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답안 #339078

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
339078 2020-12-24T14:28:25 Z bigDuck 경주 (Race) (IOI11_race) C++14
43 / 100
 3000 ms 111724 KB 
#include "race.h"
#include<bits/stdc++.h>
using namespace std;
#define INIT  ios_base :: sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);mt19937 rng(chrono::steady_clock::now().time_since_epoch().count());
#define mp make_pair
#define pb push_back
#define ft first
#define sc second
#define ll long long
#define pii pair<int, int>
#define count_bits __builtin_popcount

int n, k;
vector<pii> g[200010];
bool v[200010];
int mn[200010][101];
int res=1e9;


void dfs(int s){
v[s]=true;
mn[s][0]=1;
for(auto pr:g[s]){
    int u=pr.ft, d=pr.sc;
    if(!v[u]){
        dfs(u);

        for(int sum=0; (sum+d)<=( k ); sum++){
            if( (mn[s][k-(sum+d) ]>0) && (mn[u][sum]>0) ){
                res=min(res, mn[s][k-(sum+d)]+mn[u][sum]);
            }
        }

        for(int sum=0; ( (sum+d)<=k ); sum++){
            if( (mn[u][sum]>0) ){
                if(mn[s][sum+d]==0){
                    mn[s][sum+d]=mn[u][sum]+1;
                }
                else{
                    mn[s][sum+d]=min(mn[s][sum+d], mn[u][sum]+1);
                }
            }
        }
    }
}

if(mn[s][k]>0){
    res=min(res, mn[s][k]);
}


return;
}





int dfs2(int s, int l, int h){
int res=1e9;
    if(l>k){
            v[s]=false;
        return res;
    }
    if(l==k){
            v[s]=false;
        return h;
    }
    v[s]=true;
    for(pii pr:g[s]){
        int u=pr.ft, d=pr.sc;
        if(!v[u]){
            res=min(dfs2(u, l+d, h+1), res);
        }
    }
    v[s]=false;
    return res;
}







int best_path(int N, int K, int H[][2], int L[])
{
  n=N; k=K;

  for(int i=0; i<(n-1); i++){
    int u=H[i][0]+1, v=H[i][1]+1, d=L[i];
    g[u].pb({v, d}); g[v].pb({u, d});
  }
    if( (k<=100) ){    dfs(1);}
    else{
        for(int i=1; i<=n; i++){
            res=min(res, dfs2(i, 0, 1));
        }
    }

  if(res==(1e9)){
    return -1;
  }
  return res-1;
}

Subtask #1
9.0 / 9.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 3 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 3 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 3 ms 5100 KB Output is correct
10 Correct 3 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct

Subtask #2
12.0 / 12.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 3 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 3 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 3 ms 5100 KB Output is correct
10 Correct 3 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 3 ms 5100 KB Output is correct
20 Correct 3 ms 5100 KB Output is correct
21 Correct 19 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 19 ms 5228 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5044 KB Output is correct
28 Correct 8 ms 5100 KB Output is correct
29 Correct 13 ms 5248 KB Output is correct
30 Correct 13 ms 5100 KB Output is correct
31 Correct 19 ms 5100 KB Output is correct
32 Correct 19 ms 5100 KB Output is correct
33 Correct 16 ms 5100 KB Output is correct
34 Correct 5 ms 5100 KB Output is correct
35 Correct 5 ms 5100 KB Output is correct
36 Correct 5 ms 5100 KB Output is correct
37 Correct 12 ms 5100 KB Output is correct
38 Correct 15 ms 5100 KB Output is correct

Subtask #3
22.0 / 22.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 3 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 3 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 3 ms 5100 KB Output is correct
10 Correct 3 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 130 ms 49772 KB Output is correct
20 Correct 129 ms 49664 KB Output is correct
21 Correct 128 ms 49644 KB Output is correct
22 Correct 134 ms 49644 KB Output is correct
23 Correct 103 ms 49772 KB Output is correct
24 Correct 100 ms 49772 KB Output is correct
25 Correct 128 ms 53868 KB Output is correct
26 Correct 93 ms 58348 KB Output is correct
27 Correct 242 ms 93676 KB Output is correct
28 Correct 242 ms 111724 KB Output is correct
29 Correct 238 ms 110316 KB Output is correct
30 Correct 245 ms 93676 KB Output is correct
31 Correct 243 ms 93676 KB Output is correct
32 Correct 289 ms 93676 KB Output is correct
33 Correct 258 ms 92780 KB Output is correct
34 Correct 169 ms 92484 KB Output is correct

Subtask #4
0 / 57.0

# 결과 실행 시간 메모리 Grader output
1 Correct 4 ms 5100 KB Output is correct
2 Correct 4 ms 5100 KB Output is correct
3 Correct 3 ms 5100 KB Output is correct
4 Correct 4 ms 5100 KB Output is correct
5 Correct 3 ms 5100 KB Output is correct
6 Correct 3 ms 5100 KB Output is correct
7 Correct 3 ms 5100 KB Output is correct
8 Correct 4 ms 5100 KB Output is correct
9 Correct 3 ms 5100 KB Output is correct
10 Correct 3 ms 5100 KB Output is correct
11 Correct 3 ms 5100 KB Output is correct
12 Correct 4 ms 5100 KB Output is correct
13 Correct 4 ms 5100 KB Output is correct
14 Correct 4 ms 5100 KB Output is correct
15 Correct 4 ms 5100 KB Output is correct
16 Correct 4 ms 5120 KB Output is correct
17 Correct 4 ms 5100 KB Output is correct
18 Correct 4 ms 5100 KB Output is correct
19 Correct 3 ms 5100 KB Output is correct
20 Correct 3 ms 5100 KB Output is correct
21 Correct 19 ms 5100 KB Output is correct
22 Correct 4 ms 5100 KB Output is correct
23 Correct 4 ms 5120 KB Output is correct
24 Correct 4 ms 5100 KB Output is correct
25 Correct 19 ms 5228 KB Output is correct
26 Correct 4 ms 5100 KB Output is correct
27 Correct 4 ms 5044 KB Output is correct
28 Correct 8 ms 5100 KB Output is correct
29 Correct 13 ms 5248 KB Output is correct
30 Correct 13 ms 5100 KB Output is correct
31 Correct 19 ms 5100 KB Output is correct
32 Correct 19 ms 5100 KB Output is correct
33 Correct 16 ms 5100 KB Output is correct
34 Correct 5 ms 5100 KB Output is correct
35 Correct 5 ms 5100 KB Output is correct
36 Correct 5 ms 5100 KB Output is correct
37 Correct 12 ms 5100 KB Output is correct
38 Correct 15 ms 5100 KB Output is correct
39 Correct 130 ms 49772 KB Output is correct
40 Correct 129 ms 49664 KB Output is correct
41 Correct 128 ms 49644 KB Output is correct
42 Correct 134 ms 49644 KB Output is correct
43 Correct 103 ms 49772 KB Output is correct
44 Correct 100 ms 49772 KB Output is correct
45 Correct 128 ms 53868 KB Output is correct
46 Correct 93 ms 58348 KB Output is correct
47 Correct 242 ms 93676 KB Output is correct
48 Correct 242 ms 111724 KB Output is correct
49 Correct 238 ms 110316 KB Output is correct
50 Correct 245 ms 93676 KB Output is correct
51 Correct 243 ms 93676 KB Output is correct
52 Correct 289 ms 93676 KB Output is correct
53 Correct 258 ms 92780 KB Output is correct
54 Correct 169 ms 92484 KB Output is correct
55 Correct 244 ms 5484 KB Output is correct
56 Correct 2602 ms 5708 KB Output is correct
57 Correct 83 ms 51052 KB Output is correct
58 Execution timed out 3086 ms 11368 KB Time limit exceeded
59 Halted 0 ms 0 KB -