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Submission #1047166

# Submission time Handle Problem Language Result Execution time Memory
1047166 2024-08-07T09:43:45 Z KasymK Swapping Cities (APIO20_swap) C++17
53 / 100
 134 ms 42928 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){
        if(~up[x][i-1])
            up[x][i] = up[up[x][i-1]][i-1];
        else
            up[x][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 1 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10840 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10844 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 10844 KB Output is correct
9 Correct 70 ms 28320 KB Output is correct
10 Correct 54 ms 31428 KB Output is correct
11 Correct 55 ms 31176 KB Output is correct
12 Correct 58 ms 31892 KB Output is correct
13 Correct 54 ms 35780 KB Output is correct
14 Correct 48 ms 28352 KB Output is correct
15 Correct 113 ms 33364 KB Output is correct
16 Correct 97 ms 33144 KB Output is correct
17 Correct 100 ms 33628 KB Output is correct
18 Correct 122 ms 37352 KB Output is correct
19 Correct 52 ms 16404 KB Output is correct
20 Correct 110 ms 34380 KB Output is correct
21 Correct 98 ms 34320 KB Output is correct
22 Correct 100 ms 34864 KB Output is correct
23 Correct 134 ms 38956 KB Output is correct

Subtask #2
7.0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 117 ms 42076 KB Output is correct
4 Correct 105 ms 42928 KB Output is correct
5 Correct 115 ms 42584 KB Output is correct
6 Correct 101 ms 42796 KB Output is correct
7 Correct 106 ms 42820 KB Output is correct
8 Correct 107 ms 41932 KB Output is correct
9 Correct 113 ms 42564 KB Output is correct
10 Correct 102 ms 41860 KB Output is correct

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10840 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10844 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 10844 KB Output is correct
9 Correct 2 ms 10844 KB Output is correct
10 Correct 2 ms 10844 KB Output is correct
11 Correct 1 ms 10844 KB Output is correct
12 Correct 1 ms 10844 KB Output is correct
13 Correct 1 ms 10844 KB Output is correct
14 Correct 1 ms 10844 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 1 ms 10844 KB Output is correct
17 Correct 1 ms 10844 KB Output is correct
18 Correct 2 ms 10856 KB Output is correct
19 Correct 1 ms 10844 KB Output is correct
20 Correct 2 ms 10844 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 3 ms 11100 KB Output is correct
26 Correct 2 ms 11100 KB Output is correct
27 Correct 2 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 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 10840 KB Output is correct
5 Correct 1 ms 10844 KB Output is correct
6 Correct 2 ms 10844 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 10844 KB Output is correct
10 Correct 70 ms 28320 KB Output is correct
11 Correct 54 ms 31428 KB Output is correct
12 Correct 55 ms 31176 KB Output is correct
13 Correct 58 ms 31892 KB Output is correct
14 Correct 54 ms 35780 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 1 ms 10844 KB Output is correct
17 Correct 1 ms 10844 KB Output is correct
18 Correct 1 ms 10844 KB Output is correct
19 Correct 1 ms 10844 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 1 ms 10844 KB Output is correct
22 Correct 1 ms 10844 KB Output is correct
23 Correct 2 ms 10856 KB Output is correct
24 Correct 1 ms 10844 KB Output is correct
25 Correct 2 ms 10844 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 3 ms 11100 KB Output is correct
31 Correct 2 ms 11100 KB Output is correct
32 Correct 2 ms 10844 KB Output is correct
33 Correct 2 ms 11100 KB Output is correct
34 Correct 8 ms 12572 KB Output is correct
35 Correct 60 ms 31956 KB Output is correct
36 Correct 54 ms 31940 KB Output is correct
37 Correct 57 ms 32160 KB Output is correct
38 Correct 53 ms 31920 KB Output is correct
39 Correct 58 ms 32116 KB Output is correct
40 Correct 50 ms 31184 KB Output is correct
41 Correct 59 ms 31692 KB Output is correct
42 Correct 53 ms 31684 KB Output is correct
43 Correct 56 ms 37316 KB Output is correct
44 Correct 68 ms 32204 KB Output is correct
45 Runtime error 32 ms 25944 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 1 ms 10844 KB Output is correct
2 Correct 1 ms 10844 KB Output is correct
3 Correct 1 ms 10840 KB Output is correct
4 Correct 1 ms 10844 KB Output is correct
5 Correct 2 ms 10844 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 10844 KB Output is correct
9 Correct 70 ms 28320 KB Output is correct
10 Correct 54 ms 31428 KB Output is correct
11 Correct 55 ms 31176 KB Output is correct
12 Correct 58 ms 31892 KB Output is correct
13 Correct 54 ms 35780 KB Output is correct
14 Correct 48 ms 28352 KB Output is correct
15 Correct 113 ms 33364 KB Output is correct
16 Correct 97 ms 33144 KB Output is correct
17 Correct 100 ms 33628 KB Output is correct
18 Correct 122 ms 37352 KB Output is correct
19 Correct 117 ms 42076 KB Output is correct
20 Correct 105 ms 42928 KB Output is correct
21 Correct 115 ms 42584 KB Output is correct
22 Correct 101 ms 42796 KB Output is correct
23 Correct 106 ms 42820 KB Output is correct
24 Correct 107 ms 41932 KB Output is correct
25 Correct 113 ms 42564 KB Output is correct
26 Correct 102 ms 41860 KB Output is correct
27 Correct 2 ms 10844 KB Output is correct
28 Correct 1 ms 10844 KB Output is correct
29 Correct 1 ms 10844 KB Output is correct
30 Correct 1 ms 10844 KB Output is correct
31 Correct 1 ms 10844 KB Output is correct
32 Correct 2 ms 10844 KB Output is correct
33 Correct 1 ms 10844 KB Output is correct
34 Correct 1 ms 10844 KB Output is correct
35 Correct 2 ms 10856 KB Output is correct
36 Correct 8 ms 12572 KB Output is correct
37 Correct 60 ms 31956 KB Output is correct
38 Correct 54 ms 31940 KB Output is correct
39 Correct 57 ms 32160 KB Output is correct
40 Correct 53 ms 31920 KB Output is correct
41 Correct 58 ms 32116 KB Output is correct
42 Correct 50 ms 31184 KB Output is correct
43 Correct 59 ms 31692 KB Output is correct
44 Correct 53 ms 31684 KB Output is correct
45 Correct 56 ms 37316 KB Output is correct
46 Correct 68 ms 32204 KB Output is correct
47 Correct 12 ms 12572 KB Output is correct
48 Correct 102 ms 34284 KB Output is correct
49 Correct 105 ms 34768 KB Output is correct
50 Correct 102 ms 34604 KB Output is correct
51 Correct 105 ms 34640 KB Output is correct
52 Correct 102 ms 34164 KB Output is correct
53 Correct 90 ms 29164 KB Output is correct
54 Correct 100 ms 34896 KB Output is correct
55 Correct 105 ms 34348 KB Output is correct
56 Correct 118 ms 38704 KB Output is correct
57 Correct 112 ms 35304 KB Output is correct

Subtask #6
0 / 27.0

# 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 10840 KB Output is correct
5 Correct 1 ms 10844 KB Output is correct
6 Correct 2 ms 10844 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 10844 KB Output is correct
10 Correct 70 ms 28320 KB Output is correct
11 Correct 54 ms 31428 KB Output is correct
12 Correct 55 ms 31176 KB Output is correct
13 Correct 58 ms 31892 KB Output is correct
14 Correct 54 ms 35780 KB Output is correct
15 Correct 48 ms 28352 KB Output is correct
16 Correct 113 ms 33364 KB Output is correct
17 Correct 97 ms 33144 KB Output is correct
18 Correct 100 ms 33628 KB Output is correct
19 Correct 122 ms 37352 KB Output is correct
20 Correct 117 ms 42076 KB Output is correct
21 Correct 105 ms 42928 KB Output is correct
22 Correct 115 ms 42584 KB Output is correct
23 Correct 101 ms 42796 KB Output is correct
24 Correct 106 ms 42820 KB Output is correct
25 Correct 107 ms 41932 KB Output is correct
26 Correct 113 ms 42564 KB Output is correct
27 Correct 102 ms 41860 KB Output is correct
28 Correct 2 ms 10844 KB Output is correct
29 Correct 1 ms 10844 KB Output is correct
30 Correct 1 ms 10844 KB Output is correct
31 Correct 1 ms 10844 KB Output is correct
32 Correct 1 ms 10844 KB Output is correct
33 Correct 2 ms 10844 KB Output is correct
34 Correct 1 ms 10844 KB Output is correct
35 Correct 1 ms 10844 KB Output is correct
36 Correct 2 ms 10856 KB Output is correct
37 Correct 8 ms 12572 KB Output is correct
38 Correct 60 ms 31956 KB Output is correct
39 Correct 54 ms 31940 KB Output is correct
40 Correct 57 ms 32160 KB Output is correct
41 Correct 53 ms 31920 KB Output is correct
42 Correct 58 ms 32116 KB Output is correct
43 Correct 50 ms 31184 KB Output is correct
44 Correct 59 ms 31692 KB Output is correct
45 Correct 53 ms 31684 KB Output is correct
46 Correct 56 ms 37316 KB Output is correct
47 Correct 68 ms 32204 KB Output is correct
48 Correct 12 ms 12572 KB Output is correct
49 Correct 102 ms 34284 KB Output is correct
50 Correct 105 ms 34768 KB Output is correct
51 Correct 102 ms 34604 KB Output is correct
52 Correct 105 ms 34640 KB Output is correct
53 Correct 102 ms 34164 KB Output is correct
54 Correct 90 ms 29164 KB Output is correct
55 Correct 100 ms 34896 KB Output is correct
56 Correct 105 ms 34348 KB Output is correct
57 Correct 118 ms 38704 KB Output is correct
58 Correct 112 ms 35304 KB Output is correct
59 Correct 52 ms 16404 KB Output is correct
60 Correct 110 ms 34380 KB Output is correct
61 Correct 98 ms 34320 KB Output is correct
62 Correct 100 ms 34864 KB Output is correct
63 Correct 134 ms 38956 KB Output is correct
64 Correct 1 ms 10844 KB Output is correct
65 Correct 2 ms 10844 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 3 ms 11100 KB Output is correct
71 Correct 2 ms 11100 KB Output is correct
72 Correct 2 ms 10844 KB Output is correct
73 Correct 2 ms 11100 KB Output is correct
74 Runtime error 32 ms 25944 KB Execution killed with signal 11
75 Halted 0 ms 0 KB -