output is correct
12 Correct 634 ms 65572 KB Output is correct
13 Correct 280 ms 58492 KB Output is correct
14 Correct 248 ms 80948 KB Output is correct
15 Correct 181 ms 70724 KB Output is correct
16 Correct 499 ms 64740 KB Output is correct
17 Correct 566 ms 64756 KB Output is correct
18 Correct 494 ms 63044 KB Output is correct
19 Correct 310 ms 69076 KB Output is correct
20 Correct 302 ms 69188 KB Output is correct
21 Correct 315 ms 69232 KB Output is correct
22 Correct 320 ms 69016 KB Output is correct

Subtask #6
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 523 ms 65044 KB Output is correct
2 Correct 311 ms 68804 KB Output is correct
3 Correct 275 ms 59896 KB Output is correct
4 Correct 261 ms 58792 KB Output is correct
5 Correct 266 ms 58444 KB Output is correct
6 Correct 269 ms 59704 KB Output is correct
7 Correct 256 ms 58064 KB Output is correct
8 Correct 284 ms 58588 KB Output is correct
9 Correct 249 ms 57556 KB Output is correct
10 Correct 333 ms 60600 KB Output is correct
11 Correct 257 ms 58192 KB Output is correct
12 Correct 634 ms 65572 KB Output is correct
13 Correct 280 ms 58492 KB Output is correct
14 Correct 248 ms 80948 KB Output is correct
15 Correct 181 ms 70724 KB Output is correct
16 Correct 499 ms 64740 KB Output is correct
17 Correct 566 ms 64756 KB Output is correct
18 Correct 494 ms 63044 KB Output is correct
19 Correct 310 ms 69076 KB Output is correct
20 Correct 302 ms 69188 KB Output is correct
21 Correct 315 ms 69232 KB Output is correct
22 Correct 320 ms 69016 KB Output is correct
23 Correct 699 ms 65992 KB Output is correct
24 Correct 358 ms 69156 KB Output is correct
25 Correct 414 ms 58936 KB Output is correct
26 Correct 366 ms 58548 KB Output is correct
27 Correct 341 ms 58224 KB Output is correct
28 Correct 434 ms 59972 KB Output is correct
29 Correct 408 ms 58660 KB Output is correct
30 Correct 368 ms 59232 KB Output is correct
31 Correct 399 ms 59844 KB Output is correct
32 Correct 395 ms 57724 KB Output is correct
33 Correct 472 ms 59196 KB Output is correct
34 Correct 728 ms 66176 KB Output is correct
35 Correct 418 ms 58484 KB Output is correct
36 Correct 282 ms 83656 KB Output is correct
37 Correct 315 ms 83684 KB Output is correct
38 Correct 711 ms 65568 KB Output is correct
39 Correct 691 ms 65188 KB Output is correct
40 Correct 813 ms 66264 KB Output is correct
41 Correct 366 ms 69324 KB Output is correct
42 Correct 363 ms 69100 KB Output is correct
43 Correct 357 ms 69060 KB Output is correct
44 Correct 358 ms 69132 KB Output is correct

Subtask #7
0 / 27.0

# 결과 실행 시간 메모리 Grader output
1 Correct 12 ms 21452 KB Output is correct
2 Correct 14 ms 21472 KB Output is correct
3 Correct 14 ms 21452 KB Output is correct
4 Correct 12 ms 21540 KB Output is correct
5 Correct 12 ms 21520 KB Output is correct
6 Correct 12 ms 21452 KB Output is correct
7 Correct 12 ms 21436 KB Output is correct
8 Correct 12 ms 21452 KB Output is correct
9 Correct 14 ms 21708 KB Output is correct
10 Correct 14 ms 21832 KB Output is correct
11 Correct 14 ms 21820 KB Output is correct
12 Correct 14 ms 21708 KB Output is correct
13 Correct 13 ms 21708 KB Output is correct
14 Correct 13 ms 21724 KB Output is correct
15 Correct 13 ms 21708 KB Output is correct
16 Correct 13 ms 21708 KB Output is correct
17 Correct 726 ms 70208 KB Output is correct
18 Correct 727 ms 69512 KB Output is correct
19 Correct 705 ms 69640 KB Output is correct
20 Correct 703 ms 69808 KB Output is correct
21 Correct 690 ms 70128 KB Output is correct
22 Correct 743 ms 71424 KB Output is correct
23 Correct 774 ms 70840 KB Output is correct
24 Correct 758 ms 71504 KB Output is correct
25 Correct 751 ms 71856 KB Output is correct
26 Correct 711 ms 70560 KB Output is correct
27 Correct 723 ms 68876 KB Output is correct
28 Correct 734 ms 70976 KB Output is correct
29 Correct 715 ms 70600 KB Output is correct
30 Correct 722 ms 71460 KB Output is correct
31 Correct 714 ms 70668 KB Output is correct
32 Correct 717 ms 70852 KB Output is correct
33 Correct 523 ms 65044 KB Output is correct
34 Correct 311 ms 68804 KB Output is correct
35 Correct 275 ms 59896 KB Output is correct
36 Correct 261 ms 58792 KB Output is correct
37 Correct 266 ms 58444 KB Output is correct
38 Correct 269 ms 59704 KB Output is correct
39 Correct 256 ms 58064 KB Output is correct
40 Correct 284 ms 58588 KB Output is correct
41 Correct 249 ms 57556 KB Output is correct
42 Correct 333 ms 60600 KB Output is correct
43 Correct 257 ms 58192 KB Output is correct
44 Correct 634 ms 65572 KB Output is correct
45 Correct 280 ms 58492 KB Output is correct
46 Correct 248 ms 80948 KB Output is correct
47 Correct 181 ms 70724 KB Output is correct
48 Correct 499 ms 64740 KB Output is correct
49 Correct 566 ms 64756 KB Output is correct
50 Correct 494 ms 63044 KB Output is correct
51 Correct 310 ms 69076 KB Output is correct
52 Correct 302 ms 69188 KB Output is correct
53 Correct 315 ms 69232 KB Output is correct
54 Correct 320 ms 69016 KB Output is correct
55 Correct 699 ms 65992 KB Output is correct
56 Correct 358 ms 69156 KB Output is correct
57 Correct 414 ms 58936 KB Output is correct
58 Correct 366 ms 58548 KB Output is correct
59 Correct 341 ms 58224 KB Output is correct
60 Correct 434 ms 59972 KB Output is correct
61 Correct 408 ms 58660 KB Output is correct
62 Correct 368 ms 59232 KB Output is correct
63 Correct 399 ms 59844 KB Output is correct
64 Correct 395 ms 57724 KB Output is correct
65 Correct 472 ms 59196 KB Output is correct
66 Correct 728 ms 66176 KB Output is correct
67 Correct 418 ms 58484 KB Output is correct
68 Correct 282 ms 83656 KB Output is correct
69 Correct 315 ms 83684 KB Output is correct
70 Correct 711 ms 65568 KB Output is correct
71 Correct 691 ms 65188 KB Output is correct
72 Correct 813 ms 66264 KB Output is correct
73 Correct 366 ms 69324 KB Output is correct
74 Correct 363 ms 69100 KB Output is correct
75 Correct 357 ms 69060 KB Output is correct
76 Correct 358 ms 69132 KB Output is correct
77 Correct 841 ms 66624 KB Output is correct
78 Correct 366 ms 69188 KB Output is correct
79 Correct 449 ms 59132 KB Output is correct
80 Correct 452 ms 58036 KB Output is correct
81 Correct 428 ms 59128 KB Output is correct
82 Correct 480 ms 58924 KB Output is correct
83 Correct 452 ms 58272 KB Output is correct
84 Correct 469 ms 58444 KB Output is correct
85 Correct 404 ms 59432 KB Output is correct
86 Correct 456 ms 59112 KB Output is correct
87 Correct 427 ms 58572 KB Output is correct
88 Correct 635 ms 65636 KB Output is correct
89 Correct 437 ms 58876 KB Output is correct
90 Correct 324 ms 83628 KB Output is correct
91 Correct 360 ms 83768 KB Output is correct
92 Runtime error 786 ms 134592 KB Execution killed with signal 6
93 Halted 0 ms 0 KB -