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Submission #253276

# Submission time Handle Problem Language Result Execution time Memory
253276 2020-07-27T15:13:33 Z doowey Collecting Stamps 3 (JOI20_ho_t3) C++14
100 / 100
 1363 ms 152300 KB 
#include <bits/stdc++.h>

using namespace std;

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

#define fi first
#define se second
#define mp make_pair
#define fastIO ios::sync_with_stdio(false);cin.tie(0);cout.tie(0);

struct State{
    ll dist;
    int to_left;
    int to_right;
    int collect;
    int side;
    bool operator< (const State &Q) const {
        return dist > Q.dist;
    }
};

const int N = 201;
const ll inf = (ll)1e18;
ll dp[N][N][N][2];
ll x[N], t[N];

priority_queue<State> bf;

void upd_state(State nx){
    if(nx.dist < dp[nx.to_left][nx.to_right][nx.collect][nx.side]){
        dp[nx.to_left][nx.to_right][nx.collect][nx.side] = nx.dist;
        bf.push(nx);
    }
}

int main(){
    fastIO;
    int n;
    ll d;
    cin >> n >> d;
    for(int i = 1 ; i <= n; i ++ ){
        cin >> x[i];
    }
    for(int i = 1; i <= n; i ++ ){
        cin >> t[i];
    }
    for(int i = 0 ; i <= n; i ++ ){
        for(int j = 0 ; j <= n; j ++ ){
            for(int k = 0; k <= n; k ++ ){
                for(int b = 0; b < 2; b ++ ){
                    dp[i][j][k][b] = inf;
                }
            }
        }
    }
    int m = (n + 1);
    x[m]=d,t[m]=0;
    x[0]=0,t[0]=0;
    int ans = 0;
    upd_state({0, 0, 0, 0, 0});
    State cur;
    State nx;
    ll dnw;
    while(!bf.empty()){
        cur = bf.top();
        bf.pop();
        ans = max(ans, cur.collect);
        if(cur.dist != dp[cur.to_left][cur.to_right][cur.collect][cur.side])
            continue;
        upd_state({cur.dist + x[cur.to_right] + d-x[m - cur.to_left], cur.to_left, cur.to_right, cur.collect, cur.side ^ 1});
        if(cur.to_left + cur.to_right < n){
            if(cur.side == 1){
                nx = {cur.dist, cur.to_left, cur.to_right + 1, cur.collect, 1};
                dnw = x[cur.to_right+1] - x[cur.to_right] + cur.dist;
                nx.dist = dnw;
                if(dnw <= t[cur.to_right + 1])
                    nx.collect ++ ;
                upd_state(nx);
            }
            if(cur.side == 0){
                nx = {cur.dist, cur.to_left + 1, cur.to_right, cur.collect, 0};
                dnw = x[m - cur.to_left]-x[m - cur.to_left - 1] + cur.dist;
                nx.dist = dnw;
                if(dnw <= t[m - cur.to_left - 1])
                    nx.collect ++ ;
                upd_state(nx);
            }
        }
    }
    cout << ans << "\n";
    return 0;
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 896 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 896 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 1152 KB Output is correct
19 Correct 1 ms 768 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 1152 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 1152 KB Output is correct
24 Correct 1 ms 1024 KB Output is correct
25 Correct 1 ms 1152 KB Output is correct
26 Correct 1 ms 1152 KB Output is correct
27 Correct 0 ms 640 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 1 ms 1152 KB Output is correct
30 Correct 1 ms 1152 KB Output is correct
31 Correct 1 ms 1024 KB Output is correct
32 Correct 1 ms 1024 KB Output is correct
33 Correct 1 ms 1152 KB Output is correct
34 Correct 1 ms 1280 KB Output is correct
35 Correct 1 ms 1152 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 896 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 688 ms 115420 KB Output is correct
19 Correct 298 ms 68832 KB Output is correct
20 Correct 89 ms 36596 KB Output is correct
21 Correct 268 ms 65356 KB Output is correct
22 Correct 506 ms 88920 KB Output is correct
23 Correct 46 ms 30200 KB Output is correct
24 Correct 37 ms 23920 KB Output is correct
25 Correct 43 ms 29552 KB Output is correct
26 Correct 16 ms 11200 KB Output is correct
27 Correct 50 ms 30712 KB Output is correct
28 Correct 35 ms 22392 KB Output is correct
29 Correct 73 ms 31344 KB Output is correct
30 Correct 43 ms 24952 KB Output is correct
31 Correct 68 ms 29572 KB Output is correct
32 Correct 30 ms 15612 KB Output is correct
33 Correct 72 ms 29684 KB Output is correct
34 Correct 15 ms 10876 KB Output is correct
35 Correct 26 ms 27804 KB Output is correct
36 Correct 17 ms 13948 KB Output is correct
37 Correct 31 ms 30076 KB Output is correct
38 Correct 28 ms 16892 KB Output is correct
39 Correct 32 ms 31100 KB Output is correct
40 Correct 26 ms 18684 KB Output is correct
41 Correct 965 ms 151676 KB Output is correct
42 Correct 60 ms 86072 KB Output is correct
43 Correct 1006 ms 151628 KB Output is correct
44 Correct 48 ms 84920 KB Output is correct
45 Correct 910 ms 151752 KB Output is correct
46 Correct 50 ms 86072 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 512 KB Output is correct
2 Correct 1 ms 512 KB Output is correct
3 Correct 1 ms 640 KB Output is correct
4 Correct 1 ms 512 KB Output is correct
5 Correct 1 ms 512 KB Output is correct
6 Correct 1 ms 896 KB Output is correct
7 Correct 1 ms 640 KB Output is correct
8 Correct 1 ms 768 KB Output is correct
9 Correct 1 ms 896 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct
12 Correct 1 ms 896 KB Output is correct
13 Correct 1 ms 896 KB Output is correct
14 Correct 0 ms 512 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 896 KB Output is correct
17 Correct 1 ms 896 KB Output is correct
18 Correct 1 ms 1152 KB Output is correct
19 Correct 1 ms 768 KB Output is correct
20 Correct 1 ms 896 KB Output is correct
21 Correct 1 ms 1152 KB Output is correct
22 Correct 1 ms 640 KB Output is correct
23 Correct 1 ms 1152 KB Output is correct
24 Correct 1 ms 1024 KB Output is correct
25 Correct 1 ms 1152 KB Output is correct
26 Correct 1 ms 1152 KB Output is correct
27 Correct 0 ms 640 KB Output is correct
28 Correct 1 ms 768 KB Output is correct
29 Correct 1 ms 1152 KB Output is correct
30 Correct 1 ms 1152 KB Output is correct
31 Correct 1 ms 1024 KB Output is correct
32 Correct 1 ms 1024 KB Output is correct
33 Correct 1 ms 1152 KB Output is correct
34 Correct 1 ms 1280 KB Output is correct
35 Correct 1 ms 1152 KB Output is correct
36 Correct 688 ms 115420 KB Output is correct
37 Correct 298 ms 68832 KB Output is correct
38 Correct 89 ms 36596 KB Output is correct
39 Correct 268 ms 65356 KB Output is correct
40 Correct 506 ms 88920 KB Output is correct
41 Correct 46 ms 30200 KB Output is correct
42 Correct 37 ms 23920 KB Output is correct
43 Correct 43 ms 29552 KB Output is correct
44 Correct 16 ms 11200 KB Output is correct
45 Correct 50 ms 30712 KB Output is correct
46 Correct 35 ms 22392 KB Output is correct
47 Correct 73 ms 31344 KB Output is correct
48 Correct 43 ms 24952 KB Output is correct
49 Correct 68 ms 29572 KB Output is correct
50 Correct 30 ms 15612 KB Output is correct
51 Correct 72 ms 29684 KB Output is correct
52 Correct 15 ms 10876 KB Output is correct
53 Correct 26 ms 27804 KB Output is correct
54 Correct 17 ms 13948 KB Output is correct
55 Correct 31 ms 30076 KB Output is correct
56 Correct 28 ms 16892 KB Output is correct
57 Correct 32 ms 31100 KB Output is correct
58 Correct 26 ms 18684 KB Output is correct
59 Correct 965 ms 151676 KB Output is correct
60 Correct 60 ms 86072 KB Output is correct
61 Correct 1006 ms 151628 KB Output is correct
62 Correct 48 ms 84920 KB Output is correct
63 Correct 910 ms 151752 KB Output is correct
64 Correct 50 ms 86072 KB Output is correct
65 Correct 1172 ms 139676 KB Output is correct
66 Correct 941 ms 117748 KB Output is correct
67 Correct 685 ms 113112 KB Output is correct
68 Correct 693 ms 105480 KB Output is correct
69 Correct 1153 ms 138312 KB Output is correct
70 Correct 422 ms 121168 KB Output is correct
71 Correct 1062 ms 134732 KB Output is correct
72 Correct 461 ms 123612 KB Output is correct
73 Correct 512 ms 115416 KB Output is correct
74 Correct 363 ms 102496 KB Output is correct
75 Correct 810 ms 131400 KB Output is correct
76 Correct 686 ms 134488 KB Output is correct
77 Correct 1237 ms 146760 KB Output is correct
78 Correct 394 ms 106592 KB Output is correct
79 Correct 906 ms 122184 KB Output is correct
80 Correct 753 ms 131928 KB Output is correct
81 Correct 805 ms 123208 KB Output is correct
82 Correct 392 ms 110432 KB Output is correct
83 Correct 1240 ms 151752 KB Output is correct
84 Correct 393 ms 115044 KB Output is correct
85 Correct 682 ms 143048 KB Output is correct
86 Correct 474 ms 128348 KB Output is correct
87 Correct 898 ms 131284 KB Output is correct
88 Correct 1185 ms 152260 KB Output is correct
89 Correct 1363 ms 152300 KB Output is correct
90 Correct 63 ms 108088 KB Output is correct
91 Correct 1353 ms 152264 KB Output is correct
92 Correct 1142 ms 152264 KB Output is correct
93 Correct 84 ms 126264 KB Output is correct