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Submission #890055

# Submission time Handle Problem Language Result Execution time Memory
890055 2023-12-20T12:38:47 Z Alfraganus Evacuation plan (IZhO18_plan) C++17
100 / 100
 537 ms 38224 KB 
#include <bits/stdc++.h>
#include <vector>
#include <set>
using namespace std;

vector<vector<pair<int, int> > > g;
using ll = long long;
vector<int> rt;
vector<set<int> > lst;
int root(int u){
    return u == rt[u] ? u : rt[u] = root(rt[u]);
}

int main(){
  ios::sync_with_stdio(0);
  cin.tie(0);
  cout.tie(0);
    int n, m;
    cin >> n >> m;
    vector<pair<int, pair<int, int> > > ways;
    g.resize(n+1);
    rt.resize(n+1);
    lst.resize(n+1);
    for(int i = 1; i <= n; i ++) rt[i] = i;
    ways.resize(m);
    for(int i = 0, u, v, w; i < m; i ++){
        cin >> u >> v >> w;
        g[u].emplace_back(v, w);
        g[v].emplace_back(u, w);
        ways[i] = {w, {u, v}};
    }
    vector<ll> h(n+1, LLONG_MAX);
    set<pair<int, int> > q;
    int k, x;
    for(cin >> k; k > 0; k --){
        cin >> x;
        h[x] = 0;
        q.emplace(0, x);
    }
    while(!q.empty()){
        auto [w, u] = *q.begin();
        q.erase(q.begin());
        for(auto v:g[u])
            if(h[v.first] > h[u] + v.second){
                q.erase({h[v.first], v.first});
                h[v.first] = h[u] + v.second;
                q.emplace(h[v.first], v.first);
            }
    }
    for(int i = 0; i < m; i ++)
        ways[i].first = min(h[ways[i].second.first], h[ways[i].second.second]);
    sort(ways.rbegin(), ways.rend());
    
    int qu;
    cin >> qu;
    vector<ll> res(qu);
    for(int i = 0, u, v; i < qu; i ++){
        cin >> u >> v;
        lst[u].insert(i);
        lst[v].insert(i);
    }
    
    for(auto [w,y]: ways){
        auto [u, v] = y;
        u = root(u);
        v = root(v);
        if(u == v) continue;
        if(lst[u].size() > lst[v].size()) swap(u, v);
        for(int q:lst[u]){
            if(lst[v].count(q)){
                res[q] = w;
                lst[v].erase(q);
            }
            else
                lst[v].insert(q);
        }
        lst[u].clear();
        rt[u] = v;
    }
    for(ll x:res) cout << x << '\n';
    return 0;
}

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 628 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 0 ms 388 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 600 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 628 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 0 ms 388 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 158 ms 22096 KB Output is correct
17 Correct 482 ms 37804 KB Output is correct
18 Correct 28 ms 3932 KB Output is correct
19 Correct 148 ms 24196 KB Output is correct
20 Correct 496 ms 37816 KB Output is correct
21 Correct 243 ms 27480 KB Output is correct
22 Correct 100 ms 23852 KB Output is correct
23 Correct 457 ms 37824 KB Output is correct
24 Correct 451 ms 37812 KB Output is correct
25 Correct 453 ms 37712 KB Output is correct
26 Correct 159 ms 24148 KB Output is correct
27 Correct 167 ms 24192 KB Output is correct
28 Correct 164 ms 23940 KB Output is correct
29 Correct 159 ms 24332 KB Output is correct
30 Correct 146 ms 24260 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 344 KB Output is correct
2 Correct 0 ms 344 KB Output is correct
3 Correct 0 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 0 ms 348 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 0 ms 348 KB Output is correct
9 Correct 1 ms 504 KB Output is correct
10 Correct 1 ms 344 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 137 ms 19240 KB Output is correct
2 Correct 350 ms 30288 KB Output is correct
3 Correct 348 ms 30676 KB Output is correct
4 Correct 44 ms 12892 KB Output is correct
5 Correct 316 ms 30552 KB Output is correct
6 Correct 380 ms 30480 KB Output is correct
7 Correct 364 ms 30712 KB Output is correct
8 Correct 337 ms 30540 KB Output is correct
9 Correct 340 ms 30524 KB Output is correct
10 Correct 311 ms 30428 KB Output is correct
11 Correct 314 ms 30444 KB Output is correct
12 Correct 340 ms 30456 KB Output is correct
13 Correct 330 ms 30288 KB Output is correct
14 Correct 328 ms 30588 KB Output is correct
15 Correct 389 ms 30720 KB Output is correct
16 Correct 326 ms 30540 KB Output is correct
17 Correct 320 ms 30536 KB Output is correct
18 Correct 377 ms 30760 KB Output is correct
19 Correct 40 ms 12888 KB Output is correct
20 Correct 337 ms 30548 KB Output is correct
21 Correct 310 ms 31304 KB Output is correct
22 Correct 87 ms 18372 KB Output is correct
23 Correct 56 ms 13344 KB Output is correct
24 Correct 69 ms 18408 KB Output is correct
25 Correct 71 ms 18372 KB Output is correct
26 Correct 61 ms 13776 KB Output is correct
27 Correct 43 ms 12788 KB Output is correct
28 Correct 72 ms 18412 KB Output is correct
29 Correct 46 ms 12880 KB Output is correct
30 Correct 84 ms 18616 KB Output is correct
31 Correct 51 ms 12876 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 348 KB Output is correct
2 Correct 1 ms 604 KB Output is correct
3 Correct 1 ms 604 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 1 ms 628 KB Output is correct
6 Correct 2 ms 604 KB Output is correct
7 Correct 0 ms 388 KB Output is correct
8 Correct 1 ms 348 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 600 KB Output is correct
11 Correct 1 ms 604 KB Output is correct
12 Correct 1 ms 604 KB Output is correct
13 Correct 1 ms 600 KB Output is correct
14 Correct 1 ms 604 KB Output is correct
15 Correct 1 ms 600 KB Output is correct
16 Correct 158 ms 22096 KB Output is correct
17 Correct 482 ms 37804 KB Output is correct
18 Correct 28 ms 3932 KB Output is correct
19 Correct 148 ms 24196 KB Output is correct
20 Correct 496 ms 37816 KB Output is correct
21 Correct 243 ms 27480 KB Output is correct
22 Correct 100 ms 23852 KB Output is correct
23 Correct 457 ms 37824 KB Output is correct
24 Correct 451 ms 37812 KB Output is correct
25 Correct 453 ms 37712 KB Output is correct
26 Correct 159 ms 24148 KB Output is correct
27 Correct 167 ms 24192 KB Output is correct
28 Correct 164 ms 23940 KB Output is correct
29 Correct 159 ms 24332 KB Output is correct
30 Correct 146 ms 24260 KB Output is correct
31 Correct 0 ms 344 KB Output is correct
32 Correct 0 ms 344 KB Output is correct
33 Correct 0 ms 348 KB Output is correct
34 Correct 0 ms 348 KB Output is correct
35 Correct 0 ms 348 KB Output is correct
36 Correct 0 ms 348 KB Output is correct
37 Correct 0 ms 348 KB Output is correct
38 Correct 0 ms 348 KB Output is correct
39 Correct 1 ms 504 KB Output is correct
40 Correct 1 ms 344 KB Output is correct
41 Correct 137 ms 19240 KB Output is correct
42 Correct 350 ms 30288 KB Output is correct
43 Correct 348 ms 30676 KB Output is correct
44 Correct 44 ms 12892 KB Output is correct
45 Correct 316 ms 30552 KB Output is correct
46 Correct 380 ms 30480 KB Output is correct
47 Correct 364 ms 30712 KB Output is correct
48 Correct 337 ms 30540 KB Output is correct
49 Correct 340 ms 30524 KB Output is correct
50 Correct 311 ms 30428 KB Output is correct
51 Correct 314 ms 30444 KB Output is correct
52 Correct 340 ms 30456 KB Output is correct
53 Correct 330 ms 30288 KB Output is correct
54 Correct 328 ms 30588 KB Output is correct
55 Correct 389 ms 30720 KB Output is correct
56 Correct 326 ms 30540 KB Output is correct
57 Correct 320 ms 30536 KB Output is correct
58 Correct 377 ms 30760 KB Output is correct
59 Correct 40 ms 12888 KB Output is correct
60 Correct 337 ms 30548 KB Output is correct
61 Correct 310 ms 31304 KB Output is correct
62 Correct 87 ms 18372 KB Output is correct
63 Correct 56 ms 13344 KB Output is correct
64 Correct 69 ms 18408 KB Output is correct
65 Correct 71 ms 18372 KB Output is correct
66 Correct 61 ms 13776 KB Output is correct
67 Correct 43 ms 12788 KB Output is correct
68 Correct 72 ms 18412 KB Output is correct
69 Correct 46 ms 12880 KB Output is correct
70 Correct 84 ms 18616 KB Output is correct
71 Correct 51 ms 12876 KB Output is correct
72 Correct 274 ms 28104 KB Output is correct
73 Correct 490 ms 37852 KB Output is correct
74 Correct 478 ms 37852 KB Output is correct
75 Correct 468 ms 37788 KB Output is correct
76 Correct 478 ms 37804 KB Output is correct
77 Correct 455 ms 37972 KB Output is correct
78 Correct 442 ms 38224 KB Output is correct
79 Correct 479 ms 37864 KB Output is correct
80 Correct 480 ms 37972 KB Output is correct
81 Correct 465 ms 37996 KB Output is correct
82 Correct 446 ms 37968 KB Output is correct
83 Correct 433 ms 37944 KB Output is correct
84 Correct 458 ms 38000 KB Output is correct
85 Correct 537 ms 37856 KB Output is correct
86 Correct 461 ms 37984 KB Output is correct
87 Correct 446 ms 37972 KB Output is correct
88 Correct 437 ms 37972 KB Output is correct
89 Correct 138 ms 23892 KB Output is correct
90 Correct 517 ms 37972 KB Output is correct
91 Correct 457 ms 37712 KB Output is correct
92 Correct 179 ms 24004 KB Output is correct
93 Correct 238 ms 24656 KB Output is correct
94 Correct 183 ms 23936 KB Output is correct
95 Correct 175 ms 24196 KB Output is correct
96 Correct 250 ms 24036 KB Output is correct
97 Correct 153 ms 23480 KB Output is correct
98 Correct 185 ms 24120 KB Output is correct
99 Correct 153 ms 23484 KB Output is correct
100 Correct 181 ms 24356 KB Output is correct