oj.uz

Submission #977937

# Submission time Handle Problem Language Result Execution time Memory
977937 2024-05-08T14:10:40 Z Tuanlinh123 Swapping Cities (APIO20_swap) C++17
100 / 100
 230 ms 211168 KB 
#include "swap.h"
#include<bits/stdc++.h>
#define ll int
#define pll pair<ll, ll>
#define pb push_back
#define mp make_pair
#define fi first
#define se second
#define ld long double
#define sz(a) ((ll)(a).size())
using namespace std;

const ll maxn=1000005, inf=1e9;
vector <pll> euler;
pll sp[20][maxn*2];
vector <ll> A[maxn];
ll notline[maxn], c[maxn], lca[maxn], ne[maxn]; 

namespace DSU
{
    ll cr, dsu[maxn], l[maxn], r[maxn];
    ll Find(ll i){return dsu[i]>=0?dsu[i]=Find(dsu[i]):i;}
    void init(ll sz)
    {
        cr=sz-1, memset(dsu, -1, sizeof(dsu));
        for (ll i=0; i<sz; i++) l[i]=r[i]=i;
    }

    void Union(ll a, ll b, ll w)
    {
        ll Pa=Find(a), Pb=Find(b);
        if (Pa==Pb)
        {
            A[++cr].pb(Pa), notline[cr]=1, c[cr]=w;
            dsu[Pa]=cr, l[cr]=r[cr]=-1;
            return;
        }
        A[++cr].pb(Pa), A[cr].pb(Pb), c[cr]=w;
        dsu[Pa]=dsu[Pb]=cr;
        if (a!=l[Pa]) swap(l[Pa], r[Pa]);
        if (b!=l[Pb]) swap(l[Pb], r[Pb]);
        if (a!=l[Pa] || b!=l[Pb])
            notline[cr]=1, l[cr]=r[cr]=-1;
        else l[cr]=r[Pa], r[cr]=r[Pb];
    }
}

void dfs(ll u)
{
    if (notline[u]) ne[u]=u;
    lca[u]=sz(euler)+1;
    euler.pb({lca[u], u});
    for (ll v:A[u])
    {
        ne[v]=ne[u], dfs(v);
        euler.pb({lca[u], u});
    }
}

void init_sp()
{
    ll n=sz(euler);
    for (ll i=0; i<n; i++)
        sp[0][i]=euler[i];
    for (ll i=1; i<20; i++)
        for (ll j=0; j+(1<<i)<=n; j++)
            sp[i][j]=min(sp[i-1][j], sp[i-1][j+(1<<i-1)]);
}

ll LCA(ll u, ll v)
{
    ll l=lca[u], r=lca[v];
    if (l>r) swap(l, r);
    ll j=__lg(r-l+1);
    return min(sp[j][l], sp[j][r-(1<<j)+1]).se;
}

void init(int n, int m, vector<int> U, vector<int> V, vector<int> W) 
{
    DSU::init(n);
    vector <pair<ll, pll>> edge;
    for (ll i=0; i<m; i++)
        edge.pb({W[i], {U[i], V[i]}});
    sort(edge.begin(), edge.end());
    for (auto [w, e]:edge) DSU::Union(e.fi, e.se, w);
    ne[DSU::cr]=-1, dfs(DSU::cr), init_sp();
}

int getMinimumFuelCapacity(int X, int Y) 
{
    ll p=LCA(X, Y);
    if (ne[p]==-1) return -1;
    return c[ne[p]];
}

Compilation message

swap.cpp: In function 'void init_sp()':
swap.cpp:67:53: warning: suggest parentheses around '-' inside '<<' [-Wparentheses]
   67 |             sp[i][j]=min(sp[i-1][j], sp[i-1][j+(1<<i-1)]);
      |                                                    ~^~

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41308 KB Output is correct
2 Correct 8 ms 43356 KB Output is correct
3 Correct 8 ms 43356 KB Output is correct
4 Correct 10 ms 57948 KB Output is correct
5 Correct 10 ms 59996 KB Output is correct
6 Correct 12 ms 59996 KB Output is correct
7 Correct 10 ms 59996 KB Output is correct
8 Correct 11 ms 59992 KB Output is correct
9 Correct 80 ms 132796 KB Output is correct
10 Correct 89 ms 145076 KB Output is correct
11 Correct 83 ms 142144 KB Output is correct
12 Correct 104 ms 149200 KB Output is correct
13 Correct 78 ms 153528 KB Output is correct
14 Correct 75 ms 133944 KB Output is correct
15 Correct 138 ms 150208 KB Output is correct
16 Correct 146 ms 146208 KB Output is correct
17 Correct 139 ms 153280 KB Output is correct
18 Correct 131 ms 157544 KB Output is correct
19 Correct 60 ms 83408 KB Output is correct
20 Correct 136 ms 152036 KB Output is correct
21 Correct 133 ms 147904 KB Output is correct
22 Correct 140 ms 154848 KB Output is correct
23 Correct 132 ms 159568 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41308 KB Output is correct
2 Correct 8 ms 43356 KB Output is correct
3 Correct 122 ms 156352 KB Output is correct
4 Correct 124 ms 163956 KB Output is correct
5 Correct 136 ms 158916 KB Output is correct
6 Correct 122 ms 163428 KB Output is correct
7 Correct 125 ms 161204 KB Output is correct
8 Correct 119 ms 156152 KB Output is correct
9 Correct 122 ms 161664 KB Output is correct
10 Correct 125 ms 156816 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41308 KB Output is correct
2 Correct 8 ms 43356 KB Output is correct
3 Correct 8 ms 43356 KB Output is correct
4 Correct 10 ms 57948 KB Output is correct
5 Correct 10 ms 59996 KB Output is correct
6 Correct 12 ms 59996 KB Output is correct
7 Correct 10 ms 59996 KB Output is correct
8 Correct 11 ms 59992 KB Output is correct
9 Correct 8 ms 47452 KB Output is correct
10 Correct 11 ms 62136 KB Output is correct
11 Correct 12 ms 62044 KB Output is correct
12 Correct 12 ms 62040 KB Output is correct
13 Correct 10 ms 62048 KB Output is correct
14 Correct 10 ms 62044 KB Output is correct
15 Correct 11 ms 62044 KB Output is correct
16 Correct 11 ms 62156 KB Output is correct
17 Correct 11 ms 62044 KB Output is correct
18 Correct 11 ms 61920 KB Output is correct
19 Correct 10 ms 62044 KB Output is correct
20 Correct 11 ms 62044 KB Output is correct
21 Correct 11 ms 61980 KB Output is correct
22 Correct 12 ms 62300 KB Output is correct
23 Correct 10 ms 62044 KB Output is correct
24 Correct 11 ms 64348 KB Output is correct
25 Correct 12 ms 64348 KB Output is correct
26 Correct 11 ms 64348 KB Output is correct
27 Correct 10 ms 62044 KB Output is correct
28 Correct 11 ms 64348 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 47452 KB Output is correct
2 Correct 8 ms 41308 KB Output is correct
3 Correct 8 ms 43356 KB Output is correct
4 Correct 8 ms 43356 KB Output is correct
5 Correct 10 ms 57948 KB Output is correct
6 Correct 10 ms 59996 KB Output is correct
7 Correct 12 ms 59996 KB Output is correct
8 Correct 10 ms 59996 KB Output is correct
9 Correct 11 ms 59992 KB Output is correct
10 Correct 80 ms 132796 KB Output is correct
11 Correct 89 ms 145076 KB Output is correct
12 Correct 83 ms 142144 KB Output is correct
13 Correct 104 ms 149200 KB Output is correct
14 Correct 78 ms 153528 KB Output is correct
15 Correct 11 ms 62136 KB Output is correct
16 Correct 12 ms 62044 KB Output is correct
17 Correct 12 ms 62040 KB Output is correct
18 Correct 10 ms 62048 KB Output is correct
19 Correct 10 ms 62044 KB Output is correct
20 Correct 11 ms 62044 KB Output is correct
21 Correct 11 ms 62156 KB Output is correct
22 Correct 11 ms 62044 KB Output is correct
23 Correct 11 ms 61920 KB Output is correct
24 Correct 10 ms 62044 KB Output is correct
25 Correct 11 ms 62044 KB Output is correct
26 Correct 11 ms 61980 KB Output is correct
27 Correct 12 ms 62300 KB Output is correct
28 Correct 10 ms 62044 KB Output is correct
29 Correct 11 ms 64348 KB Output is correct
30 Correct 12 ms 64348 KB Output is correct
31 Correct 11 ms 64348 KB Output is correct
32 Correct 10 ms 62044 KB Output is correct
33 Correct 11 ms 64348 KB Output is correct
34 Correct 20 ms 78036 KB Output is correct
35 Correct 89 ms 150616 KB Output is correct
36 Correct 106 ms 151488 KB Output is correct
37 Correct 98 ms 150716 KB Output is correct
38 Correct 91 ms 149320 KB Output is correct
39 Correct 89 ms 149064 KB Output is correct
40 Correct 84 ms 140108 KB Output is correct
41 Correct 91 ms 151768 KB Output is correct
42 Correct 88 ms 150532 KB Output is correct
43 Correct 78 ms 157408 KB Output is correct
44 Correct 92 ms 151416 KB Output is correct
45 Correct 121 ms 171412 KB Output is correct
46 Correct 89 ms 150972 KB Output is correct
47 Correct 89 ms 150940 KB Output is correct
48 Correct 97 ms 157632 KB Output is correct
49 Correct 102 ms 156460 KB Output is correct
50 Correct 87 ms 135612 KB Output is correct
51 Correct 108 ms 157388 KB Output is correct
52 Correct 134 ms 182456 KB Output is correct
53 Correct 145 ms 193464 KB Output is correct
54 Correct 167 ms 207548 KB Output is correct
55 Correct 86 ms 156348 KB Output is correct
56 Correct 145 ms 195308 KB Output is correct

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 41308 KB Output is correct
2 Correct 8 ms 43356 KB Output is correct
3 Correct 8 ms 43356 KB Output is correct
4 Correct 10 ms 57948 KB Output is correct
5 Correct 10 ms 59996 KB Output is correct
6 Correct 12 ms 59996 KB Output is correct
7 Correct 10 ms 59996 KB Output is correct
8 Correct 11 ms 59992 KB Output is correct
9 Correct 80 ms 132796 KB Output is correct
10 Correct 89 ms 145076 KB Output is correct
11 Correct 83 ms 142144 KB Output is correct
12 Correct 104 ms 149200 KB Output is correct
13 Correct 78 ms 153528 KB Output is correct
14 Correct 75 ms 133944 KB Output is correct
15 Correct 138 ms 150208 KB Output is correct
16 Correct 146 ms 146208 KB Output is correct
17 Correct 139 ms 153280 KB Output is correct
18 Correct 131 ms 157544 KB Output is correct
19 Correct 122 ms 156352 KB Output is correct
20 Correct 124 ms 163956 KB Output is correct
21 Correct 136 ms 158916 KB Output is correct
22 Correct 122 ms 163428 KB Output is correct
23 Correct 125 ms 161204 KB Output is correct
24 Correct 119 ms 156152 KB Output is correct
25 Correct 122 ms 161664 KB Output is correct
26 Correct 125 ms 156816 KB Output is correct
27 Correct 11 ms 62136 KB Output is correct
28 Correct 12 ms 62044 KB Output is correct
29 Correct 12 ms 62040 KB Output is correct
30 Correct 10 ms 62048 KB Output is correct
31 Correct 10 ms 62044 KB Output is correct
32 Correct 11 ms 62044 KB Output is correct
33 Correct 11 ms 62156 KB Output is correct
34 Correct 11 ms 62044 KB Output is correct
35 Correct 11 ms 61920 KB Output is correct
36 Correct 20 ms 78036 KB Output is correct
37 Correct 89 ms 150616 KB Output is correct
38 Correct 106 ms 151488 KB Output is correct
39 Correct 98 ms 150716 KB Output is correct
40 Correct 91 ms 149320 KB Output is correct
41 Correct 89 ms 149064 KB Output is correct
42 Correct 84 ms 140108 KB Output is correct
43 Correct 91 ms 151768 KB Output is correct
44 Correct 88 ms 150532 KB Output is correct
45 Correct 78 ms 157408 KB Output is correct
46 Correct 92 ms 151416 KB Output is correct
47 Correct 24 ms 78328 KB Output is correct
48 Correct 158 ms 155524 KB Output is correct
49 Correct 139 ms 154560 KB Output is correct
50 Correct 136 ms 154556 KB Output is correct
51 Correct 140 ms 154972 KB Output is correct
52 Correct 131 ms 148412 KB Output is correct
53 Correct 112 ms 129440 KB Output is correct
54 Correct 145 ms 155328 KB Output is correct
55 Correct 153 ms 154536 KB Output is correct
56 Correct 133 ms 160276 KB Output is correct
57 Correct 144 ms 155464 KB Output is correct

Subtask #6
27.0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 47452 KB Output is correct
2 Correct 8 ms 41308 KB Output is correct
3 Correct 8 ms 43356 KB Output is correct
4 Correct 8 ms 43356 KB Output is correct
5 Correct 10 ms 57948 KB Output is correct
6 Correct 10 ms 59996 KB Output is correct
7 Correct 12 ms 59996 KB Output is correct
8 Correct 10 ms 59996 KB Output is correct
9 Correct 11 ms 59992 KB Output is correct
10 Correct 80 ms 132796 KB Output is correct
11 Correct 89 ms 145076 KB Output is correct
12 Correct 83 ms 142144 KB Output is correct
13 Correct 104 ms 149200 KB Output is correct
14 Correct 78 ms 153528 KB Output is correct
15 Correct 75 ms 133944 KB Output is correct
16 Correct 138 ms 150208 KB Output is correct
17 Correct 146 ms 146208 KB Output is correct
18 Correct 139 ms 153280 KB Output is correct
19 Correct 131 ms 157544 KB Output is correct
20 Correct 122 ms 156352 KB Output is correct
21 Correct 124 ms 163956 KB Output is correct
22 Correct 136 ms 158916 KB Output is correct
23 Correct 122 ms 163428 KB Output is correct
24 Correct 125 ms 161204 KB Output is correct
25 Correct 119 ms 156152 KB Output is correct
26 Correct 122 ms 161664 KB Output is correct
27 Correct 125 ms 156816 KB Output is correct
28 Correct 11 ms 62136 KB Output is correct
29 Correct 12 ms 62044 KB Output is correct
30 Correct 12 ms 62040 KB Output is correct
31 Correct 10 ms 62048 KB Output is correct
32 Correct 10 ms 62044 KB Output is correct
33 Correct 11 ms 62044 KB Output is correct
34 Correct 11 ms 62156 KB Output is correct
35 Correct 11 ms 62044 KB Output is correct
36 Correct 11 ms 61920 KB Output is correct
37 Correct 20 ms 78036 KB Output is correct
38 Correct 89 ms 150616 KB Output is correct
39 Correct 106 ms 151488 KB Output is correct
40 Correct 98 ms 150716 KB Output is correct
41 Correct 91 ms 149320 KB Output is correct
42 Correct 89 ms 149064 KB Output is correct
43 Correct 84 ms 140108 KB Output is correct
44 Correct 91 ms 151768 KB Output is correct
45 Correct 88 ms 150532 KB Output is correct
46 Correct 78 ms 157408 KB Output is correct
47 Correct 92 ms 151416 KB Output is correct
48 Correct 24 ms 78328 KB Output is correct
49 Correct 158 ms 155524 KB Output is correct
50 Correct 139 ms 154560 KB Output is correct
51 Correct 136 ms 154556 KB Output is correct
52 Correct 140 ms 154972 KB Output is correct
53 Correct 131 ms 148412 KB Output is correct
54 Correct 112 ms 129440 KB Output is correct
55 Correct 145 ms 155328 KB Output is correct
56 Correct 153 ms 154536 KB Output is correct
57 Correct 133 ms 160276 KB Output is correct
58 Correct 144 ms 155464 KB Output is correct
59 Correct 60 ms 83408 KB Output is correct
60 Correct 136 ms 152036 KB Output is correct
61 Correct 133 ms 147904 KB Output is correct
62 Correct 140 ms 154848 KB Output is correct
63 Correct 132 ms 159568 KB Output is correct
64 Correct 10 ms 62044 KB Output is correct
65 Correct 11 ms 62044 KB Output is correct
66 Correct 11 ms 61980 KB Output is correct
67 Correct 12 ms 62300 KB Output is correct
68 Correct 10 ms 62044 KB Output is correct
69 Correct 11 ms 64348 KB Output is correct
70 Correct 12 ms 64348 KB Output is correct
71 Correct 11 ms 64348 KB Output is correct
72 Correct 10 ms 62044 KB Output is correct
73 Correct 11 ms 64348 KB Output is correct
74 Correct 121 ms 171412 KB Output is correct
75 Correct 89 ms 150972 KB Output is correct
76 Correct 89 ms 150940 KB Output is correct
77 Correct 97 ms 157632 KB Output is correct
78 Correct 102 ms 156460 KB Output is correct
79 Correct 87 ms 135612 KB Output is correct
80 Correct 108 ms 157388 KB Output is correct
81 Correct 134 ms 182456 KB Output is correct
82 Correct 145 ms 193464 KB Output is correct
83 Correct 167 ms 207548 KB Output is correct
84 Correct 86 ms 156348 KB Output is correct
85 Correct 145 ms 195308 KB Output is correct
86 Correct 58 ms 106688 KB Output is correct
87 Correct 142 ms 155068 KB Output is correct
88 Correct 140 ms 154592 KB Output is correct
89 Correct 166 ms 156936 KB Output is correct
90 Correct 158 ms 163928 KB Output is correct
91 Correct 159 ms 159004 KB Output is correct
92 Correct 152 ms 158656 KB Output is correct
93 Correct 187 ms 184768 KB Output is correct
94 Correct 196 ms 197236 KB Output is correct
95 Correct 230 ms 211168 KB Output is correct
96 Correct 130 ms 159860 KB Output is correct
97 Correct 166 ms 175764 KB Output is correct