oj.uz

Submission #1087058

# Submission time Handle Problem Language Result Execution time Memory
1087058 2024-09-12T07:03:29 Z Icelast Collecting Stamps 3 (JOI20_ho_t3) C++17
100 / 100
 128 ms 130900 KB 
#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 205, INF = 4e18+9;
struct stamp{
    ll x, t;
};
ll dp[maxn][maxn][maxn][2];
void solve(){
    int n, L;
    cin >> n >> L;
    vector<stamp> a(n+2);
    for(int i = 1; i <= n; i++){
        cin >> a[i].x;
    }
    for(int i = 1; i <= n; i++){
        cin >> a[i].t;
    }
    a[0] = {0, INF};
    a[n+1] = {0, INF};
    auto C = [&](int i, int j) -> ll{
        if(a[i].x < a[j].x) swap(i, j);
        return min(a[i].x - a[j].x, L+(a[j].x-a[i].x));
    };
    auto chmin = [&](ll &a, ll b) -> void{
        a = min(a, b);
    };
    for(int i = 0; i <= n; i++){
        for(int j = 0; j <= n; j++){
            for(int k = 0; k <= n; k++){
                dp[i][j][k][0] = dp[i][j][k][1] = INF;
            }
        }
    }
    dp[1][n][0][0] = dp[1][n][0][1] = 0;
    for(int len = n-1; len >= 0; len--){
        for(int i = 1; i <= n-len+1; i++){
            int j = i+len-1;
            for(int k = 0; k <= n; k++){
                if(i > 1) chmin(dp[i][j][k][0], dp[i-1][j][k][0] + C(i-1, i-1-1));
                if(j < n) chmin(dp[i][j][k][1], dp[i][j+1][k][1] + C(j+1, j+1+1));

                if(i > 1) chmin(dp[i][j][k][0], dp[i-1][j][k][1] + C(j+1, i-1));
                if(j < n) chmin(dp[i][j][k][1], dp[i][j+1][k][0] + C(i-1, j+1));

                if(k == 0) continue;

                if(i > 1 && dp[i-1][j][k-1][0] + C(i-1, i-1-1) <= a[i-1].t) chmin(dp[i][j][k][0], dp[i-1][j][k-1][0] + C(i-1, i-1-1));
                if(j < n && dp[i][j+1][k-1][1] + C(j+1, j+1+1) <= a[j+1].t) chmin(dp[i][j][k][1], dp[i][j+1][k-1][1] + C(j+1, j+1+1));


                if(i > 1 && dp[i-1][j][k-1][1] + C(j+1, i-1) <= a[i-1].t) chmin(dp[i][j][k][0], dp[i-1][j][k-1][1] + C(j+1, i-1));
                if(j < n && dp[i][j+1][k-1][0] + C(i-1, j+1) <= a[j+1].t) chmin(dp[i][j][k][1], dp[i][j+1][k-1][0] + C(i-1, j+1));
            }
        }
    }
    int ans = 0;
    for(int i = 0; i <= n; i++){
        for(int j = 0; j <= n; j++){
            for(int k = n; k >= 0; k--){
                if(min(dp[i][j][k][0], dp[i][j][k][1]) < INF){
                    ans = max(ans, k);
                }
            }
        }
    }
    cout << ans;
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

Subtask #1
5.0 / 5.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 860 KB Output is correct
9 Correct 1 ms 860 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 860 KB Output is correct
13 Correct 0 ms 860 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 860 KB Output is correct
17 Correct 1 ms 856 KB Output is correct

Subtask #2
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 860 KB Output is correct
9 Correct 1 ms 860 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 860 KB Output is correct
13 Correct 0 ms 860 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 860 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 0 ms 860 KB Output is correct
20 Correct 1 ms 860 KB Output is correct
21 Correct 0 ms 1116 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 0 ms 1116 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 1116 KB Output is correct
30 Correct 1 ms 1232 KB Output is correct
31 Correct 0 ms 1116 KB Output is correct
32 Correct 0 ms 1116 KB Output is correct
33 Correct 1 ms 1116 KB Output is correct
34 Correct 1 ms 1116 KB Output is correct
35 Correct 1 ms 1116 KB Output is correct

Subtask #3
10.0 / 10.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 860 KB Output is correct
9 Correct 1 ms 860 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 860 KB Output is correct
13 Correct 0 ms 860 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 860 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 89 ms 104900 KB Output is correct
19 Correct 48 ms 63580 KB Output is correct
20 Correct 22 ms 34140 KB Output is correct
21 Correct 42 ms 60280 KB Output is correct
22 Correct 62 ms 78020 KB Output is correct
23 Correct 17 ms 29016 KB Output is correct
24 Correct 15 ms 22616 KB Output is correct
25 Correct 17 ms 28252 KB Output is correct
26 Correct 6 ms 10848 KB Output is correct
27 Correct 24 ms 29728 KB Output is correct
28 Correct 13 ms 21084 KB Output is correct
29 Correct 19 ms 30316 KB Output is correct
30 Correct 14 ms 23900 KB Output is correct
31 Correct 19 ms 28496 KB Output is correct
32 Correct 8 ms 14940 KB Output is correct
33 Correct 17 ms 28296 KB Output is correct
34 Correct 5 ms 10076 KB Output is correct
35 Correct 17 ms 27704 KB Output is correct
36 Correct 7 ms 13264 KB Output is correct
37 Correct 19 ms 29544 KB Output is correct
38 Correct 9 ms 16220 KB Output is correct
39 Correct 19 ms 30940 KB Output is correct
40 Correct 10 ms 18192 KB Output is correct
41 Correct 114 ms 129428 KB Output is correct
42 Correct 68 ms 87352 KB Output is correct
43 Correct 109 ms 129616 KB Output is correct
44 Correct 67 ms 86200 KB Output is correct
45 Correct 112 ms 129368 KB Output is correct
46 Correct 66 ms 87128 KB Output is correct

Subtask #4
75.0 / 75.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 348 KB Output is correct
2 Correct 0 ms 348 KB Output is correct
3 Correct 0 ms 604 KB Output is correct
4 Correct 0 ms 604 KB Output is correct
5 Correct 1 ms 604 KB Output is correct
6 Correct 1 ms 860 KB Output is correct
7 Correct 0 ms 604 KB Output is correct
8 Correct 0 ms 860 KB Output is correct
9 Correct 1 ms 860 KB Output is correct
10 Correct 0 ms 348 KB Output is correct
11 Correct 0 ms 348 KB Output is correct
12 Correct 0 ms 860 KB Output is correct
13 Correct 0 ms 860 KB Output is correct
14 Correct 0 ms 604 KB Output is correct
15 Correct 0 ms 604 KB Output is correct
16 Correct 1 ms 860 KB Output is correct
17 Correct 1 ms 856 KB Output is correct
18 Correct 1 ms 1116 KB Output is correct
19 Correct 0 ms 860 KB Output is correct
20 Correct 1 ms 860 KB Output is correct
21 Correct 0 ms 1116 KB Output is correct
22 Correct 0 ms 604 KB Output is correct
23 Correct 1 ms 1116 KB Output is correct
24 Correct 1 ms 1116 KB Output is correct
25 Correct 1 ms 1116 KB Output is correct
26 Correct 0 ms 1116 KB Output is correct
27 Correct 0 ms 604 KB Output is correct
28 Correct 1 ms 604 KB Output is correct
29 Correct 1 ms 1116 KB Output is correct
30 Correct 1 ms 1232 KB Output is correct
31 Correct 0 ms 1116 KB Output is correct
32 Correct 0 ms 1116 KB Output is correct
33 Correct 1 ms 1116 KB Output is correct
34 Correct 1 ms 1116 KB Output is correct
35 Correct 1 ms 1116 KB Output is correct
36 Correct 89 ms 104900 KB Output is correct
37 Correct 48 ms 63580 KB Output is correct
38 Correct 22 ms 34140 KB Output is correct
39 Correct 42 ms 60280 KB Output is correct
40 Correct 62 ms 78020 KB Output is correct
41 Correct 17 ms 29016 KB Output is correct
42 Correct 15 ms 22616 KB Output is correct
43 Correct 17 ms 28252 KB Output is correct
44 Correct 6 ms 10848 KB Output is correct
45 Correct 24 ms 29728 KB Output is correct
46 Correct 13 ms 21084 KB Output is correct
47 Correct 19 ms 30316 KB Output is correct
48 Correct 14 ms 23900 KB Output is correct
49 Correct 19 ms 28496 KB Output is correct
50 Correct 8 ms 14940 KB Output is correct
51 Correct 17 ms 28296 KB Output is correct
52 Correct 5 ms 10076 KB Output is correct
53 Correct 17 ms 27704 KB Output is correct
54 Correct 7 ms 13264 KB Output is correct
55 Correct 19 ms 29544 KB Output is correct
56 Correct 9 ms 16220 KB Output is correct
57 Correct 19 ms 30940 KB Output is correct
58 Correct 10 ms 18192 KB Output is correct
59 Correct 114 ms 129428 KB Output is correct
60 Correct 68 ms 87352 KB Output is correct
61 Correct 109 ms 129616 KB Output is correct
62 Correct 67 ms 86200 KB Output is correct
63 Correct 112 ms 129368 KB Output is correct
64 Correct 66 ms 87128 KB Output is correct
65 Correct 106 ms 117028 KB Output is correct
66 Correct 88 ms 107304 KB Output is correct
67 Correct 86 ms 102744 KB Output is correct
68 Correct 81 ms 94800 KB Output is correct
69 Correct 102 ms 115792 KB Output is correct
70 Correct 93 ms 110928 KB Output is correct
71 Correct 95 ms 111964 KB Output is correct
72 Correct 98 ms 113236 KB Output is correct
73 Correct 83 ms 105112 KB Output is correct
74 Correct 89 ms 98124 KB Output is correct
75 Correct 87 ms 108604 KB Output is correct
76 Correct 114 ms 124504 KB Output is correct
77 Correct 110 ms 124512 KB Output is correct
78 Correct 78 ms 95884 KB Output is correct
79 Correct 81 ms 99372 KB Output is correct
80 Correct 105 ms 121940 KB Output is correct
81 Correct 87 ms 100432 KB Output is correct
82 Correct 87 ms 106264 KB Output is correct
83 Correct 119 ms 129604 KB Output is correct
84 Correct 90 ms 110984 KB Output is correct
85 Correct 99 ms 120656 KB Output is correct
86 Correct 107 ms 118100 KB Output is correct
87 Correct 87 ms 108372 KB Output is correct
88 Correct 111 ms 130900 KB Output is correct
89 Correct 110 ms 130676 KB Output is correct
90 Correct 88 ms 109792 KB Output is correct
91 Correct 128 ms 130896 KB Output is correct
92 Correct 114 ms 130896 KB Output is correct
93 Correct 127 ms 128320 KB Output is correct