oj.uz

답안 #231992

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
231992 2020-05-15T15:14:44 Z DodgeBallMan 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 2994 ms 41844 KB 
#include <bits/stdc++.h>
#include "gardenlib.h"
#include "garden.h"
 
using namespace std;
 
const int N = 3e5 + 10;
int chk[N], d[N], to[N], cyc;
vector<int> vec, g[N], g2[N];
 
void dfs( int u ) {
    //printf("U %d\n",u);
    chk[u] = 1, vec.emplace_back( u );
    for( int v : g[u] ) {
        if( !chk[v] ) d[v] = d[u] + 1, dfs( v );
        else if( chk[v] == 1 ) for( int i = (int)vec.size() - 1 ; i >= 0 ; i-- ) {
            cyc++;
            if( vec[i] == v ) break;
        }
    }
    chk[u] = 2, vec.pop_back();
}
 
//void answer( int x ) { printf("%d ",x); }
void count_routes( int n, int m, int p, int r[][2], int q, int G[] ) {
    for( int i = 0 ; i < m ; i++ ) {
        if( g2[r[i][0]].size() < 2 ) g2[r[i][0]].emplace_back( r[i][1] );
        if( g2[r[i][1]].size() < 2 ) g2[r[i][1]].emplace_back( r[i][0] );
    }
    for(int i = 0; i < n; i++) if(g2[i].size() == 1) g2[i].emplace_back(g2[i][0]);
    //printf("\n");
    for(int i = 0; i < n; i++) for(int j = 0; j < (int)g2[i].size(); j++) {
        int v = g2[i][j];
        //printf("%d %d\n",i,v);
        if(g2[v][0] == i) v += n;
        g[v].emplace_back(i + (j ? n : 0));
    }
    /*for( int i = 0 ; i < 2*n ; i++ ) printf("%d ",to[i]);
    printf("\n");*/
    /*for( int i = 0 ; i < 2*n ; i++ ) g[i].clear();
    for( int i = 0 ; i < 2*n ; i++ ) g[to[i]].emplace_back( i );*/
    /*for( int i = 0 ; i < 2*n ; i++ ) {
        printf("%d : ",i);
        for( int v : g[i] ) printf("%d ",v);
        printf("\n");
    }
    printf("\n");*/
    vector<int> ans( q, 0 );
    vec.clear(), memset( d, 127, sizeof d ), d[p] = cyc = 0, memset( chk, 0, sizeof chk );
    dfs( p );
    //printf("%d\n",cyc);
    for( int i = 0 ; i < q ; i++ ) {
        for( int j = 0 ; j < n ; j++ ) {
            if( d[j] > G[i] ) continue ;
            if( cyc ) ans[i] += ( ( G[i] - d[j] ) % cyc == 0 );
            else ans[i] += ( d[j] == G[i] );
        }
    }
    vec.clear(), memset( d, 127, sizeof d ), d[p+n] = cyc = 0, memset( chk, 0, sizeof chk );
    dfs( p+n );
    //printf("%d\n",cyc);
    for( int i = 0 ; i < q ; i++ ) {
        for( int j = 0 ; j < n ; j++ ) {
            if( d[j] > G[i] ) continue ;
            if( cyc ) ans[i] += ( ( G[i] - d[j] ) % cyc == 0 );
            else ans[i] += ( d[j] == G[i] );
        }
       //
        answer( ans[i] );   
    }
    //return ans;
}
 
/*int main()
{
    int n, m, p, q, r[100][2], G[100];
    scanf("%d %d %d %d",&n,&m,&p,&q);
    for( int i = 0 ; i < m ; i++ ) {
        scanf("%d %d",&r[i][0],&r[i][1]);
    }
    for( int i = 0 ; i < q ; i++ ) scanf("%d",&G[i]);
    count_routes( n, m, p, r, q, G );
}*/

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 16896 KB Output is correct
2 Correct 15 ms 16896 KB Output is correct
3 Correct 15 ms 16896 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 14 ms 16768 KB Output is correct
6 Correct 15 ms 17024 KB Output is correct
7 Correct 14 ms 16768 KB Output is correct
8 Correct 16 ms 16896 KB Output is correct
9 Correct 16 ms 17024 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 16896 KB Output is correct
2 Correct 15 ms 16896 KB Output is correct
3 Correct 15 ms 16896 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 14 ms 16768 KB Output is correct
6 Correct 15 ms 17024 KB Output is correct
7 Correct 14 ms 16768 KB Output is correct
8 Correct 16 ms 16896 KB Output is correct
9 Correct 16 ms 17024 KB Output is correct
10 Correct 14 ms 16768 KB Output is correct
11 Correct 26 ms 18944 KB Output is correct
12 Correct 42 ms 20344 KB Output is correct
13 Correct 73 ms 35160 KB Output is correct
14 Correct 140 ms 28280 KB Output is correct
15 Correct 181 ms 28644 KB Output is correct
16 Correct 127 ms 25848 KB Output is correct
17 Correct 111 ms 24696 KB Output is correct
18 Correct 45 ms 20344 KB Output is correct
19 Correct 136 ms 28280 KB Output is correct
20 Correct 174 ms 28664 KB Output is correct
21 Correct 141 ms 25720 KB Output is correct
22 Correct 117 ms 24696 KB Output is correct
23 Correct 146 ms 29560 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 15 ms 16896 KB Output is correct
2 Correct 15 ms 16896 KB Output is correct
3 Correct 15 ms 16896 KB Output is correct
4 Correct 15 ms 16768 KB Output is correct
5 Correct 14 ms 16768 KB Output is correct
6 Correct 15 ms 17024 KB Output is correct
7 Correct 14 ms 16768 KB Output is correct
8 Correct 16 ms 16896 KB Output is correct
9 Correct 16 ms 17024 KB Output is correct
10 Correct 14 ms 16768 KB Output is correct
11 Correct 26 ms 18944 KB Output is correct
12 Correct 42 ms 20344 KB Output is correct
13 Correct 73 ms 35160 KB Output is correct
14 Correct 140 ms 28280 KB Output is correct
15 Correct 181 ms 28644 KB Output is correct
16 Correct 127 ms 25848 KB Output is correct
17 Correct 111 ms 24696 KB Output is correct
18 Correct 45 ms 20344 KB Output is correct
19 Correct 136 ms 28280 KB Output is correct
20 Correct 174 ms 28664 KB Output is correct
21 Correct 141 ms 25720 KB Output is correct
22 Correct 117 ms 24696 KB Output is correct
23 Correct 146 ms 29560 KB Output is correct
24 Correct 15 ms 16768 KB Output is correct
25 Correct 107 ms 19000 KB Output is correct
26 Correct 124 ms 20352 KB Output is correct
27 Correct 2544 ms 35440 KB Output is correct
28 Correct 948 ms 28416 KB Output is correct
29 Correct 2994 ms 28696 KB Output is correct
30 Correct 1731 ms 25976 KB Output is correct
31 Correct 1745 ms 24740 KB Output is correct
32 Correct 138 ms 20344 KB Output is correct
33 Correct 925 ms 28408 KB Output is correct
34 Correct 2982 ms 28804 KB Output is correct
35 Correct 1843 ms 25976 KB Output is correct
36 Correct 2342 ms 24696 KB Output is correct
37 Correct 697 ms 29560 KB Output is correct
38 Correct 2790 ms 41844 KB Output is correct