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Submission #1047173

# Submission time Handle Problem Language Result Execution time Memory
1047173 2024-08-07T09:55:47 Z KasymK Swapping Cities (APIO20_swap) C++17
53 / 100
 123 ms 42900 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], 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;
    if(dp[ad]-N-1 <= 0)
        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 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10840 KB Output is correct
8 Correct 2 ms 10856 KB Output is correct
9 Correct 42 ms 28228 KB Output is correct
10 Correct 54 ms 31556 KB Output is correct
11 Correct 52 ms 31312 KB Output is correct
12 Correct 56 ms 31708 KB Output is correct
13 Correct 54 ms 35780 KB Output is correct
14 Correct 45 ms 28368 KB Output is correct
15 Correct 98 ms 33284 KB Output is correct
16 Correct 93 ms 33144 KB Output is correct
17 Correct 99 ms 33568 KB Output is correct
18 Correct 122 ms 37416 KB Output is correct
19 Correct 44 ms 16404 KB Output is correct
20 Correct 95 ms 34376 KB Output is correct
21 Correct 96 ms 34428 KB Output is correct
22 Correct 101 ms 34864 KB Output is correct
23 Correct 123 ms 38952 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 111 ms 42092 KB Output is correct
4 Correct 104 ms 42900 KB Output is correct
5 Correct 105 ms 42588 KB Output is correct
6 Correct 101 ms 42796 KB Output is correct
7 Correct 106 ms 42824 KB Output is correct
8 Correct 103 ms 42100 KB Output is correct
9 Correct 102 ms 42472 KB Output is correct
10 Correct 104 ms 41860 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 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10840 KB Output is correct
8 Correct 2 ms 10856 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 10852 KB Output is correct
12 Correct 1 ms 10876 KB Output is correct
13 Correct 2 ms 10840 KB Output is correct
14 Correct 2 ms 10844 KB Output is correct
15 Correct 2 ms 10844 KB Output is correct
16 Correct 3 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 1 ms 10844 KB Output is correct
21 Correct 2 ms 10844 KB Output is correct
22 Correct 2 ms 11096 KB Output is correct
23 Correct 1 ms 10844 KB Output is correct
24 Correct 2 ms 11100 KB Output is correct
25 Correct 2 ms 11100 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 11096 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 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 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10856 KB Output is correct
10 Correct 42 ms 28228 KB Output is correct
11 Correct 54 ms 31556 KB Output is correct
12 Correct 52 ms 31312 KB Output is correct
13 Correct 56 ms 31708 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 10852 KB Output is correct
17 Correct 1 ms 10876 KB Output is correct
18 Correct 2 ms 10840 KB Output is correct
19 Correct 2 ms 10844 KB Output is correct
20 Correct 2 ms 10844 KB Output is correct
21 Correct 3 ms 10844 KB Output is correct
22 Correct 1 ms 10844 KB Output is correct
23 Correct 1 ms 10844 KB Output is correct
24 Correct 1 ms 10844 KB Output is correct
25 Correct 1 ms 10844 KB Output is correct
26 Correct 2 ms 10844 KB Output is correct
27 Correct 2 ms 11096 KB Output is correct
28 Correct 1 ms 10844 KB Output is correct
29 Correct 2 ms 11100 KB Output is correct
30 Correct 2 ms 11100 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 11096 KB Output is correct
34 Correct 8 ms 12572 KB Output is correct
35 Correct 60 ms 31952 KB Output is correct
36 Correct 63 ms 31888 KB Output is correct
37 Correct 60 ms 31952 KB Output is correct
38 Correct 54 ms 31944 KB Output is correct
39 Correct 69 ms 31896 KB Output is correct
40 Correct 49 ms 31184 KB Output is correct
41 Correct 57 ms 31688 KB Output is correct
42 Correct 57 ms 31892 KB Output is correct
43 Correct 53 ms 37316 KB Output is correct
44 Correct 56 ms 32192 KB Output is correct
45 Runtime error 30 ms 25936 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 2 ms 10844 KB Output is correct
5 Correct 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10840 KB Output is correct
8 Correct 2 ms 10856 KB Output is correct
9 Correct 42 ms 28228 KB Output is correct
10 Correct 54 ms 31556 KB Output is correct
11 Correct 52 ms 31312 KB Output is correct
12 Correct 56 ms 31708 KB Output is correct
13 Correct 54 ms 35780 KB Output is correct
14 Correct 45 ms 28368 KB Output is correct
15 Correct 98 ms 33284 KB Output is correct
16 Correct 93 ms 33144 KB Output is correct
17 Correct 99 ms 33568 KB Output is correct
18 Correct 122 ms 37416 KB Output is correct
19 Correct 111 ms 42092 KB Output is correct
20 Correct 104 ms 42900 KB Output is correct
21 Correct 105 ms 42588 KB Output is correct
22 Correct 101 ms 42796 KB Output is correct
23 Correct 106 ms 42824 KB Output is correct
24 Correct 103 ms 42100 KB Output is correct
25 Correct 102 ms 42472 KB Output is correct
26 Correct 104 ms 41860 KB Output is correct
27 Correct 2 ms 10844 KB Output is correct
28 Correct 1 ms 10852 KB Output is correct
29 Correct 1 ms 10876 KB Output is correct
30 Correct 2 ms 10840 KB Output is correct
31 Correct 2 ms 10844 KB Output is correct
32 Correct 2 ms 10844 KB Output is correct
33 Correct 3 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 8 ms 12572 KB Output is correct
37 Correct 60 ms 31952 KB Output is correct
38 Correct 63 ms 31888 KB Output is correct
39 Correct 60 ms 31952 KB Output is correct
40 Correct 54 ms 31944 KB Output is correct
41 Correct 69 ms 31896 KB Output is correct
42 Correct 49 ms 31184 KB Output is correct
43 Correct 57 ms 31688 KB Output is correct
44 Correct 57 ms 31892 KB Output is correct
45 Correct 53 ms 37316 KB Output is correct
46 Correct 56 ms 32192 KB Output is correct
47 Correct 18 ms 12568 KB Output is correct
48 Correct 103 ms 34348 KB Output is correct
49 Correct 104 ms 34580 KB Output is correct
50 Correct 101 ms 34608 KB Output is correct
51 Correct 120 ms 34616 KB Output is correct
52 Correct 113 ms 34168 KB Output is correct
53 Correct 93 ms 28948 KB Output is correct
54 Correct 102 ms 34864 KB Output is correct
55 Correct 104 ms 34340 KB Output is correct
56 Correct 120 ms 38704 KB Output is correct
57 Correct 106 ms 35376 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 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 2 ms 10844 KB Output is correct
6 Correct 2 ms 10844 KB Output is correct
7 Correct 2 ms 10844 KB Output is correct
8 Correct 2 ms 10840 KB Output is correct
9 Correct 2 ms 10856 KB Output is correct
10 Correct 42 ms 28228 KB Output is correct
11 Correct 54 ms 31556 KB Output is correct
12 Correct 52 ms 31312 KB Output is correct
13 Correct 56 ms 31708 KB Output is correct
14 Correct 54 ms 35780 KB Output is correct
15 Correct 45 ms 28368 KB Output is correct
16 Correct 98 ms 33284 KB Output is correct
17 Correct 93 ms 33144 KB Output is correct
18 Correct 99 ms 33568 KB Output is correct
19 Correct 122 ms 37416 KB Output is correct
20 Correct 111 ms 42092 KB Output is correct
21 Correct 104 ms 42900 KB Output is correct
22 Correct 105 ms 42588 KB Output is correct
23 Correct 101 ms 42796 KB Output is correct
24 Correct 106 ms 42824 KB Output is correct
25 Correct 103 ms 42100 KB Output is correct
26 Correct 102 ms 42472 KB Output is correct
27 Correct 104 ms 41860 KB Output is correct
28 Correct 2 ms 10844 KB Output is correct
29 Correct 1 ms 10852 KB Output is correct
30 Correct 1 ms 10876 KB Output is correct
31 Correct 2 ms 10840 KB Output is correct
32 Correct 2 ms 10844 KB Output is correct
33 Correct 2 ms 10844 KB Output is correct
34 Correct 3 ms 10844 KB Output is correct
35 Correct 1 ms 10844 KB Output is correct
36 Correct 1 ms 10844 KB Output is correct
37 Correct 8 ms 12572 KB Output is correct
38 Correct 60 ms 31952 KB Output is correct
39 Correct 63 ms 31888 KB Output is correct
40 Correct 60 ms 31952 KB Output is correct
41 Correct 54 ms 31944 KB Output is correct
42 Correct 69 ms 31896 KB Output is correct
43 Correct 49 ms 31184 KB Output is correct
44 Correct 57 ms 31688 KB Output is correct
45 Correct 57 ms 31892 KB Output is correct
46 Correct 53 ms 37316 KB Output is correct
47 Correct 56 ms 32192 KB Output is correct
48 Correct 18 ms 12568 KB Output is correct
49 Correct 103 ms 34348 KB Output is correct
50 Correct 104 ms 34580 KB Output is correct
51 Correct 101 ms 34608 KB Output is correct
52 Correct 120 ms 34616 KB Output is correct
53 Correct 113 ms 34168 KB Output is correct
54 Correct 93 ms 28948 KB Output is correct
55 Correct 102 ms 34864 KB Output is correct
56 Correct 104 ms 34340 KB Output is correct
57 Correct 120 ms 38704 KB Output is correct
58 Correct 106 ms 35376 KB Output is correct
59 Correct 44 ms 16404 KB Output is correct
60 Correct 95 ms 34376 KB Output is correct
61 Correct 96 ms 34428 KB Output is correct
62 Correct 101 ms 34864 KB Output is correct
63 Correct 123 ms 38952 KB Output is correct
64 Correct 1 ms 10844 KB Output is correct
65 Correct 1 ms 10844 KB Output is correct
66 Correct 2 ms 10844 KB Output is correct
67 Correct 2 ms 11096 KB Output is correct
68 Correct 1 ms 10844 KB Output is correct
69 Correct 2 ms 11100 KB Output is correct
70 Correct 2 ms 11100 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 11096 KB Output is correct
74 Runtime error 30 ms 25936 KB Execution killed with signal 11
75 Halted 0 ms 0 KB -