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답안 #164698

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
164698 2019-11-22T16:31:26 Z arnold518 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 429 ms 36768 KB 
#include "garden.h"
#include "gardenlib.h"
#include <bits/stdc++.h>
using namespace std;

typedef long long ll;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;

const int MAXN = 3e5;

int N, M, P, Q;
int *G;
vector<int> adj2[MAXN+10];
vector<int> adj[MAXN+10];

int ans[MAXN+10];
int cnt[MAXN+10], cyc=-1;
int dep[MAXN+10];

void dfs(int now, int depth)
{
    //printf("%d\n", now);
    dep[now]=depth;
    for(auto nxt : adj[now])
    {
        if(dep[nxt]!=-1)
        {
            cyc=depth+1;
            continue;
        }
        dfs(nxt, depth+1);
    }
}

void count_routes(int _N, int _M, int _P, int R[][2], int _Q, int *_G)
{
    int i, j;
    N=_N; M=_M; P=_P; Q=_Q; G=_G;

    for(i=0; i<M; i++)
    {
        int u=R[i][0], v=R[i][1];
        adj2[u].push_back(v);
        adj2[v].push_back(u);
    }

    for(i=0; i<N; i++)
    {
        int nxt=adj2[i][0];
        if(adj2[nxt][0]==i) adj[nxt+N].push_back(i);//, printf("E%d %d\n", nxt+N, i);
        else adj[nxt].push_back(i);//, printf("E%d %d\n", nxt, i);
    }

    for(i=0; i<N; i++)
    {
        int nxt;
        if(adj2[i].size()==1) nxt=adj2[i][0];
        else nxt=adj2[i][1];

        if(adj2[nxt][0]==i) adj[nxt+N].push_back(i+N);//, printf("E%d %d\n", nxt+N, i+N);
        else adj[nxt].push_back(i+N);//, printf("E%d %d\n", nxt, i+N);
    }

    memset(cnt, 0, sizeof(cnt));
    memset(dep, -1, sizeof(dep));
    cyc=-1;
    dfs(P, 0);
    for(i=0; i<N; i++) cnt[dep[i]]++;

    for(i=0; i<Q; i++)
    {
        if(cyc==-1)
        {
            if(G[i]<2*N) ans[i]+=cnt[G[i]];
        }
        else
        {
            for(j=G[i]%cyc; j<2*N && j<=G[i]; j+=cyc) ans[i]+=cnt[j];
        }
    }

    //printf("!%d\n", cyc);

    memset(cnt, 0, sizeof(cnt));
    memset(dep, -1, sizeof(dep));
    cyc=-1;
    dfs(P+N, 0);
    for(i=0; i<N; i++) cnt[dep[i]]++;

    for(i=0; i<Q; i++)
    {
        if(cyc==-1)
        {
            if(G[i]<2*N) ans[i]+=cnt[G[i]];
        }
        else
        {
            for(j=G[i]%cyc; j<2*N && j<=G[i]; j+=cyc) ans[i]+=cnt[j];
        }
    }

    //printf("!%d\n", cyc);
    for(i=0; i<Q; i++) answer(ans[i]);
}

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 16920 KB Output is correct
2 Correct 18 ms 16888 KB Output is correct
3 Correct 18 ms 16836 KB Output is correct
4 Correct 16 ms 16760 KB Output is correct
5 Correct 17 ms 16760 KB Output is correct
6 Correct 18 ms 16936 KB Output is correct
7 Correct 17 ms 16732 KB Output is correct
8 Correct 17 ms 16888 KB Output is correct
9 Correct 19 ms 17016 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 16920 KB Output is correct
2 Correct 18 ms 16888 KB Output is correct
3 Correct 18 ms 16836 KB Output is correct
4 Correct 16 ms 16760 KB Output is correct
5 Correct 17 ms 16760 KB Output is correct
6 Correct 18 ms 16936 KB Output is correct
7 Correct 17 ms 16732 KB Output is correct
8 Correct 17 ms 16888 KB Output is correct
9 Correct 19 ms 17016 KB Output is correct
10 Correct 17 ms 16760 KB Output is correct
11 Correct 32 ms 18576 KB Output is correct
12 Correct 52 ms 19832 KB Output is correct
13 Correct 68 ms 30856 KB Output is correct
14 Correct 199 ms 26800 KB Output is correct
15 Correct 227 ms 27096 KB Output is correct
16 Correct 181 ms 24476 KB Output is correct
17 Correct 143 ms 23544 KB Output is correct
18 Correct 52 ms 19812 KB Output is correct
19 Correct 171 ms 26788 KB Output is correct
20 Correct 218 ms 27080 KB Output is correct
21 Correct 177 ms 24424 KB Output is correct
22 Correct 152 ms 23440 KB Output is correct
23 Correct 203 ms 27840 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 18 ms 16920 KB Output is correct
2 Correct 18 ms 16888 KB Output is correct
3 Correct 18 ms 16836 KB Output is correct
4 Correct 16 ms 16760 KB Output is correct
5 Correct 17 ms 16760 KB Output is correct
6 Correct 18 ms 16936 KB Output is correct
7 Correct 17 ms 16732 KB Output is correct
8 Correct 17 ms 16888 KB Output is correct
9 Correct 19 ms 17016 KB Output is correct
10 Correct 17 ms 16760 KB Output is correct
11 Correct 32 ms 18576 KB Output is correct
12 Correct 52 ms 19832 KB Output is correct
13 Correct 68 ms 30856 KB Output is correct
14 Correct 199 ms 26800 KB Output is correct
15 Correct 227 ms 27096 KB Output is correct
16 Correct 181 ms 24476 KB Output is correct
17 Correct 143 ms 23544 KB Output is correct
18 Correct 52 ms 19812 KB Output is correct
19 Correct 171 ms 26788 KB Output is correct
20 Correct 218 ms 27080 KB Output is correct
21 Correct 177 ms 24424 KB Output is correct
22 Correct 152 ms 23440 KB Output is correct
23 Correct 203 ms 27840 KB Output is correct
24 Correct 17 ms 16760 KB Output is correct
25 Correct 38 ms 18764 KB Output is correct
26 Correct 55 ms 19836 KB Output is correct
27 Correct 67 ms 30812 KB Output is correct
28 Correct 429 ms 26872 KB Output is correct
29 Correct 353 ms 27116 KB Output is correct
30 Correct 160 ms 24540 KB Output is correct
31 Correct 189 ms 23568 KB Output is correct
32 Correct 57 ms 19900 KB Output is correct
33 Correct 341 ms 26832 KB Output is correct
34 Correct 352 ms 27168 KB Output is correct
35 Correct 174 ms 24332 KB Output is correct
36 Correct 197 ms 23540 KB Output is correct
37 Correct 198 ms 27768 KB Output is correct
38 Correct 187 ms 36768 KB Output is correct