oj.uz

Submission #894740

# Submission time Handle Problem Language Result Execution time Memory
894740 2023-12-28T20:32:06 Z ShaShi Swapping Cities (APIO20_swap) C++17
43 / 100
 168 ms 67884 KB 
#include "swap.h"
#include <bits/stdc++.h>
#define F first
#define S second
#define all(x) x.begin(), x.end()
#define kill(x) cout << x << endl, exit(0);
#define pb push_back
#define mp make_pair
#define pii pair<int, int>


using namespace std;
typedef long long ll;
typedef long double ld;


const int MAXN = (int)1e6 + 7;
const int LG = 18;
const int MOD = 998244353;
const int INF = (int)1e18 + 7;



int n, m, t, flag, k, u, v, w, ans, ans2, tmp, tmp2, tmp3, tmp4, q, timer;
int arr[MAXN], num[MAXN];
int par[MAXN], love[MAXN], dp[MAXN], deg[MAXN];
int h[MAXN], dad[MAXN], pow2dad[MAXN][LG];
vector<pair<int, pii> > edge;
vector<int> adj[MAXN];


/* DSU */

inline int get_par(int v) {
    return (par[v] == v? v : par[v] = get_par(par[v]));
}


void unite(int u, int v, int w) {
    int u2, v2;
    u2 = u;
    v2 = v;

    deg[u2]++, deg[v2]++;

    u = get_par(u), v = get_par(v);

    if (u == v) {
        if (!love[u]) {
            love[u] = 1;
            num[u] = w;
        }
    } else {
        par[u] = par[v] = flag;
        par[flag] = flag;
        adj[flag].pb(u), adj[flag].pb(v);
        num[flag] = w;

        if (love[u] || love[v]) {
            love[flag] = 1;
        } else {
            love[flag] = (deg[u2] == 3 || deg[v2] == 3);
        }

        // cout << "@" << flag << " " << u << " " << v << endl;

        flag++;
    }

}

/* DSU */

/* LCA */

inline int up(int v, int k) {
    for (int i=LG-1; i>=0; i--) {
        if ((1<<i) <= k) {
            k -= (1<<i);
            v = pow2dad[v][i];
        }
    }

    return v;
}


int LCA(int u, int v) {
    if (h[u] < h[v]) swap(u, v);

    u = up(u, h[u]-h[v]);

    for (int i=LG-1; i>=0; i--) {
        if (h[v] >= (1<<i) && pow2dad[v][i] != pow2dad[u][i]) {
            v = pow2dad[v][i];
            u = pow2dad[u][i];
        }
    }

    if (u == v) return u;
    return dad[v];
}


/* LCA */


// void DFS(int v) {
//     for (int u:adj[v]) {
//         if (u != dad[v]) {
//             dad[u] = v;
//             h[u] = h[v]+1;
//             DFS(u);

//             love[v] |= love[u];
//         }
//     }

//     dp[v] = (love[v]? v : dp[dad[v]]);
// }

void DFS(int v) {
    dp[v] = (love[v]? v : dp[dad[v]]);

    for (int u:adj[v]) {
        if (u != dad[v]) {
            dad[u] = v;
            h[u] = h[v]+1;
            DFS(u);
        }
    }
}



void DFS2(int v) {
    dp[v] = (love[v]? v : dp[dad[v]]);

    for (int u:adj[v]) if (u != dad[v]) DFS2(u);
}


void init(int N, int M, vector<int> U, vector<int> V, vector<int> W) {
	n = N;
	m = M;

	for (int i=0; i<m; i++) {
        // cin >> u >> v >> w;
		u = U[i];
		v = V[i];
		w = W[i];

        edge.pb(mp(w, mp(u, v)));
    }

    sort(all(edge));
    flag = n+1;

    for (int i=1; i<=n; i++) par[i] = i;
    
    for (int i=0; i<m; i++) unite(edge[i].S.F, edge[i].S.S, edge[i].F);
    flag--;

    DFS(flag);
    // DFS2(flag);

    for (int i=1; i<=flag; i++) pow2dad[i][0] = dad[i];
    for (int j=1; j<LG; j++) for (int i=1; i<=flag; i++) pow2dad[i][j] = pow2dad[pow2dad[i][j-1]][j-1];
    num[0]--;
}

int getMinimumFuelCapacity(int X, int Y) {
	return num[dp[LCA(X, Y)]];
}

Subtask #1
6.0 / 6.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Correct 7 ms 31324 KB Output is correct
4 Correct 7 ms 31324 KB Output is correct
5 Correct 7 ms 31356 KB Output is correct
6 Correct 7 ms 31324 KB Output is correct
7 Correct 7 ms 31324 KB Output is correct
8 Correct 7 ms 31324 KB Output is correct
9 Correct 51 ms 50372 KB Output is correct
10 Correct 72 ms 55936 KB Output is correct
11 Correct 61 ms 55772 KB Output is correct
12 Correct 64 ms 58568 KB Output is correct
13 Correct 60 ms 61704 KB Output is correct
14 Correct 56 ms 50888 KB Output is correct
15 Correct 121 ms 61628 KB Output is correct
16 Correct 123 ms 59236 KB Output is correct
17 Correct 126 ms 62084 KB Output is correct
18 Correct 161 ms 65124 KB Output is correct
19 Correct 67 ms 41908 KB Output is correct
20 Correct 123 ms 64128 KB Output is correct
21 Correct 119 ms 61824 KB Output is correct
22 Correct 128 ms 64876 KB Output is correct
23 Correct 168 ms 67884 KB Output is correct

Subtask #2
0 / 7.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Incorrect 143 ms 67220 KB Output isn't correct
4 Halted 0 ms 0 KB -

Subtask #3
17.0 / 17.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Correct 7 ms 31324 KB Output is correct
4 Correct 7 ms 31324 KB Output is correct
5 Correct 7 ms 31356 KB Output is correct
6 Correct 7 ms 31324 KB Output is correct
7 Correct 7 ms 31324 KB Output is correct
8 Correct 7 ms 31324 KB Output is correct
9 Correct 8 ms 33372 KB Output is correct
10 Correct 7 ms 33372 KB Output is correct
11 Correct 7 ms 33372 KB Output is correct
12 Correct 7 ms 33372 KB Output is correct
13 Correct 7 ms 33372 KB Output is correct
14 Correct 7 ms 33372 KB Output is correct
15 Correct 8 ms 33372 KB Output is correct
16 Correct 7 ms 33440 KB Output is correct
17 Correct 8 ms 33488 KB Output is correct
18 Correct 7 ms 33372 KB Output is correct
19 Correct 7 ms 33372 KB Output is correct
20 Correct 8 ms 33372 KB Output is correct
21 Correct 7 ms 33372 KB Output is correct
22 Correct 7 ms 33372 KB Output is correct
23 Correct 7 ms 33372 KB Output is correct
24 Correct 8 ms 33372 KB Output is correct
25 Correct 7 ms 33480 KB Output is correct
26 Correct 7 ms 33412 KB Output is correct
27 Correct 8 ms 33372 KB Output is correct
28 Correct 8 ms 33628 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 33372 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 7 ms 31324 KB Output is correct
5 Correct 7 ms 31324 KB Output is correct
6 Correct 7 ms 31356 KB Output is correct
7 Correct 7 ms 31324 KB Output is correct
8 Correct 7 ms 31324 KB Output is correct
9 Correct 7 ms 31324 KB Output is correct
10 Correct 51 ms 50372 KB Output is correct
11 Correct 72 ms 55936 KB Output is correct
12 Correct 61 ms 55772 KB Output is correct
13 Correct 64 ms 58568 KB Output is correct
14 Correct 60 ms 61704 KB Output is correct
15 Correct 7 ms 33372 KB Output is correct
16 Correct 7 ms 33372 KB Output is correct
17 Correct 7 ms 33372 KB Output is correct
18 Correct 7 ms 33372 KB Output is correct
19 Correct 7 ms 33372 KB Output is correct
20 Correct 8 ms 33372 KB Output is correct
21 Correct 7 ms 33440 KB Output is correct
22 Correct 8 ms 33488 KB Output is correct
23 Correct 7 ms 33372 KB Output is correct
24 Correct 7 ms 33372 KB Output is correct
25 Correct 8 ms 33372 KB Output is correct
26 Correct 7 ms 33372 KB Output is correct
27 Correct 7 ms 33372 KB Output is correct
28 Correct 7 ms 33372 KB Output is correct
29 Correct 8 ms 33372 KB Output is correct
30 Correct 7 ms 33480 KB Output is correct
31 Correct 7 ms 33412 KB Output is correct
32 Correct 8 ms 33372 KB Output is correct
33 Correct 8 ms 33628 KB Output is correct
34 Correct 14 ms 36964 KB Output is correct
35 Correct 71 ms 59636 KB Output is correct
36 Correct 64 ms 59848 KB Output is correct
37 Correct 73 ms 59520 KB Output is correct
38 Correct 64 ms 59528 KB Output is correct
39 Correct 64 ms 59084 KB Output is correct
40 Correct 58 ms 56260 KB Output is correct
41 Correct 66 ms 59848 KB Output is correct
42 Correct 63 ms 59792 KB Output is correct
43 Correct 60 ms 63688 KB Output is correct
44 Correct 71 ms 60032 KB Output is correct
45 Correct 78 ms 57028 KB Output is correct
46 Correct 62 ms 59588 KB Output is correct
47 Correct 65 ms 59624 KB Output is correct
48 Correct 71 ms 61384 KB Output is correct
49 Correct 58 ms 41484 KB Output is correct
50 Correct 50 ms 40480 KB Output is correct
51 Correct 66 ms 52936 KB Output is correct
52 Correct 93 ms 63936 KB Output is correct
53 Correct 99 ms 64560 KB Output is correct
54 Correct 98 ms 65052 KB Output is correct
55 Correct 60 ms 63176 KB Output is correct
56 Correct 110 ms 65212 KB Output is correct

Subtask #5
0 / 23.0

# Verdict Execution time Memory Grader output
1 Correct 6 ms 31324 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Correct 7 ms 31324 KB Output is correct
4 Correct 7 ms 31324 KB Output is correct
5 Correct 7 ms 31356 KB Output is correct
6 Correct 7 ms 31324 KB Output is correct
7 Correct 7 ms 31324 KB Output is correct
8 Correct 7 ms 31324 KB Output is correct
9 Correct 51 ms 50372 KB Output is correct
10 Correct 72 ms 55936 KB Output is correct
11 Correct 61 ms 55772 KB Output is correct
12 Correct 64 ms 58568 KB Output is correct
13 Correct 60 ms 61704 KB Output is correct
14 Correct 56 ms 50888 KB Output is correct
15 Correct 121 ms 61628 KB Output is correct
16 Correct 123 ms 59236 KB Output is correct
17 Correct 126 ms 62084 KB Output is correct
18 Correct 161 ms 65124 KB Output is correct
19 Incorrect 143 ms 67220 KB Output isn't correct
20 Halted 0 ms 0 KB -

Subtask #6
0 / 27.0

# Verdict Execution time Memory Grader output
1 Correct 8 ms 33372 KB Output is correct
2 Correct 6 ms 31324 KB Output is correct
3 Correct 6 ms 31324 KB Output is correct
4 Correct 7 ms 31324 KB Output is correct
5 Correct 7 ms 31324 KB Output is correct
6 Correct 7 ms 31356 KB Output is correct
7 Correct 7 ms 31324 KB Output is correct
8 Correct 7 ms 31324 KB Output is correct
9 Correct 7 ms 31324 KB Output is correct
10 Correct 51 ms 50372 KB Output is correct
11 Correct 72 ms 55936 KB Output is correct
12 Correct 61 ms 55772 KB Output is correct
13 Correct 64 ms 58568 KB Output is correct
14 Correct 60 ms 61704 KB Output is correct
15 Correct 56 ms 50888 KB Output is correct
16 Correct 121 ms 61628 KB Output is correct
17 Correct 123 ms 59236 KB Output is correct
18 Correct 126 ms 62084 KB Output is correct
19 Correct 161 ms 65124 KB Output is correct
20 Incorrect 143 ms 67220 KB Output isn't correct
21 Halted 0 ms 0 KB -