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답안 #998469

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
998469 2024-06-14T03:15:47 Z bachhoangxuan 열대 식물원 (Tropical Garden) (IOI11_garden) C++17
100 / 100
 60 ms 27260 KB 
#include "garden.h"
#include "gardenlib.h"
#include<bits/stdc++.h>
using namespace std;
const int maxn = 150005;
int f[maxn],g[maxn][2],cnt;
int nxt[2*maxn],num[2*maxn],dist[2*maxn],total[2*maxn];
bool vis[2*maxn];
vector<int> edge[2*maxn];

void count_routes(int N, int M, int P, int R[][2], int Q, int G[])
{
    for(int i=0;i<M;i++){
        int u=R[i][0],v=R[i][1];
        int a=(f[u]!=0),b=(f[v]!=0);
        if(!g[u][a]) g[u][a]=++cnt;
        if(!g[v][b]) g[v][b]=++cnt;
        if(!f[u]) f[u]=g[v][b];
        else if(f[u]!=-1){
            nxt[g[u][a]]=f[u];
            nxt[g[u][0]]=g[v][b];
            f[u]=-1;
        }
        if(!f[v]) f[v]=g[u][a];
        else if(f[v]!=-1){
            nxt[g[v][b]]=f[v];
            nxt[g[v][0]]=g[u][a];
            f[v]=-1;
        }
    }
    for(int v=0;v<N;v++){
        if(f[v]>0) nxt[g[v][0]]=f[v],num[g[v][0]]++;
        else if(f[v]==-1) num[g[v][1]]++;
        //for(int j=0;j<2;j++) if(g[v][j]) cout << v << ' ' << j << ' ' << g[v][j] << ' ' << nxt[g[v][j]] << '\n';
    }
    auto cal = [&](int x){
        if(!x) return vector<int>(Q,0);
        for(int i=0;i<=cnt;i++){
            vis[i]=false;
            edge[i].clear();
            total[i]=0;
        }
        int u=x;
        vector<int> cycle;
        while(!vis[u]){
            cycle.push_back(u);
            vis[u]=true,u=nxt[u];
        }
        for(int i=1;i<=cnt;i++) if(!vis[i]) edge[nxt[i]].push_back(i);
        int sz=(int)cycle.size();
        function<void(int)> dfs = [&](int v){
            total[dist[v]]+=num[v];
            for(int k:edge[v]){
                dist[k]=dist[v]+1;
                dfs(k);
            }
        };
        dist[x]=0;dfs(x);
        if(u==x){
            for(int i=1;i<(int)cycle.size();i++){
                dist[cycle[i]]=sz-i;
                dfs(cycle[i]);
            }
            for(int i=sz;i<=cnt;i++) total[i]+=total[i-sz];
        }
        vector<int> res(Q);
        for(int i=0;i<Q;i++){
            if(G[i]<=cnt) res[i]=total[G[i]];
            else if(u==x){
                int d=G[i]%sz;
                d=((cnt-d)/sz)*sz+d;
                res[i]=total[d];
            }
        }
        return res;
    };
    vector<int> a=cal(g[P][0]),b=cal(g[P][1]);
    for(int i=0;i<Q;i++) answer(a[i]+b[i]);
}

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9052 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 3 ms 7516 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 3 ms 7764 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 2 ms 8924 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9052 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 3 ms 7516 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 3 ms 7764 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 2 ms 8924 KB Output is correct
10 Correct 3 ms 7516 KB Output is correct
11 Correct 7 ms 9560 KB Output is correct
12 Correct 16 ms 11356 KB Output is correct
13 Correct 20 ms 14688 KB Output is correct
14 Correct 41 ms 19536 KB Output is correct
15 Correct 47 ms 20052 KB Output is correct
16 Correct 39 ms 17748 KB Output is correct
17 Correct 35 ms 16728 KB Output is correct
18 Correct 12 ms 12380 KB Output is correct
19 Correct 38 ms 20064 KB Output is correct
20 Correct 44 ms 20264 KB Output is correct
21 Correct 37 ms 17748 KB Output is correct
22 Correct 37 ms 16732 KB Output is correct
23 Correct 37 ms 20904 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 2 ms 9052 KB Output is correct
2 Correct 2 ms 8796 KB Output is correct
3 Correct 3 ms 7516 KB Output is correct
4 Correct 3 ms 7516 KB Output is correct
5 Correct 3 ms 7516 KB Output is correct
6 Correct 3 ms 7764 KB Output is correct
7 Correct 2 ms 8796 KB Output is correct
8 Correct 3 ms 7516 KB Output is correct
9 Correct 2 ms 8924 KB Output is correct
10 Correct 3 ms 7516 KB Output is correct
11 Correct 7 ms 9560 KB Output is correct
12 Correct 16 ms 11356 KB Output is correct
13 Correct 20 ms 14688 KB Output is correct
14 Correct 41 ms 19536 KB Output is correct
15 Correct 47 ms 20052 KB Output is correct
16 Correct 39 ms 17748 KB Output is correct
17 Correct 35 ms 16728 KB Output is correct
18 Correct 12 ms 12380 KB Output is correct
19 Correct 38 ms 20064 KB Output is correct
20 Correct 44 ms 20264 KB Output is correct
21 Correct 37 ms 17748 KB Output is correct
22 Correct 37 ms 16732 KB Output is correct
23 Correct 37 ms 20904 KB Output is correct
24 Correct 2 ms 8796 KB Output is correct
25 Correct 7 ms 9564 KB Output is correct
26 Correct 12 ms 12380 KB Output is correct
27 Correct 18 ms 15076 KB Output is correct
28 Correct 43 ms 20052 KB Output is correct
29 Correct 45 ms 20312 KB Output is correct
30 Correct 35 ms 17756 KB Output is correct
31 Correct 35 ms 16724 KB Output is correct
32 Correct 14 ms 12380 KB Output is correct
33 Correct 40 ms 20052 KB Output is correct
34 Correct 44 ms 20260 KB Output is correct
35 Correct 38 ms 17744 KB Output is correct
36 Correct 37 ms 17020 KB Output is correct
37 Correct 40 ms 20820 KB Output is correct
38 Correct 60 ms 27260 KB Output is correct