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Submission #1092986

# Submission time Handle Problem Language Result Execution time Memory
1092986 2024-09-25T15:07:46 Z Aviansh Tropical Garden (IOI11_garden) C++17
100 / 100
 1252 ms 23100 KB 
#include <bits/stdc++.h>
#include "garden.h"
#include "gardenlib.h"

using namespace std;

void dfs(int st, int dep, vector<int>(&g)[], int f[], int t, int n){
    f[st]=dep;
    for(int i : g[st]){
        if(i==t){
            f[t]=dep+1;
            continue;
        }
        if(i==st+n||i==st-n){
            dfs(i,dep,g,f,t, n);
            continue;
        }
        dfs(i,dep+1,g,f,t, n);
    }
}

void count_routes(int n, int m, int t, int edges[][2], int q, int G[])
{
    vector<int>g[2*n];
    int cn[n];
    fill(cn,cn+n,0);
    for(int i = 0;i<m;i++){
        int u1=edges[i][0];
        int v1=edges[i][1];
        if(cn[u1]>cn[v1]){
            swap(u1,v1);
        }
        int u2 = u1+n;
        int v2 = v1+n;
        if(cn[u1]==0&&cn[v1]==0){
            g[v2].push_back(u1);
            g[u2].push_back(v1);
        }
        else if(cn[u1]==0&&cn[v1]==1){
            g[v1].push_back(u1);
            g[u2].push_back(v2);
        }
        else if(cn[u1]==0&&cn[v1]>1){
            g[v1].push_back(u1);
        }
        else if(cn[u1]==1&&cn[v1]==1){
            g[v1].push_back(u2);
            g[u1].push_back(v2);
        }
        else if(cn[u1]==1&&cn[v1]>1){
            g[v1].push_back(u2);
        }
        cn[u1]++;
        cn[v1]++;
    }
    for(int i = 0;i<n;i++){
        if(cn[i]==1){
            g[i].push_back(i+n);
        }
    }    int f1[2*n];
    fill(f1,f1+2*n,-1);
    queue<pair<int,int>>qu;
    qu.push({t,0});
    while(!qu.empty()){
        pair<int,int>p=qu.front();
        qu.pop();
        f1[p.first]=p.second;
        //cout << p.first << " " << f1[p.first] << "\n";
        if(p.first==t&&p.second!=0)
            continue;
        for(int v : g[p.first]){
            if(v==p.first+n||v==p.first-n){
                qu.push({v,p.second});
                continue;
            }
            qu.push({v,p.second+1});
        }
    }
    //dfs(t,0,g,f1,t,-1, n);
    int f2[2*n];
    fill(f2,f2+2*n,-1);
    qu.push({n+t,0});
    while(!qu.empty()){
        pair<int,int>p=qu.front();
        qu.pop();
        f2[p.first]=p.second;
        //cout << p.first << " " << f2[p.first] << "\n";
        if(p.first==n+t&&p.second!=0)
            continue;
        for(int v : g[p.first]){
            if(v==p.first+n||v==p.first-n){
                qu.push({v,p.second});
                continue;
            }
            qu.push({v,p.second+1});
        }
    }
    //dfs(t+n,0,g,f2,t+n,-1, n);
    auto t1 = [&] (int u, int D) -> bool{
        if(f1[u]==-1) return 0;
        if(f1[u]==D) return 1;
        if(f1[u]>D) return 0;
        return f1[t] && (D-f1[u])%f1[t]==0;
    };

    auto t2 = [&] (int u, int D) -> bool{
        if(f2[u]==-1) return 0;
        if(f2[u]==D) return 1;
        if(f2[u]>D) return 0;
        return f2[t+n] && (D-f2[u])%f2[t+n]==0;
    };
    for(int i = 0;i<q;i++){
        int ans = 0;
        for(int j = 0;j<n;j++){
            //cout << f1[j] << " " << f2[j] << "\n";
            if(t1(j,G[i])||t2(j,G[i])){
                ans++;
            }
        }
        answer(ans);
    }
}

Subtask #1
49.0 / 49.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 1 ms 604 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 6 ms 3784 KB Output is correct
12 Correct 13 ms 5444 KB Output is correct
13 Correct 25 ms 13040 KB Output is correct
14 Correct 43 ms 18428 KB Output is correct
15 Correct 55 ms 18652 KB Output is correct
16 Correct 39 ms 12884 KB Output is correct
17 Correct 35 ms 11356 KB Output is correct
18 Correct 13 ms 5468 KB Output is correct
19 Correct 42 ms 18524 KB Output is correct
20 Correct 52 ms 18660 KB Output is correct
21 Correct 37 ms 12744 KB Output is correct
22 Correct 36 ms 11344 KB Output is correct
23 Correct 44 ms 20304 KB Output is correct

Subtask #3
31.0 / 31.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 1 ms 348 KB Output is correct
3 Correct 1 ms 348 KB Output is correct
4 Correct 0 ms 348 KB Output is correct
5 Correct 0 ms 348 KB Output is correct
6 Correct 1 ms 604 KB Output is correct
7 Correct 0 ms 348 KB Output is correct
8 Correct 1 ms 448 KB Output is correct
9 Correct 1 ms 604 KB Output is correct
10 Correct 1 ms 348 KB Output is correct
11 Correct 6 ms 3784 KB Output is correct
12 Correct 13 ms 5444 KB Output is correct
13 Correct 25 ms 13040 KB Output is correct
14 Correct 43 ms 18428 KB Output is correct
15 Correct 55 ms 18652 KB Output is correct
16 Correct 39 ms 12884 KB Output is correct
17 Correct 35 ms 11356 KB Output is correct
18 Correct 13 ms 5468 KB Output is correct
19 Correct 42 ms 18524 KB Output is correct
20 Correct 52 ms 18660 KB Output is correct
21 Correct 37 ms 12744 KB Output is correct
22 Correct 36 ms 11344 KB Output is correct
23 Correct 44 ms 20304 KB Output is correct
24 Correct 1 ms 348 KB Output is correct
25 Correct 63 ms 3420 KB Output is correct
26 Correct 99 ms 5432 KB Output is correct
27 Correct 700 ms 13108 KB Output is correct
28 Correct 695 ms 18512 KB Output is correct
29 Correct 780 ms 18884 KB Output is correct
30 Correct 397 ms 13020 KB Output is correct
31 Correct 434 ms 11180 KB Output is correct
32 Correct 105 ms 5572 KB Output is correct
33 Correct 713 ms 18724 KB Output is correct
34 Correct 766 ms 18772 KB Output is correct
35 Correct 434 ms 12884 KB Output is correct
36 Correct 797 ms 11232 KB Output is correct
37 Correct 528 ms 20308 KB Output is correct
38 Correct 1252 ms 23100 KB Output is correct