oj.uz

Submission #716920

# Submission time Handle Problem Language Result Execution time Memory
716920 2023-03-31T11:55:11 Z Jarif_Rahman Tropical Garden (IOI11_garden) C++17
100 / 100
 2341 ms 56500 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
#define pb push_back
#define f first
#define sc second
using namespace std;
typedef long long int ll;
typedef string str;

int n, m, q, P;
vector<vector<int>> R;

vector<int> succ;
vector<int> cnt;
vector<int> mx, smx;
vector<int> state;
vector<int> cycle_nodes;

vector<vector<pair<int, int>>> cycle_p;
vector<vector<int>> path_p;

int node(int e){ return e < m ? R[e][0]:R[e-m][1]; };

void dfs(int nd){
    if(state[nd] > 0){
        if(state[nd] == 1) cycle_nodes.pb(nd);
        return;
    }
    state[nd] = 1;
    dfs(succ[nd]);
    state[nd] = 2;
}
void dfs2(int nd){
    if(state[nd]) return;
    state[nd] = 1;
    dfs2(succ[nd]);

    if(node(nd) == P) path_p[nd].pb(0);
    for(int x: path_p[succ[nd]]) path_p[nd].pb(x+1);
    for(auto [a, b]: cycle_p[succ[nd]]) cycle_p[nd].pb({a+1, b});
}

void count_routes(int _n, int _m, int _P, int _R[][2], int _q, int G[]){
    swap(n, _n), swap(m, _m), swap(P, _P), swap(q, _q);
    for(int i = 0; i < m; i++) R.pb({_R[i][0], _R[i][1]});

    succ.resize(2*m);
    cnt.assign(n+1, 0);
    mx.assign(n, -1), smx.assign(n, -1);

    for(int i = 0; i < m; i++){
        if(i < mx[R[i][0]]%m || mx[R[i][0]] == -1) smx[R[i][0]] = mx[R[i][0]], mx[R[i][0]] = i+m;
        else if(i < smx[R[i][0]]%m || smx[R[i][0]] == -1) smx[R[i][0]] = i+m;
        if(i < mx[R[i][1]]%m || mx[R[i][1]] == -1) smx[R[i][1]] = mx[R[i][1]], mx[R[i][1]] = i;
        else if(i < smx[R[i][1]]%m || smx[R[i][1]] == -1) smx[R[i][1]] = i;
    }

    for(int i = 0; i < n; i++) if(smx[i] == -1) smx[i] = mx[i];
    for(int i = 0; i < m; i++) succ[i] = (mx[R[i][0]]%m != i ? mx[R[i][0]]:smx[R[i][0]]);
    for(int i = m; i < 2*m; i++) succ[i] = (mx[R[i-m][1]]%m != i-m ? mx[R[i-m][1]]:smx[R[i-m][1]]);

    state.assign(2*m, 0);
    for(int i = 0; i < n; i++) dfs(mx[i]);

    cycle_p.resize(2*m);
    path_p.resize(2*m);
    state.assign(2*m, 0);


    for(int nd: cycle_nodes){
        int ln = 1;
        if(node(nd) == P) cycle_p[nd].pb({0, -1});
        int x = succ[nd];
        while(x != nd){
            if(node(x) == P) cycle_p[nd].pb({ln, -1});
            ln++;
            x = succ[x];
        }
        for(auto &[a, b]: cycle_p[nd]) b = ln;
        state[nd] = 1;
    }

    for(int i = 0; i < n; i++) dfs2(mx[i]);
    vector<pair<int, int>> op;
    for(int i = 0; i < n; i++){
        for(int x: path_p[mx[i]]) cnt[x+1]++;
        for(auto [a, b]: cycle_p[mx[i]]) op.pb({a+1, b});
    }

    for(int i = 0; i < q; i++){
        int ans = 0;
        if(G[i] <= n) ans+=cnt[G[i]];
        for(auto [a, b]: op) if(a <= G[i] && (G[i]-a)%b == 0) ans++;
        answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 700 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 3 ms 1748 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 700 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 3 ms 1748 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 9 ms 4756 KB Output is correct
12 Correct 21 ms 10008 KB Output is correct
13 Correct 48 ms 30080 KB Output is correct
14 Correct 65 ms 28404 KB Output is correct
15 Correct 85 ms 38136 KB Output is correct
16 Correct 69 ms 32364 KB Output is correct
17 Correct 59 ms 29448 KB Output is correct
18 Correct 19 ms 9856 KB Output is correct
19 Correct 60 ms 28168 KB Output is correct
20 Correct 88 ms 37868 KB Output is correct
21 Correct 88 ms 33004 KB Output is correct
22 Correct 84 ms 30672 KB Output is correct
23 Correct 60 ms 29172 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 468 KB Output is correct
2 Correct 1 ms 468 KB Output is correct
3 Correct 1 ms 468 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 2 ms 700 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 468 KB Output is correct
9 Correct 3 ms 1748 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 9 ms 4756 KB Output is correct
12 Correct 21 ms 10008 KB Output is correct
13 Correct 48 ms 30080 KB Output is correct
14 Correct 65 ms 28404 KB Output is correct
15 Correct 85 ms 38136 KB Output is correct
16 Correct 69 ms 32364 KB Output is correct
17 Correct 59 ms 29448 KB Output is correct
18 Correct 19 ms 9856 KB Output is correct
19 Correct 60 ms 28168 KB Output is correct
20 Correct 88 ms 37868 KB Output is correct
21 Correct 88 ms 33004 KB Output is correct
22 Correct 84 ms 30672 KB Output is correct
23 Correct 60 ms 29172 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 34 ms 4880 KB Output is correct
26 Correct 29 ms 10016 KB Output is correct
27 Correct 2160 ms 30120 KB Output is correct
28 Correct 454 ms 29944 KB Output is correct
29 Correct 2335 ms 40172 KB Output is correct
30 Correct 1360 ms 33948 KB Output is correct
31 Correct 1325 ms 31052 KB Output is correct
32 Correct 21 ms 10472 KB Output is correct
33 Correct 457 ms 30064 KB Output is correct
34 Correct 2341 ms 39828 KB Output is correct
35 Correct 1491 ms 33588 KB Output is correct
36 Correct 1355 ms 32436 KB Output is correct
37 Correct 264 ms 30828 KB Output is correct
38 Correct 2039 ms 56500 KB Output is correct