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Submission #1047142

# Submission time Handle Problem Language Result Execution time Memory
1047142 2024-08-07T09:20:54 Z KasymK Swapping Cities (APIO20_swap) C++17
53 / 100
 143 ms 46732 KB 
#include "bits/stdc++.h"
using namespace std;
#define ff first
#define ss second	
#define all(v) v.begin(), v.end()
#define ll long long
#define pb push_back
#define pii pair<int, int>
#define wr puts("----------------")
template<class T>bool umin(T& a,T b){if(a>b){a=b;return 1;}return 0;}
template<class T>bool umax(T& a,T b){if(a<b){a=b;return 1;}return 0;}
const int maxn = 2e5+5;
const int LOG = 20;
int rep[maxn], C[maxn], deg[maxn], dp[maxn], P[maxn], ok[maxn], G[maxn], d[maxn], n, m, N, up[maxn][LOG];
vector<int> adj[maxn];
vector<array<int, 3>> A;

int find(int x){
    if(x == rep[x])
        return x;
    return rep[x] = find(rep[x]); // path compression
}
 
void merge(int a, int b) {
    a = find(a);
    b = find(b);
    n++;
    if(a == b)
        C[n] = 1;
    rep[n] = rep[a] = rep[b] = n;
    if(G[a] or G[b])
        G[n] = 1;
    if(C[a] or C[b])
        C[n] = 1;
    adj[n].pb(a);
    if(a != b) adj[n].pb(b);
}
 
void dfs(int x, int pr = -1) {
    for(int i = 1; i < LOG; ++i)
        up[x][i] = up[up[x][i-1]][i-1];
    if(ok[x])
        pr = x;
    dp[x] = pr;
    for(int &i : adj[x]) {
        d[i] = d[x]+1;
        up[i][0] = x;
        P[i] = x;
        dfs(i, pr);
    }
}

int LCA(int a, int b) {
    if(d[a] < d[b])
        swap(a, b);
    int diff = d[a]-d[b];
    for(int i = LOG-1; i >= 0; --i)
        if(diff>>i&1)
            a = up[a][i];
    if(a == b)
        return a;
    for(int i = LOG-1; i >= 0; --i)
        if(up[a][i] != up[b][i])
            a = up[a][i], b = up[b][i];
    return up[a][0];
}
 
void init(int _N, int _M, vector<int> U, vector<int> V, vector<int> W) {
    n = _N; N = _N; m = _M;
    for(int i = 1; i <= n+m; ++i)
        rep[i] = i;
    for(int i = 0; i < m; ++i)
        A.pb({W[i], U[i]+1, V[i]+1});
    sort(all(A));
    for(auto &[w, u, v] : A){
        deg[u]++, deg[v]++;
        if(deg[u] >= 3 or deg[v] >= 3)
            G[n+1] = 1;
        merge(u, v);
    }
    for(int i = 1; i <= n; ++i)
        ok[i] = (G[i] or C[i]);
    dfs(n);
}
 
int getMinimumFuelCapacity(int x, int y) {
    x++, y++;
    int ad = LCA(x, y);
    if(dp[ad] == -1)
        return -1;
    return A[dp[ad]-N-1][0];
}

// int main(){
//     init(5, 6, {0, 0, 1, 1, 1, 2}, {1, 2, 2, 3, 4, 3}, {4, 4, 1, 2, 10, 3});
//     vector<int> Sol;
//     Sol.pb(3);
//     Sol.pb(10);
//     Sol.pb(4);
//     vector<int> equal;
//     int rt = getMinimumFuelCapacity(1, 2);
//     equal.pb(rt);
//     rt = getMinimumFuelCapacity(2, 4);
//     equal.pb(rt);
//     rt = getMinimumFuelCapacity(0, 1);
//     equal.pb(rt);
//     if(equal == Sol)
//         puts("Correct.");
//     else{
//         for(int i = 0; i < 3; ++i)
//             if(Sol[i] != equal[i]){
//                 printf("In test %d, Returned %d, but answer is %d\n", i+1, equal[i], Sol[i]);
//                 return 0;
//             }
//     }
//     return 0;
// }

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 1 ms 10844 KB Output is correct
7 Correct 1 ms 10844 KB Output is correct
8 Correct 1 ms 10872 KB Output is correct
9 Correct 45 ms 29892 KB Output is correct
10 Correct 56 ms 33564 KB Output is correct
11 Correct 68 ms 33224 KB Output is correct
12 Correct 60 ms 33976 KB Output is correct
13 Correct 55 ms 37832 KB Output is correct
14 Correct 45 ms 30152 KB Output is correct
15 Correct 97 ms 37736 KB Output is correct
16 Correct 113 ms 37240 KB Output is correct
17 Correct 110 ms 38032 KB Output is correct
18 Correct 121 ms 41776 KB Output is correct
19 Correct 47 ms 18448 KB Output is correct
20 Correct 104 ms 38660 KB Output is correct
21 Correct 109 ms 38788 KB Output is correct
22 Correct 115 ms 39472 KB Output is correct
23 Correct 130 ms 43304 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 106 ms 45980 KB Output is correct
4 Correct 105 ms 46636 KB Output is correct
5 Correct 108 ms 46428 KB Output is correct
6 Correct 112 ms 46444 KB Output is correct
7 Correct 108 ms 46732 KB Output is correct
8 Correct 106 ms 45936 KB Output is correct
9 Correct 105 ms 46404 KB Output is correct
10 Correct 104 ms 45696 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 1 ms 10844 KB Output is correct
7 Correct 1 ms 10844 KB Output is correct
8 Correct 1 ms 10872 KB Output is correct
9 Correct 2 ms 10840 KB Output is correct
10 Correct 1 ms 10844 KB Output is correct
11 Correct 2 ms 10844 KB Output is correct
12 Correct 1 ms 10924 KB Output is correct
13 Correct 2 ms 10844 KB Output is correct
14 Correct 1 ms 10844 KB Output is correct
15 Correct 2 ms 10896 KB Output is correct
16 Correct 1 ms 10876 KB Output is correct
17 Correct 2 ms 10840 KB Output is correct
18 Correct 2 ms 10896 KB Output is correct
19 Correct 2 ms 10844 KB Output is correct
20 Correct 2 ms 10880 KB Output is correct
21 Correct 2 ms 10844 KB Output is correct
22 Correct 2 ms 11100 KB Output is correct
23 Correct 2 ms 10844 KB Output is correct
24 Correct 2 ms 11100 KB Output is correct
25 Correct 2 ms 11136 KB Output is correct
26 Correct 2 ms 11100 KB Output is correct
27 Correct 1 ms 10844 KB Output is correct
28 Correct 2 ms 11100 KB Output is correct

Subtask #4
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 1 ms 10844 KB Output is correct
6 Correct 2 ms 10840 KB Output is correct
7 Correct 1 ms 10844 KB Output is correct
8 Correct 1 ms 10844 KB Output is correct
9 Correct 1 ms 10872 KB Output is correct
10 Correct 45 ms 29892 KB Output is correct
11 Correct 56 ms 33564 KB Output is correct
12 Correct 68 ms 33224 KB Output is correct
13 Correct 60 ms 33976 KB Output is correct
14 Correct 55 ms 37832 KB Output is correct
15 Correct 1 ms 10844 KB Output is correct
16 Correct 2 ms 10844 KB Output is correct
17 Correct 1 ms 10924 KB Output is correct
18 Correct 2 ms 10844 KB Output is correct
19 Correct 1 ms 10844 KB Output is correct
20 Correct 2 ms 10896 KB Output is correct
21 Correct 1 ms 10876 KB Output is correct
22 Correct 2 ms 10840 KB Output is correct
23 Correct 2 ms 10896 KB Output is correct
24 Correct 2 ms 10844 KB Output is correct
25 Correct 2 ms 10880 KB Output is correct
26 Correct 2 ms 10844 KB Output is correct
27 Correct 2 ms 11100 KB Output is correct
28 Correct 2 ms 10844 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11136 KB Output is correct
31 Correct 2 ms 11100 KB Output is correct
32 Correct 1 ms 10844 KB Output is correct
33 Correct 2 ms 11100 KB Output is correct
34 Correct 8 ms 12828 KB Output is correct
35 Correct 58 ms 33528 KB Output is correct
36 Correct 55 ms 33744 KB Output is correct
37 Correct 55 ms 33976 KB Output is correct
38 Correct 56 ms 33732 KB Output is correct
39 Correct 56 ms 33696 KB Output is correct
40 Correct 46 ms 32964 KB Output is correct
41 Correct 54 ms 33992 KB Output is correct
42 Correct 53 ms 33552 KB Output is correct
43 Correct 55 ms 39108 KB Output is correct
44 Correct 58 ms 34424 KB Output is correct
45 Runtime error 31 ms 29012 KB Execution killed with signal 11
46 Halted 0 ms 0 KB -

Subtask #5
23.0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10840 KB Output is correct
6 Correct 1 ms 10844 KB Output is correct
7 Correct 1 ms 10844 KB Output is correct
8 Correct 1 ms 10872 KB Output is correct
9 Correct 45 ms 29892 KB Output is correct
10 Correct 56 ms 33564 KB Output is correct
11 Correct 68 ms 33224 KB Output is correct
12 Correct 60 ms 33976 KB Output is correct
13 Correct 55 ms 37832 KB Output is correct
14 Correct 45 ms 30152 KB Output is correct
15 Correct 97 ms 37736 KB Output is correct
16 Correct 113 ms 37240 KB Output is correct
17 Correct 110 ms 38032 KB Output is correct
18 Correct 121 ms 41776 KB Output is correct
19 Correct 106 ms 45980 KB Output is correct
20 Correct 105 ms 46636 KB Output is correct
21 Correct 108 ms 46428 KB Output is correct
22 Correct 112 ms 46444 KB Output is correct
23 Correct 108 ms 46732 KB Output is correct
24 Correct 106 ms 45936 KB Output is correct
25 Correct 105 ms 46404 KB Output is correct
26 Correct 104 ms 45696 KB Output is correct
27 Correct 1 ms 10844 KB Output is correct
28 Correct 2 ms 10844 KB Output is correct
29 Correct 1 ms 10924 KB Output is correct
30 Correct 2 ms 10844 KB Output is correct
31 Correct 1 ms 10844 KB Output is correct
32 Correct 2 ms 10896 KB Output is correct
33 Correct 1 ms 10876 KB Output is correct
34 Correct 2 ms 10840 KB Output is correct
35 Correct 2 ms 10896 KB Output is correct
36 Correct 8 ms 12828 KB Output is correct
37 Correct 58 ms 33528 KB Output is correct
38 Correct 55 ms 33744 KB Output is correct
39 Correct 55 ms 33976 KB Output is correct
40 Correct 56 ms 33732 KB Output is correct
41 Correct 56 ms 33696 KB Output is correct
42 Correct 46 ms 32964 KB Output is correct
43 Correct 54 ms 33992 KB Output is correct
44 Correct 53 ms 33552 KB Output is correct
45 Correct 55 ms 39108 KB Output is correct
46 Correct 58 ms 34424 KB Output is correct
47 Correct 12 ms 13080 KB Output is correct
48 Correct 103 ms 38448 KB Output is correct
49 Correct 104 ms 38708 KB Output is correct
50 Correct 104 ms 38760 KB Output is correct
51 Correct 110 ms 38772 KB Output is correct
52 Correct 95 ms 38260 KB Output is correct
53 Correct 84 ms 32700 KB Output is correct
54 Correct 106 ms 39472 KB Output is correct
55 Correct 101 ms 38512 KB Output is correct
56 Correct 143 ms 43000 KB Output is correct
57 Correct 111 ms 39728 KB Output is correct

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 10840 KB Output is correct
2 Correct 2 ms 10844 KB Output is correct
3 Correct 1 ms 10844 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 1 ms 10844 KB Output is correct
6 Correct 2 ms 10840 KB Output is correct
7 Correct 1 ms 10844 KB Output is correct
8 Correct 1 ms 10844 KB Output is correct
9 Correct 1 ms 10872 KB Output is correct
10 Correct 45 ms 29892 KB Output is correct
11 Correct 56 ms 33564 KB Output is correct
12 Correct 68 ms 33224 KB Output is correct
13 Correct 60 ms 33976 KB Output is correct
14 Correct 55 ms 37832 KB Output is correct
15 Correct 45 ms 30152 KB Output is correct
16 Correct 97 ms 37736 KB Output is correct
17 Correct 113 ms 37240 KB Output is correct
18 Correct 110 ms 38032 KB Output is correct
19 Correct 121 ms 41776 KB Output is correct
20 Correct 106 ms 45980 KB Output is correct
21 Correct 105 ms 46636 KB Output is correct
22 Correct 108 ms 46428 KB Output is correct
23 Correct 112 ms 46444 KB Output is correct
24 Correct 108 ms 46732 KB Output is correct
25 Correct 106 ms 45936 KB Output is correct
26 Correct 105 ms 46404 KB Output is correct
27 Correct 104 ms 45696 KB Output is correct
28 Correct 1 ms 10844 KB Output is correct
29 Correct 2 ms 10844 KB Output is correct
30 Correct 1 ms 10924 KB Output is correct
31 Correct 2 ms 10844 KB Output is correct
32 Correct 1 ms 10844 KB Output is correct
33 Correct 2 ms 10896 KB Output is correct
34 Correct 1 ms 10876 KB Output is correct
35 Correct 2 ms 10840 KB Output is correct
36 Correct 2 ms 10896 KB Output is correct
37 Correct 8 ms 12828 KB Output is correct
38 Correct 58 ms 33528 KB Output is correct
39 Correct 55 ms 33744 KB Output is correct
40 Correct 55 ms 33976 KB Output is correct
41 Correct 56 ms 33732 KB Output is correct
42 Correct 56 ms 33696 KB Output is correct
43 Correct 46 ms 32964 KB Output is correct
44 Correct 54 ms 33992 KB Output is correct
45 Correct 53 ms 33552 KB Output is correct
46 Correct 55 ms 39108 KB Output is correct
47 Correct 58 ms 34424 KB Output is correct
48 Correct 12 ms 13080 KB Output is correct
49 Correct 103 ms 38448 KB Output is correct
50 Correct 104 ms 38708 KB Output is correct
51 Correct 104 ms 38760 KB Output is correct
52 Correct 110 ms 38772 KB Output is correct
53 Correct 95 ms 38260 KB Output is correct
54 Correct 84 ms 32700 KB Output is correct
55 Correct 106 ms 39472 KB Output is correct
56 Correct 101 ms 38512 KB Output is correct
57 Correct 143 ms 43000 KB Output is correct
58 Correct 111 ms 39728 KB Output is correct
59 Correct 47 ms 18448 KB Output is correct
60 Correct 104 ms 38660 KB Output is correct
61 Correct 109 ms 38788 KB Output is correct
62 Correct 115 ms 39472 KB Output is correct
63 Correct 130 ms 43304 KB Output is correct
64 Correct 2 ms 10844 KB Output is correct
65 Correct 2 ms 10880 KB Output is correct
66 Correct 2 ms 10844 KB Output is correct
67 Correct 2 ms 11100 KB Output is correct
68 Correct 2 ms 10844 KB Output is correct
69 Correct 2 ms 11100 KB Output is correct
70 Correct 2 ms 11136 KB Output is correct
71 Correct 2 ms 11100 KB Output is correct
72 Correct 1 ms 10844 KB Output is correct
73 Correct 2 ms 11100 KB Output is correct
74 Runtime error 31 ms 29012 KB Execution killed with signal 11
75 Halted 0 ms 0 KB -