oj.uz

Submission #737576

# Submission time Handle Problem Language Result Execution time Memory
737576 2023-05-07T11:18:17 Z Ronin13 Relay Marathon (NOI20_relaymarathon) C++14
17 / 100
 6000 ms 189548 KB 
#include <bits/stdc++.h>
#define ll long long
#define ull unsigned ll
#define f first
#define s second
#define pii pair<int,int>
#define pll pair<ll,ll>
#define pb push_back
#define epb emplace_back
using namespace std;
const int nmax = 300001;
vector <ll> bit(nmax);

vector <vector <pll> > dp(nmax);
map <pii, bool> used;
vector <vector <pll> > g(nmax);
priority_queue <pair<ll, pii> > q;
void upd(int u, int x, ll len){
    bool tt;
    tt = false;
    for(int j = 0; j < 5; j++){
        if(dp[u][j].s == x){
            tt = true;
            if(len > dp[u][j].f) continue;
            dp[u][j].f = len;
            q.push({-dp[u][j].f, {u, dp[u][j].s}});
        }
    }
    if(!tt){
        if(len < dp[u].back().f)
        dp[u].pb({len, x}), q.push({-len, {u, x}});
    }
    sort(dp[u].begin(), dp[u].end());
    if(dp[u].size() > 5)
        dp[u].pop_back();

}

int main(){
    ios_base::sync_with_stdio(false); cin.tie(0);
    int n, k, m; cin >> n >> m >> k;
    for(int i = 1; i <= m; i++){
        int u, v; cin >> u >> v;
        ll w; cin >> w;
        g[u].pb({v, w});
        g[v].pb({u, w});
    }

    vector <int> sources;
    for(int i = 1 ;i <= k; i++){
        int x; cin >> x;
        sources.pb(x);
    }
   // cout << 1;
    for(int i = 1; i <= n; i++){
        for(int j = 0; j < 5; j++)
        dp[i].pb({1e18, 0});
    }
   // cout << 1;
    for(int to : sources){
        dp[to][0] = {0, to};
        q.push({0, {to, to}});
    }
    //cout << 1;
    while(!q.empty()){
        int v = q.top().s.f, y = q.top().s.s;
        ll val = -q.top().f;
        q.pop();
        if(used[{v, y}]) continue;
        used[{v, y}] = true;
        for(auto ed : g[v]){
            int to = ed.f;
            ll len = ed.s + val;
            upd(to, y, len);
        }
    }
    vector <pair<ll, pii> > vec;
    for(int to : sources){
        for(int j = 0; j < 5; j++){
            if(dp[to][j].f != 1e18)
            vec.pb({dp[to][j].f, {to, dp[to][j].s}});
        }
    }
    sort(vec.begin(), vec.end());
    int cnt[n + 1];
    fill(cnt, cnt + n + 1, 0);
    set <pii> st;
    vector <pair<ll, pii> > cand;
    for(auto to : vec){
        if(cand.size() > 30) break;
        if(to.s.f == to.s.s) continue;
        if(st.find({to.s.f, to.s.s}) != st.end()) continue;
        st.insert({to.s.f, to.s.s});
        if(cnt[to.s.f] < 5 && cnt[to.s.s] < 5){
            cand.pb(to);
            cnt[to.s.f]++;
            cnt[to.s.s]++;
        }
    }
   // cout << 1;
    ll ans = 1e18;
    for(int i = 0; i < cand.size(); i++){
        for(int j =0; j < cand.size(); j++){
            set <int> st;
            st.insert(cand[i].s.f);
            st.insert(cand[i].s.s);
            st.insert(cand[j].s.f);
            st.insert(cand[j].s.s);
            if(st.size() == 4){
                ans = min(ans, cand[i].f + cand[j].f);
            }
        }
    }
    cout << ans;
    return 0;
}

Compilation message

RelayMarathon.cpp: In function 'int main()':
RelayMarathon.cpp:102:22: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<int, int> >, std::allocator<std::pair<long long int, std::pair<int, int> > > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  102 |     for(int i = 0; i < cand.size(); i++){
      |                    ~~^~~~~~~~~~~~~
RelayMarathon.cpp:103:25: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<std::pair<long long int, std::pair<int, int> >, std::allocator<std::pair<long long int, std::pair<int, int> > > >::size_type' {aka 'long unsigned int'} [-Wsign-compare]
  103 |         for(int j =0; j < cand.size(); j++){
      |                       ~~^~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 10 ms 16852 KB Output is correct
3 Correct 10 ms 16724 KB Output is correct
4 Correct 10 ms 16732 KB Output is correct
5 Correct 9 ms 16724 KB Output is correct
6 Correct 8 ms 16740 KB Output is correct
7 Correct 10 ms 16804 KB Output is correct
8 Correct 12 ms 16876 KB Output is correct
9 Correct 11 ms 16724 KB Output is correct
10 Correct 9 ms 16764 KB Output is correct
11 Correct 9 ms 16768 KB Output is correct
12 Correct 8 ms 16724 KB Output is correct
13 Correct 9 ms 16852 KB Output is correct
14 Correct 10 ms 16860 KB Output is correct
15 Correct 11 ms 16836 KB Output is correct
16 Correct 8 ms 16724 KB Output is correct
17 Correct 12 ms 16852 KB Output is correct
18 Correct 8 ms 16784 KB Output is correct
19 Correct 10 ms 16852 KB Output is correct
20 Correct 10 ms 16812 KB Output is correct
21 Correct 12 ms 16852 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 11 ms 16852 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 8 ms 16724 KB Output is correct
26 Correct 8 ms 16724 KB Output is correct
27 Correct 8 ms 16672 KB Output is correct
28 Correct 11 ms 16876 KB Output is correct
29 Correct 9 ms 16852 KB Output is correct
30 Correct 10 ms 16852 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 10 ms 16852 KB Output is correct
3 Correct 10 ms 16724 KB Output is correct
4 Correct 10 ms 16732 KB Output is correct
5 Correct 9 ms 16724 KB Output is correct
6 Correct 8 ms 16740 KB Output is correct
7 Correct 10 ms 16804 KB Output is correct
8 Correct 12 ms 16876 KB Output is correct
9 Correct 11 ms 16724 KB Output is correct
10 Correct 9 ms 16764 KB Output is correct
11 Correct 9 ms 16768 KB Output is correct
12 Correct 8 ms 16724 KB Output is correct
13 Correct 9 ms 16852 KB Output is correct
14 Correct 10 ms 16860 KB Output is correct
15 Correct 11 ms 16836 KB Output is correct
16 Correct 8 ms 16724 KB Output is correct
17 Correct 12 ms 16852 KB Output is correct
18 Correct 8 ms 16784 KB Output is correct
19 Correct 10 ms 16852 KB Output is correct
20 Correct 10 ms 16812 KB Output is correct
21 Correct 12 ms 16852 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 11 ms 16852 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 8 ms 16724 KB Output is correct
26 Correct 8 ms 16724 KB Output is correct
27 Correct 8 ms 16672 KB Output is correct
28 Correct 11 ms 16876 KB Output is correct
29 Correct 9 ms 16852 KB Output is correct
30 Correct 10 ms 16852 KB Output is correct
31 Correct 9 ms 16888 KB Output is correct
32 Correct 11 ms 16980 KB Output is correct
33 Correct 10 ms 16980 KB Output is correct
34 Correct 9 ms 16852 KB Output is correct
35 Correct 8 ms 16724 KB Output is correct
36 Correct 16 ms 17492 KB Output is correct
37 Correct 19 ms 17720 KB Output is correct
38 Correct 11 ms 16980 KB Output is correct
39 Correct 189 ms 21656 KB Output is correct
40 Correct 39 ms 18444 KB Output is correct
41 Correct 11 ms 16980 KB Output is correct
42 Correct 42 ms 18516 KB Output is correct
43 Correct 14 ms 17364 KB Output is correct
44 Correct 11 ms 17052 KB Output is correct
45 Correct 9 ms 16852 KB Output is correct
46 Correct 245 ms 21848 KB Output is correct
47 Correct 29 ms 18016 KB Output is correct
48 Correct 186 ms 21668 KB Output is correct
49 Correct 184 ms 21832 KB Output is correct
50 Correct 12 ms 17056 KB Output is correct
51 Correct 11 ms 17108 KB Output is correct
52 Correct 10 ms 16980 KB Output is correct
53 Correct 93 ms 19636 KB Output is correct
54 Correct 190 ms 21664 KB Output is correct
55 Correct 10 ms 16980 KB Output is correct
56 Correct 10 ms 16852 KB Output is correct
57 Correct 10 ms 16980 KB Output is correct
58 Correct 285 ms 22008 KB Output is correct
59 Correct 9 ms 16724 KB Output is correct
60 Correct 13 ms 17236 KB Output is correct

Subtask #3
0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 509 ms 51572 KB Output is correct
2 Correct 31 ms 31592 KB Output is correct
3 Execution timed out 6045 ms 189548 KB Time limit exceeded
4 Halted 0 ms 0 KB -

Subtask #4
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 10 ms 16724 KB Output is correct
2 Correct 10 ms 16852 KB Output is correct
3 Correct 10 ms 16724 KB Output is correct
4 Correct 10 ms 16732 KB Output is correct
5 Correct 9 ms 16724 KB Output is correct
6 Correct 8 ms 16740 KB Output is correct
7 Correct 10 ms 16804 KB Output is correct
8 Correct 12 ms 16876 KB Output is correct
9 Correct 11 ms 16724 KB Output is correct
10 Correct 9 ms 16764 KB Output is correct
11 Correct 9 ms 16768 KB Output is correct
12 Correct 8 ms 16724 KB Output is correct
13 Correct 9 ms 16852 KB Output is correct
14 Correct 10 ms 16860 KB Output is correct
15 Correct 11 ms 16836 KB Output is correct
16 Correct 8 ms 16724 KB Output is correct
17 Correct 12 ms 16852 KB Output is correct
18 Correct 8 ms 16784 KB Output is correct
19 Correct 10 ms 16852 KB Output is correct
20 Correct 10 ms 16812 KB Output is correct
21 Correct 12 ms 16852 KB Output is correct
22 Correct 8 ms 16724 KB Output is correct
23 Correct 11 ms 16852 KB Output is correct
24 Correct 8 ms 16724 KB Output is correct
25 Correct 8 ms 16724 KB Output is correct
26 Correct 8 ms 16724 KB Output is correct
27 Correct 8 ms 16672 KB Output is correct
28 Correct 11 ms 16876 KB Output is correct
29 Correct 9 ms 16852 KB Output is correct
30 Correct 10 ms 16852 KB Output is correct
31 Correct 9 ms 16888 KB Output is correct
32 Correct 11 ms 16980 KB Output is correct
33 Correct 10 ms 16980 KB Output is correct
34 Correct 9 ms 16852 KB Output is correct
35 Correct 8 ms 16724 KB Output is correct
36 Correct 16 ms 17492 KB Output is correct
37 Correct 19 ms 17720 KB Output is correct
38 Correct 11 ms 16980 KB Output is correct
39 Correct 189 ms 21656 KB Output is correct
40 Correct 39 ms 18444 KB Output is correct
41 Correct 11 ms 16980 KB Output is correct
42 Correct 42 ms 18516 KB Output is correct
43 Correct 14 ms 17364 KB Output is correct
44 Correct 11 ms 17052 KB Output is correct
45 Correct 9 ms 16852 KB Output is correct
46 Correct 245 ms 21848 KB Output is correct
47 Correct 29 ms 18016 KB Output is correct
48 Correct 186 ms 21668 KB Output is correct
49 Correct 184 ms 21832 KB Output is correct
50 Correct 12 ms 17056 KB Output is correct
51 Correct 11 ms 17108 KB Output is correct
52 Correct 10 ms 16980 KB Output is correct
53 Correct 93 ms 19636 KB Output is correct
54 Correct 190 ms 21664 KB Output is correct
55 Correct 10 ms 16980 KB Output is correct
56 Correct 10 ms 16852 KB Output is correct
57 Correct 10 ms 16980 KB Output is correct
58 Correct 285 ms 22008 KB Output is correct
59 Correct 9 ms 16724 KB Output is correct
60 Correct 13 ms 17236 KB Output is correct
61 Correct 509 ms 51572 KB Output is correct
62 Correct 31 ms 31592 KB Output is correct
63 Execution timed out 6045 ms 189548 KB Time limit exceeded
64 Halted 0 ms 0 KB -