oj.uz

Submission #880297

# Submission time Handle Problem Language Result Execution time Memory
880297 2023-11-29T06:30:42 Z dimashhh Evacuation plan (IZhO18_plan) C++17
100 / 100
 610 ms 48816 KB 
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N = 1e5 + 12;
#define int long long
set<int> qr[N];
int n,m,d[N],p[N],res[N];
vector<pair<int,int>> g[N];
void dijkstra(){
    int k;
    cin >> k;
    for(int i = 1;i <= n;i++){
        d[i] = 1e18;
    }
    set<pair<int,int>> st;
    for(int i = 1;i <= k;i++){
        int x;
        cin >> x;
        d[x] = 0;
        st.insert({0,x});
    }
    while(!st.empty()){
        int v = (*st.begin()).second;
        st.erase({d[v],v});
        for(auto [to,w]:g[v]){
            if(d[to] > d[v] + w){
                st.erase({d[to],to});
                d[to] = d[v] + w;
                st.insert({d[to],to});
            }
        }
    }
}
int get(int v){
    if(p[v] == v) return v;
    return p[v] = get(p[v]);
}
int cur = 0;
void merge(int v,int u){
    v = get(v);
    u = get(u);
    if(v == u) return;
    p[u] = v;
    if(qr[v].size() < qr[u].size()){
        qr[v].swap(qr[u]);
    }
    for(auto i:qr[u]){
        if(qr[v].find(i) == qr[v].end()){
            qr[v].insert(i);
        }else{
            res[i] = cur;
            qr[v].erase(i);
        }
    }
    qr[u].clear();
}
void test(){
    cin >> n >> m;
    for(int i = 1;i <= m;i++){
        int x,y,w;
        cin >> x >> y >> w;
        g[x].push_back({y,w});
        g[y].push_back({x,w});
    }
    dijkstra();
    int q;
    cin >> q;
    for(int i = 1;i <= q;i++){
        int s,t;
        cin >> s >> t;
        qr[s].insert(i);
        qr[t].insert(i);
    }
    vector<int> b(n);
    iota(b.begin(),b.end(),1);
    sort(b.begin(),b.end(),[&](int x,int y){
        return d[x] > d[y];
    });
    for(int i = 1;i <= n;i++){
        p[i] = i;
    }
    for(auto i:b){
        cur = d[i];
        for(auto [to,w]:g[i]){
            if(d[to] >= d[i]){
                merge(i,to);
            }
        }
    }
    for(int i = 1;i <= q;i++){
        cout << res[i] << '\n';
    }
}
main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    test();
}

Compilation message

plan.cpp:94:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
   94 | main(){
      | ^~~~

Subtask #1
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 3 ms 10076 KB Output is correct
3 Correct 3 ms 10076 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 3 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 2 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10328 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 3 ms 9820 KB Output is correct

Subtask #2
13.0 / 13.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 3 ms 10076 KB Output is correct
3 Correct 3 ms 10076 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 3 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 2 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10328 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 3 ms 9820 KB Output is correct
16 Correct 178 ms 27148 KB Output is correct
17 Correct 534 ms 48704 KB Output is correct
18 Correct 34 ms 13656 KB Output is correct
19 Correct 199 ms 26844 KB Output is correct
20 Correct 532 ms 48752 KB Output is correct
21 Correct 313 ms 32852 KB Output is correct
22 Correct 111 ms 27180 KB Output is correct
23 Correct 538 ms 48468 KB Output is correct
24 Correct 568 ms 48464 KB Output is correct
25 Correct 529 ms 48324 KB Output is correct
26 Correct 168 ms 26564 KB Output is correct
27 Correct 209 ms 26784 KB Output is correct
28 Correct 169 ms 26556 KB Output is correct
29 Correct 177 ms 26556 KB Output is correct
30 Correct 173 ms 26816 KB Output is correct

Subtask #3
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 3 ms 9816 KB Output is correct
2 Correct 3 ms 9820 KB Output is correct
3 Correct 2 ms 9820 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 2 ms 9820 KB Output is correct
6 Correct 2 ms 9820 KB Output is correct
7 Correct 2 ms 9820 KB Output is correct
8 Correct 2 ms 9848 KB Output is correct
9 Correct 2 ms 9820 KB Output is correct
10 Correct 2 ms 9820 KB Output is correct

Subtask #4
19.0 / 19.0

# Verdict Execution time Memory Grader output
1 Correct 165 ms 24468 KB Output is correct
2 Correct 399 ms 41988 KB Output is correct
3 Correct 399 ms 41812 KB Output is correct
4 Correct 64 ms 16276 KB Output is correct
5 Correct 384 ms 42816 KB Output is correct
6 Correct 410 ms 42344 KB Output is correct
7 Correct 363 ms 41808 KB Output is correct
8 Correct 404 ms 41996 KB Output is correct
9 Correct 445 ms 42064 KB Output is correct
10 Correct 351 ms 42004 KB Output is correct
11 Correct 379 ms 42836 KB Output is correct
12 Correct 388 ms 41812 KB Output is correct
13 Correct 361 ms 42704 KB Output is correct
14 Correct 389 ms 41808 KB Output is correct
15 Correct 357 ms 42064 KB Output is correct
16 Correct 388 ms 42832 KB Output is correct
17 Correct 365 ms 42172 KB Output is correct
18 Correct 414 ms 42832 KB Output is correct
19 Correct 48 ms 16188 KB Output is correct
20 Correct 367 ms 42592 KB Output is correct
21 Correct 294 ms 43084 KB Output is correct
22 Correct 98 ms 21604 KB Output is correct
23 Correct 77 ms 16724 KB Output is correct
24 Correct 90 ms 21740 KB Output is correct
25 Correct 81 ms 21576 KB Output is correct
26 Correct 74 ms 17020 KB Output is correct
27 Correct 49 ms 16380 KB Output is correct
28 Correct 80 ms 21600 KB Output is correct
29 Correct 67 ms 16212 KB Output is correct
30 Correct 84 ms 21568 KB Output is correct
31 Correct 49 ms 16332 KB Output is correct

Subtask #5
46.0 / 46.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 9816 KB Output is correct
2 Correct 3 ms 10076 KB Output is correct
3 Correct 3 ms 10076 KB Output is correct
4 Correct 2 ms 9820 KB Output is correct
5 Correct 3 ms 9820 KB Output is correct
6 Correct 3 ms 9820 KB Output is correct
7 Correct 2 ms 9820 KB Output is correct
8 Correct 2 ms 9820 KB Output is correct
9 Correct 3 ms 9820 KB Output is correct
10 Correct 4 ms 9820 KB Output is correct
11 Correct 4 ms 9816 KB Output is correct
12 Correct 3 ms 10328 KB Output is correct
13 Correct 4 ms 9820 KB Output is correct
14 Correct 4 ms 9820 KB Output is correct
15 Correct 3 ms 9820 KB Output is correct
16 Correct 178 ms 27148 KB Output is correct
17 Correct 534 ms 48704 KB Output is correct
18 Correct 34 ms 13656 KB Output is correct
19 Correct 199 ms 26844 KB Output is correct
20 Correct 532 ms 48752 KB Output is correct
21 Correct 313 ms 32852 KB Output is correct
22 Correct 111 ms 27180 KB Output is correct
23 Correct 538 ms 48468 KB Output is correct
24 Correct 568 ms 48464 KB Output is correct
25 Correct 529 ms 48324 KB Output is correct
26 Correct 168 ms 26564 KB Output is correct
27 Correct 209 ms 26784 KB Output is correct
28 Correct 169 ms 26556 KB Output is correct
29 Correct 177 ms 26556 KB Output is correct
30 Correct 173 ms 26816 KB Output is correct
31 Correct 3 ms 9816 KB Output is correct
32 Correct 3 ms 9820 KB Output is correct
33 Correct 2 ms 9820 KB Output is correct
34 Correct 2 ms 9820 KB Output is correct
35 Correct 2 ms 9820 KB Output is correct
36 Correct 2 ms 9820 KB Output is correct
37 Correct 2 ms 9820 KB Output is correct
38 Correct 2 ms 9848 KB Output is correct
39 Correct 2 ms 9820 KB Output is correct
40 Correct 2 ms 9820 KB Output is correct
41 Correct 165 ms 24468 KB Output is correct
42 Correct 399 ms 41988 KB Output is correct
43 Correct 399 ms 41812 KB Output is correct
44 Correct 64 ms 16276 KB Output is correct
45 Correct 384 ms 42816 KB Output is correct
46 Correct 410 ms 42344 KB Output is correct
47 Correct 363 ms 41808 KB Output is correct
48 Correct 404 ms 41996 KB Output is correct
49 Correct 445 ms 42064 KB Output is correct
50 Correct 351 ms 42004 KB Output is correct
51 Correct 379 ms 42836 KB Output is correct
52 Correct 388 ms 41812 KB Output is correct
53 Correct 361 ms 42704 KB Output is correct
54 Correct 389 ms 41808 KB Output is correct
55 Correct 357 ms 42064 KB Output is correct
56 Correct 388 ms 42832 KB Output is correct
57 Correct 365 ms 42172 KB Output is correct
58 Correct 414 ms 42832 KB Output is correct
59 Correct 48 ms 16188 KB Output is correct
60 Correct 367 ms 42592 KB Output is correct
61 Correct 294 ms 43084 KB Output is correct
62 Correct 98 ms 21604 KB Output is correct
63 Correct 77 ms 16724 KB Output is correct
64 Correct 90 ms 21740 KB Output is correct
65 Correct 81 ms 21576 KB Output is correct
66 Correct 74 ms 17020 KB Output is correct
67 Correct 49 ms 16380 KB Output is correct
68 Correct 80 ms 21600 KB Output is correct
69 Correct 67 ms 16212 KB Output is correct
70 Correct 84 ms 21568 KB Output is correct
71 Correct 49 ms 16332 KB Output is correct
72 Correct 375 ms 33160 KB Output is correct
73 Correct 547 ms 48720 KB Output is correct
74 Correct 574 ms 48720 KB Output is correct
75 Correct 534 ms 48596 KB Output is correct
76 Correct 585 ms 48572 KB Output is correct
77 Correct 556 ms 48816 KB Output is correct
78 Correct 589 ms 48532 KB Output is correct
79 Correct 559 ms 48596 KB Output is correct
80 Correct 610 ms 48444 KB Output is correct
81 Correct 565 ms 48704 KB Output is correct
82 Correct 561 ms 48648 KB Output is correct
83 Correct 590 ms 48596 KB Output is correct
84 Correct 589 ms 48460 KB Output is correct
85 Correct 540 ms 43936 KB Output is correct
86 Correct 522 ms 43856 KB Output is correct
87 Correct 552 ms 43840 KB Output is correct
88 Correct 577 ms 43860 KB Output is correct
89 Correct 174 ms 25428 KB Output is correct
90 Correct 570 ms 43600 KB Output is correct
91 Correct 461 ms 43544 KB Output is correct
92 Correct 257 ms 25020 KB Output is correct
93 Correct 277 ms 26052 KB Output is correct
94 Correct 231 ms 24892 KB Output is correct
95 Correct 249 ms 24972 KB Output is correct
96 Correct 354 ms 25120 KB Output is correct
97 Correct 193 ms 25220 KB Output is correct
98 Correct 260 ms 24764 KB Output is correct
99 Correct 271 ms 25168 KB Output is correct
100 Correct 294 ms 24896 KB Output is correct