oj.uz

답안 #231993

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
231993 2020-05-15T15:16:51 Z DodgeBallMan 열대 식물원 (Tropical Garden) (IOI11_garden) C++14
100 / 100
 3017 ms 29420 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];
 
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 count_routes( int n, int m, int p, int r[][2], int q, int G[] ) {
    for( int i = 0 ; i < m ; i++ ) {
        if( g[r[i][0]].size() < 2 ) g[r[i][0]].emplace_back( r[i][1] );
        if( g[r[i][1]].size() < 2 ) g[r[i][1]].emplace_back( r[i][0] );
    }
    for( int i = 0 ; i < n ; i++ ) for( int j = 0 ; j < g[i].size() ; j++ ) {
        int v = g[i][j], now = i + j*n;
        if( g[v][0] == i && g[v].size() > 1 ) {
            to[now] = v + n;
            if( g[i].size() == 1 ) to[i+n] = v + n;
        }
        else {
            to[now] = v;
            if( g[i].size() == 1 ) to[i+n] = v + n;
        }
        //printf("u v : %d %d\n",i,v);
    }
    /*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]);
    vector<int> ans = count_routes( n, m, p, r, q, G );
    for( int i : ans ) printf("%d ",i);
}*/

Compilation message

garden.cpp: In function 'void count_routes(int, int, int, int (*)[2], int, int*)':
garden.cpp:29:55: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
     for( int i = 0 ; i < n ; i++ ) for( int j = 0 ; j < g[i].size() ; j++ ) {
                                                     ~~^~~~~~~~~~~~~

Subtask #1
49.0 / 49.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9856 KB Output is correct
2 Correct 11 ms 9856 KB Output is correct
3 Correct 11 ms 9856 KB Output is correct
4 Correct 10 ms 9728 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 11 ms 9856 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9856 KB Output is correct
9 Correct 12 ms 9856 KB Output is correct

Subtask #2
20.0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9856 KB Output is correct
2 Correct 11 ms 9856 KB Output is correct
3 Correct 11 ms 9856 KB Output is correct
4 Correct 10 ms 9728 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 11 ms 9856 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9856 KB Output is correct
9 Correct 12 ms 9856 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 20 ms 11392 KB Output is correct
12 Correct 34 ms 12280 KB Output is correct
13 Correct 61 ms 25196 KB Output is correct
14 Correct 108 ms 18040 KB Output is correct
15 Correct 140 ms 18296 KB Output is correct
16 Correct 107 ms 15992 KB Output is correct
17 Correct 92 ms 15032 KB Output is correct
18 Correct 35 ms 12280 KB Output is correct
19 Correct 99 ms 18040 KB Output is correct
20 Correct 149 ms 18296 KB Output is correct
21 Correct 107 ms 15992 KB Output is correct
22 Correct 92 ms 15224 KB Output is correct
23 Correct 112 ms 19128 KB Output is correct

Subtask #3
31.0 / 31.0

# 결과 실행 시간 메모리 Grader output
1 Correct 11 ms 9856 KB Output is correct
2 Correct 11 ms 9856 KB Output is correct
3 Correct 11 ms 9856 KB Output is correct
4 Correct 10 ms 9728 KB Output is correct
5 Correct 10 ms 9728 KB Output is correct
6 Correct 11 ms 9856 KB Output is correct
7 Correct 10 ms 9728 KB Output is correct
8 Correct 11 ms 9856 KB Output is correct
9 Correct 12 ms 9856 KB Output is correct
10 Correct 10 ms 9728 KB Output is correct
11 Correct 20 ms 11392 KB Output is correct
12 Correct 34 ms 12280 KB Output is correct
13 Correct 61 ms 25196 KB Output is correct
14 Correct 108 ms 18040 KB Output is correct
15 Correct 140 ms 18296 KB Output is correct
16 Correct 107 ms 15992 KB Output is correct
17 Correct 92 ms 15032 KB Output is correct
18 Correct 35 ms 12280 KB Output is correct
19 Correct 99 ms 18040 KB Output is correct
20 Correct 149 ms 18296 KB Output is correct
21 Correct 107 ms 15992 KB Output is correct
22 Correct 92 ms 15224 KB Output is correct
23 Correct 112 ms 19128 KB Output is correct
24 Correct 11 ms 9728 KB Output is correct
25 Correct 112 ms 11264 KB Output is correct
26 Correct 151 ms 12284 KB Output is correct
27 Correct 2564 ms 25268 KB Output is correct
28 Correct 992 ms 18044 KB Output is correct
29 Correct 3017 ms 18396 KB Output is correct
30 Correct 1735 ms 16092 KB Output is correct
31 Correct 1821 ms 15200 KB Output is correct
32 Correct 171 ms 12284 KB Output is correct
33 Correct 958 ms 18168 KB Output is correct
34 Correct 2961 ms 18328 KB Output is correct
35 Correct 1836 ms 16064 KB Output is correct
36 Correct 2274 ms 15352 KB Output is correct
37 Correct 735 ms 19060 KB Output is correct
38 Correct 2794 ms 29420 KB Output is correct