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Submission #1111141

# Submission time Handle Problem Language Result Execution time Memory
1111141 2024-11-11T15:17:35 Z cpptowin Relay Marathon (NOI20_relaymarathon) C++17
42 / 100
 1418 ms 159656 KB 
#include <bits/stdc++.h>
#define fo(i, d, c) for (int i = d; i <= c; i++)
#define fod(i, c, d) for (int i = c; i >= d; i--)
#define maxn 100010
#define N 1010
#define fi first
#define se second
#define pb emplace_back
#define en cout << "\n";
#define int long long
#define inf (int)1e18
#define bitcount(x) __builtin_popcountll(x)
#define pii pair<int, int>
#define vii vector<pii>
#define lb(x) x & -x
#define bit(i, j) ((i >> j) & 1)
#define offbit(i, j) (i ^ (1LL << j))
#define onbit(i, j) (i | (1LL << j))
#define vi vector<int>
#define all(x) x.begin(), x.end()
#define ss(x) (int)x.size()
#define UNIQUE(v) v.erase(unique(all(v)),v.end())
template <typename T1, typename T2>
bool minimize(T1 &a, T2 b)
{
    if (a > b)
    {
        a = b;
        return true;
    }
    return false;
}
template <typename T1, typename T2>
bool maximize(T1 &a, T2 b)
{
    if (a < b)
    {
        a = b;
        return true;
    }
    return false;
}
using namespace std;
const int nsqrt = 450;
const int mod = 1e9 + 7;
void add(int &x, int k)
{
    x += k;
    x %= mod;
    if(x < 0) x += mod;
}
void del(int &x, int k)
{
    x -= k;
    x %= mod;
    if(x < 0) x += mod;
}
int n,m,k;
vii ke[maxn];
vi special;
int d[maxn];
int sources[maxn];
pii dist[maxn];
int mindist;
pii node;
void dijkstra(vi inp)
{
    mindist = inf;
    fo(i,1,n) d[i] = inf;
    priority_queue<pii,vii,greater<pii>> q;
    for(int it : inp)
    {
        d[it] = 0;
        sources[it] = it;
        q.push({0,it});
    }
    while(ss(q))
    {
        auto [du,u] = q.top();
        q.pop();
        if(du != d[u]) continue;
        for(auto [v,w] : ke[u])
        {
            if(minimize(d[v],du + w))
            {
                q.push({d[v],v});
                sources[v] = sources[u];
            }
        }
    }
    fo(u,1,n) for(auto [v,w] : ke[u]) if(sources[u] != sources[v])
        {
            if(minimize(mindist,d[u] + w + d[v])) node = {sources[u],sources[v]};
        }
}
pii min1,min2;
void dij(int inp)
{
    min1.fi = inf;
    min2.fi = inf;
    fo(i,1,n) d[i] = inf;
    d[inp] = 0;
    priority_queue<pii,vii,greater<pii>> q;
    q.push({0,inp});
    while(q.size())
    {
        auto [du,u] = q.top();
        q.pop();
        if(d[u] != du) continue;
        for(auto [v,w] : ke[u])
        {
            if(d[v] > d[u] + w)
            {
                d[v] = d[u] + w;
                q.push({d[v],v});
            }
        }
    }
    for(int it : special) if(it != inp)
        {
            if(min1.fi > d[it])
            {
                min2 = min1;
                min1 = {d[it],it};
            }
        }
}
main()
{
#define name "TASK"
    if (fopen(name ".inp", "r"))
    {
        freopen(name ".inp", "r", stdin);
        freopen(name ".out", "w", stdout);
    }
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    cin >> n >> m >> k;
    special.resize(k);
    fo(i,1,m)
    {
        int u,v,w;
        cin >> u >> v >> w;
        ke[u].pb(v,w);
        ke[v].pb(u,w);
    }
    int res = inf;
    for(int &it : special) cin >> it;
    dijkstra(special);
    int d1 = mindist;
    vi cc;
    for(int it : special) if(it != node.fi and it != node.se) cc.pb(it);
    dijkstra(cc);
    minimize(res,mindist + d1);
    dij(node.fi);
    pii x = min1;
    pii y = min2;
    dij(node.se);
    if(x.se == node.se)
    {
        int cc = inf;
        for(int it : special) if(it != node.fi and it != node.se and it != y.se) minimize(cc,d[it]);
        minimize(res,y.fi + cc);
    }
    else
    {
        int cc = inf;
        for(int it : special) if(it != node.fi and it != node.se and it != x.se) minimize(cc,d[it]);
        minimize(res,x.fi + cc);
    }
    dij(node.se);
    x = min1;
    y = min2;
    dij(node.fi);
    if(x.se == node.fi)
    {
        int cc = inf;
        for(int it : special) if(it != node.fi and it != node.se and it != y.se) minimize(cc,d[it]);
        minimize(res,y.fi + cc);
    }
    else
    {
        int cc = inf;
        for(int it : special) if(it != node.fi and it != node.se and it != x.se) minimize(cc,d[it]);
        minimize(res,x.fi + cc);
    }
    cout << res;
}

Compilation message

RelayMarathon.cpp:128:1: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
  128 | main()
      | ^~~~
RelayMarathon.cpp: In function 'int main()':
RelayMarathon.cpp:133:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  133 |         freopen(name ".inp", "r", stdin);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~
RelayMarathon.cpp:134:16: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)' declared with attribute 'warn_unused_result' [-Wunused-result]
  134 |         freopen(name ".out", "w", stdout);
      |         ~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5712 KB Output is correct
2 Correct 4 ms 5968 KB Output is correct
3 Correct 2 ms 5880 KB Output is correct
4 Correct 2 ms 5712 KB Output is correct
5 Correct 2 ms 5768 KB Output is correct
6 Correct 3 ms 5712 KB Output is correct
7 Correct 2 ms 5712 KB Output is correct
8 Correct 3 ms 5712 KB Output is correct
9 Correct 2 ms 5712 KB Output is correct
10 Correct 2 ms 5768 KB Output is correct
11 Correct 2 ms 5712 KB Output is correct
12 Correct 3 ms 5712 KB Output is correct
13 Correct 3 ms 5712 KB Output is correct
14 Correct 2 ms 5712 KB Output is correct
15 Correct 3 ms 5780 KB Output is correct
16 Correct 2 ms 5712 KB Output is correct
17 Correct 3 ms 5712 KB Output is correct
18 Correct 2 ms 5768 KB Output is correct
19 Correct 3 ms 5884 KB Output is correct
20 Correct 3 ms 5712 KB Output is correct
21 Correct 2 ms 5712 KB Output is correct
22 Correct 2 ms 5712 KB Output is correct
23 Correct 2 ms 5660 KB Output is correct
24 Correct 2 ms 5712 KB Output is correct
25 Correct 2 ms 5712 KB Output is correct
26 Correct 2 ms 5884 KB Output is correct
27 Correct 3 ms 5712 KB Output is correct
28 Correct 3 ms 5712 KB Output is correct
29 Correct 3 ms 5712 KB Output is correct
30 Correct 3 ms 5712 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5712 KB Output is correct
2 Correct 4 ms 5968 KB Output is correct
3 Correct 2 ms 5880 KB Output is correct
4 Correct 2 ms 5712 KB Output is correct
5 Correct 2 ms 5768 KB Output is correct
6 Correct 3 ms 5712 KB Output is correct
7 Correct 2 ms 5712 KB Output is correct
8 Correct 3 ms 5712 KB Output is correct
9 Correct 2 ms 5712 KB Output is correct
10 Correct 2 ms 5768 KB Output is correct
11 Correct 2 ms 5712 KB Output is correct
12 Correct 3 ms 5712 KB Output is correct
13 Correct 3 ms 5712 KB Output is correct
14 Correct 2 ms 5712 KB Output is correct
15 Correct 3 ms 5780 KB Output is correct
16 Correct 2 ms 5712 KB Output is correct
17 Correct 3 ms 5712 KB Output is correct
18 Correct 2 ms 5768 KB Output is correct
19 Correct 3 ms 5884 KB Output is correct
20 Correct 3 ms 5712 KB Output is correct
21 Correct 2 ms 5712 KB Output is correct
22 Correct 2 ms 5712 KB Output is correct
23 Correct 2 ms 5660 KB Output is correct
24 Correct 2 ms 5712 KB Output is correct
25 Correct 2 ms 5712 KB Output is correct
26 Correct 2 ms 5884 KB Output is correct
27 Correct 3 ms 5712 KB Output is correct
28 Correct 3 ms 5712 KB Output is correct
29 Correct 3 ms 5712 KB Output is correct
30 Correct 3 ms 5712 KB Output is correct
31 Correct 3 ms 5880 KB Output is correct
32 Correct 3 ms 5800 KB Output is correct
33 Correct 3 ms 5712 KB Output is correct
34 Correct 2 ms 5712 KB Output is correct
35 Correct 3 ms 5712 KB Output is correct
36 Correct 4 ms 6136 KB Output is correct
37 Correct 5 ms 6224 KB Output is correct
38 Correct 3 ms 5712 KB Output is correct
39 Correct 20 ms 11100 KB Output is correct
40 Correct 7 ms 6992 KB Output is correct
41 Correct 3 ms 5712 KB Output is correct
42 Correct 6 ms 6912 KB Output is correct
43 Correct 3 ms 5968 KB Output is correct
44 Correct 3 ms 5712 KB Output is correct
45 Correct 2 ms 5548 KB Output is correct
46 Correct 22 ms 11368 KB Output is correct
47 Correct 6 ms 6648 KB Output is correct
48 Correct 19 ms 10972 KB Output is correct
49 Correct 20 ms 11088 KB Output is correct
50 Correct 3 ms 5712 KB Output is correct
51 Correct 3 ms 5712 KB Output is correct
52 Correct 2 ms 5816 KB Output is correct
53 Correct 14 ms 8528 KB Output is correct
54 Correct 23 ms 11376 KB Output is correct
55 Correct 3 ms 5884 KB Output is correct
56 Correct 3 ms 5712 KB Output is correct
57 Correct 2 ms 5712 KB Output is correct
58 Correct 24 ms 11584 KB Output is correct
59 Correct 2 ms 5712 KB Output is correct
60 Correct 3 ms 5880 KB Output is correct

Subtask #3
25.0 / 25.0

# Verdict Execution time Memory Grader output
1 Correct 76 ms 10404 KB Output is correct
2 Correct 5 ms 6392 KB Output is correct
3 Correct 1357 ms 134924 KB Output is correct
4 Correct 667 ms 71712 KB Output is correct
5 Correct 190 ms 17928 KB Output is correct
6 Correct 153 ms 14900 KB Output is correct
7 Correct 203 ms 17684 KB Output is correct
8 Correct 81 ms 9832 KB Output is correct
9 Correct 135 ms 14304 KB Output is correct
10 Correct 97 ms 10868 KB Output is correct
11 Correct 1223 ms 138920 KB Output is correct
12 Correct 112 ms 12392 KB Output is correct
13 Correct 468 ms 49324 KB Output is correct
14 Correct 217 ms 19748 KB Output is correct
15 Correct 1418 ms 136584 KB Output is correct
16 Correct 45 ms 9040 KB Output is correct
17 Correct 953 ms 97544 KB Output is correct
18 Correct 5 ms 6224 KB Output is correct
19 Correct 1414 ms 159656 KB Output is correct
20 Correct 191 ms 17004 KB Output is correct
21 Correct 168 ms 15524 KB Output is correct
22 Correct 90 ms 11644 KB Output is correct
23 Correct 16 ms 8528 KB Output is correct
24 Correct 928 ms 111200 KB Output is correct
25 Correct 141 ms 14352 KB Output is correct
26 Correct 68 ms 9800 KB Output is correct
27 Correct 120 ms 12156 KB Output is correct
28 Correct 11 ms 7504 KB Output is correct
29 Correct 212 ms 19124 KB Output is correct
30 Correct 362 ms 31672 KB Output is correct

Subtask #4
0 / 58.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 5712 KB Output is correct
2 Correct 4 ms 5968 KB Output is correct
3 Correct 2 ms 5880 KB Output is correct
4 Correct 2 ms 5712 KB Output is correct
5 Correct 2 ms 5768 KB Output is correct
6 Correct 3 ms 5712 KB Output is correct
7 Correct 2 ms 5712 KB Output is correct
8 Correct 3 ms 5712 KB Output is correct
9 Correct 2 ms 5712 KB Output is correct
10 Correct 2 ms 5768 KB Output is correct
11 Correct 2 ms 5712 KB Output is correct
12 Correct 3 ms 5712 KB Output is correct
13 Correct 3 ms 5712 KB Output is correct
14 Correct 2 ms 5712 KB Output is correct
15 Correct 3 ms 5780 KB Output is correct
16 Correct 2 ms 5712 KB Output is correct
17 Correct 3 ms 5712 KB Output is correct
18 Correct 2 ms 5768 KB Output is correct
19 Correct 3 ms 5884 KB Output is correct
20 Correct 3 ms 5712 KB Output is correct
21 Correct 2 ms 5712 KB Output is correct
22 Correct 2 ms 5712 KB Output is correct
23 Correct 2 ms 5660 KB Output is correct
24 Correct 2 ms 5712 KB Output is correct
25 Correct 2 ms 5712 KB Output is correct
26 Correct 2 ms 5884 KB Output is correct
27 Correct 3 ms 5712 KB Output is correct
28 Correct 3 ms 5712 KB Output is correct
29 Correct 3 ms 5712 KB Output is correct
30 Correct 3 ms 5712 KB Output is correct
31 Correct 3 ms 5880 KB Output is correct
32 Correct 3 ms 5800 KB Output is correct
33 Correct 3 ms 5712 KB Output is correct
34 Correct 2 ms 5712 KB Output is correct
35 Correct 3 ms 5712 KB Output is correct
36 Correct 4 ms 6136 KB Output is correct
37 Correct 5 ms 6224 KB Output is correct
38 Correct 3 ms 5712 KB Output is correct
39 Correct 20 ms 11100 KB Output is correct
40 Correct 7 ms 6992 KB Output is correct
41 Correct 3 ms 5712 KB Output is correct
42 Correct 6 ms 6912 KB Output is correct
43 Correct 3 ms 5968 KB Output is correct
44 Correct 3 ms 5712 KB Output is correct
45 Correct 2 ms 5548 KB Output is correct
46 Correct 22 ms 11368 KB Output is correct
47 Correct 6 ms 6648 KB Output is correct
48 Correct 19 ms 10972 KB Output is correct
49 Correct 20 ms 11088 KB Output is correct
50 Correct 3 ms 5712 KB Output is correct
51 Correct 3 ms 5712 KB Output is correct
52 Correct 2 ms 5816 KB Output is correct
53 Correct 14 ms 8528 KB Output is correct
54 Correct 23 ms 11376 KB Output is correct
55 Correct 3 ms 5884 KB Output is correct
56 Correct 3 ms 5712 KB Output is correct
57 Correct 2 ms 5712 KB Output is correct
58 Correct 24 ms 11584 KB Output is correct
59 Correct 2 ms 5712 KB Output is correct
60 Correct 3 ms 5880 KB Output is correct
61 Correct 76 ms 10404 KB Output is correct
62 Correct 5 ms 6392 KB Output is correct
63 Correct 1357 ms 134924 KB Output is correct
64 Correct 667 ms 71712 KB Output is correct
65 Correct 190 ms 17928 KB Output is correct
66 Correct 153 ms 14900 KB Output is correct
67 Correct 203 ms 17684 KB Output is correct
68 Correct 81 ms 9832 KB Output is correct
69 Correct 135 ms 14304 KB Output is correct
70 Correct 97 ms 10868 KB Output is correct
71 Correct 1223 ms 138920 KB Output is correct
72 Correct 112 ms 12392 KB Output is correct
73 Correct 468 ms 49324 KB Output is correct
74 Correct 217 ms 19748 KB Output is correct
75 Correct 1418 ms 136584 KB Output is correct
76 Correct 45 ms 9040 KB Output is correct
77 Correct 953 ms 97544 KB Output is correct
78 Correct 5 ms 6224 KB Output is correct
79 Correct 1414 ms 159656 KB Output is correct
80 Correct 191 ms 17004 KB Output is correct
81 Correct 168 ms 15524 KB Output is correct
82 Correct 90 ms 11644 KB Output is correct
83 Correct 16 ms 8528 KB Output is correct
84 Correct 928 ms 111200 KB Output is correct
85 Correct 141 ms 14352 KB Output is correct
86 Correct 68 ms 9800 KB Output is correct
87 Correct 120 ms 12156 KB Output is correct
88 Correct 11 ms 7504 KB Output is correct
89 Correct 212 ms 19124 KB Output is correct
90 Correct 362 ms 31672 KB Output is correct
91 Incorrect 133 ms 14248 KB Output isn't correct
92 Halted 0 ms 0 KB -