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Submission #548590

# Submission time Handle Problem Language Result Execution time Memory
548590 2022-04-13T21:25:06 Z Lobo Tropical Garden (IOI11_garden) C++17
100 / 100
 2716 ms 53524 KB 
#include "garden.h"
#include "gardenlib.h"
#include<bits/stdc++.h>
using namespace std;

const long long inf = (long long) 1e18 + 10;
const int inf1 = (int) 1e9 + 10;
#define int long long
#define dbl long double
#define endl '\n'
#define sc second
#define fr first
#define mp make_pair
#define pb push_back
#define all(x) x.begin(), x.end()

const int maxn = 4e5+10;

int n, mark[maxn], p[maxn], ordc[maxn], nx[maxn], disp[maxn], szc[maxn], tin[maxn], tout[maxn], timer;
vector<pair<int,int>> g[maxn];
vector<int> gtr[maxn];

void dfsc(int v, int ini) {
    p[v] = v;
    disp[v] = 0;
    if(nx[v] == ini) {
        szc[mark[v]] = ordc[v]+1;
        return;
    }
    ordc[nx[v]] = ordc[v]+1;
    dfsc(nx[v],ini);
}

void dfs(int v, int cur) {
    mark[v] = cur;
    if(mark[nx[v]] == cur) {
        //temos um ciclo
        ordc[nx[v]] = 0;
        dfsc(nx[v],nx[v]);
        tout[v] = timer;
        return;
    }
    else if(mark[nx[v]] == -1){
        dfs(nx[v],cur);
    }

    if(p[v] == -1) {
        disp[v] = disp[nx[v]]+1;
        gtr[nx[v]].pb(v);
        p[v] = p[nx[v]];
    }
}

void dfstr(int u) {
    tin[u] = timer++;
    for(auto v : gtr[u]) dfstr(v);
    tout[u] = timer;
}


void count_routes(int32_t N, int32_t M, int32_t P, int32_t R[][2], int32_t Q, int32_t G[]) {
    n = N;
    for(int i = 0; i < M; i++) {
        g[R[i][0]].pb(mp(i,R[i][1]));
        g[R[i][1]].pb(mp(i,R[i][0]));
    }


    for(int i = 0; i < 2*n; i++) {
        nx[i] = i;
    }

    for(int i = 0; i < n; i++) {
        sort(all(g[i]));
    }
    for(int i = 0; i < n; i++) {

        nx[i] = g[i][0].sc;
        if(g[nx[i]][0].sc == i)
            nx[i]+= n;

        if(g[i].size() == 1)
            nx[i+n] = g[i][0].sc;
        else
            nx[i+n] = g[i][1].sc;
        if(g[nx[i+n]][0].sc == i)
            nx[i+n]+= n;
    }

    for(int i = 0; i < 2*n; i++) {
        p[i] = -1;
        mark[i] = -1;
        ordc[i] = -1;
    }

    for(int i = 0; i < 2*n; i++) {
        if(mark[i] == -1) {
            dfs(i,i);
        }
    }

    for(int i = 0; i < 2*n; i++) {
        if(p[i] == i) dfstr(i);
    }

    for(int j = 0; j < Q; j++) {
        int ans = 0;
        for(int i = 0; i < n; i++) {

            int k = G[j];
            int v = i;
            if(P != p[P]) {
                if(p[v] == p[P] && tin[P] <= tin[v] && tout[v] <= tout[P] && k == disp[v]-disp[P])
                    ans++; 
            }
            else {
                if(mark[p[v]] == mark[P] && k >= disp[v] && (ordc[p[v]]+k-disp[v])%szc[mark[p[v]]] == ordc[P])
                    ans++;

                //vai k pra frente de 
            }

            P+= n;
            if(P != p[P]) {
                if(p[v] == p[P] && tin[P] <= tin[v] && tout[v] <= tout[P] && k == disp[v]-disp[P])
                    ans++; 
            }
            else {
                if(mark[p[v]] == mark[P] && k >= disp[v] && (ordc[p[v]]+k-disp[v])%szc[mark[p[v]]] == ordc[P])
                    ans++;

                //vai k pra frente de 
            }
            P-= n;


        }
        answer(ans);
        // cout << ans << endl;
    }
}

// int32_t main() {
//     ios::sync_with_stdio(false); cin.tie(0);

//     freopen("in.in", "r", stdin);
//     // freopen("out.out", "w", stdout);
    
//     int32_t N, M, P;
//     cin >> N >> M >> P;
//     int32_t R[M][2];
//     for(int i = 0; i < M; i++) {
//         cin >> R[i][0] >> R[i][1];
//     }
//     int32_t Q; cin >> Q;
//     int32_t G[Q];
//     for(int i = 0; i < Q; i++) {
//         cin >> G[i];
//     }
//     count_routes(N,M,P,R,Q,G);
// }

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19284 KB Output is correct
2 Correct 12 ms 19284 KB Output is correct
3 Correct 11 ms 19412 KB Output is correct
4 Correct 10 ms 19132 KB Output is correct
5 Correct 10 ms 19144 KB Output is correct
6 Correct 10 ms 19412 KB Output is correct
7 Correct 10 ms 19196 KB Output is correct
8 Correct 11 ms 19336 KB Output is correct
9 Correct 15 ms 19668 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19284 KB Output is correct
2 Correct 12 ms 19284 KB Output is correct
3 Correct 11 ms 19412 KB Output is correct
4 Correct 10 ms 19132 KB Output is correct
5 Correct 10 ms 19144 KB Output is correct
6 Correct 10 ms 19412 KB Output is correct
7 Correct 10 ms 19196 KB Output is correct
8 Correct 11 ms 19336 KB Output is correct
9 Correct 15 ms 19668 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 22 ms 23636 KB Output is correct
12 Correct 42 ms 27880 KB Output is correct
13 Correct 48 ms 41036 KB Output is correct
14 Correct 149 ms 47480 KB Output is correct
15 Correct 169 ms 48104 KB Output is correct
16 Correct 124 ms 40720 KB Output is correct
17 Correct 138 ms 38384 KB Output is correct
18 Correct 45 ms 27840 KB Output is correct
19 Correct 164 ms 47544 KB Output is correct
20 Correct 163 ms 48084 KB Output is correct
21 Correct 122 ms 40652 KB Output is correct
22 Correct 123 ms 38284 KB Output is correct
23 Correct 167 ms 49908 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 11 ms 19284 KB Output is correct
2 Correct 12 ms 19284 KB Output is correct
3 Correct 11 ms 19412 KB Output is correct
4 Correct 10 ms 19132 KB Output is correct
5 Correct 10 ms 19144 KB Output is correct
6 Correct 10 ms 19412 KB Output is correct
7 Correct 10 ms 19196 KB Output is correct
8 Correct 11 ms 19336 KB Output is correct
9 Correct 15 ms 19668 KB Output is correct
10 Correct 10 ms 19156 KB Output is correct
11 Correct 22 ms 23636 KB Output is correct
12 Correct 42 ms 27880 KB Output is correct
13 Correct 48 ms 41036 KB Output is correct
14 Correct 149 ms 47480 KB Output is correct
15 Correct 169 ms 48104 KB Output is correct
16 Correct 124 ms 40720 KB Output is correct
17 Correct 138 ms 38384 KB Output is correct
18 Correct 45 ms 27840 KB Output is correct
19 Correct 164 ms 47544 KB Output is correct
20 Correct 163 ms 48084 KB Output is correct
21 Correct 122 ms 40652 KB Output is correct
22 Correct 123 ms 38284 KB Output is correct
23 Correct 167 ms 49908 KB Output is correct
24 Correct 12 ms 19156 KB Output is correct
25 Correct 143 ms 23564 KB Output is correct
26 Correct 208 ms 27992 KB Output is correct
27 Correct 2345 ms 41164 KB Output is correct
28 Correct 1232 ms 47556 KB Output is correct
29 Correct 2698 ms 48144 KB Output is correct
30 Correct 1484 ms 40856 KB Output is correct
31 Correct 1617 ms 38520 KB Output is correct
32 Correct 308 ms 27808 KB Output is correct
33 Correct 1209 ms 49368 KB Output is correct
34 Correct 2716 ms 49912 KB Output is correct
35 Correct 1646 ms 42292 KB Output is correct
36 Correct 1661 ms 40012 KB Output is correct
37 Correct 1038 ms 51852 KB Output is correct
38 Correct 2211 ms 53524 KB Output is correct