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답안 #201563

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
201563 2020-02-11T05:57:26 Z qkxwsm Collecting Stamps 3 (JOI20_ho_t3) C++14
100 / 100
 147 ms 135928 KB 
#include <bits/stdc++.h>

using namespace std;

template<class T, class U>
void ckmin(T &a, U b)
{
    if (a > b) a = b;
}

template<class T, class U>
void ckmax(T &a, U b)
{
    if (a < b) a = b;
}

#define MP make_pair
#define PB push_back
#define LB lower_bound
#define UB upper_bound
#define fi first
#define se second
#define SZ(x) ((int) (x).size())
#define ALL(x) (x).begin(), (x).end()
#define FOR(i, a, b) for (auto i = (a); i < (b); i++)
#define FORD(i, a, b) for (auto i = (a) - 1; i >= (b); i--)

typedef long long ll;
typedef long double ld;
typedef pair<int, int> pii;
typedef pair<ll, ll> pll;
typedef vector<int> vi;
typedef vector<ll> vl;
typedef vector<pii> vpi;
typedef vector<pll> vpl;

const int MAXN = 213;
const int INF = 1000000007;
const ll LLINF = 2696969696969696969ll;

int N;
ll L;
pll arr[MAXN];
ll dp[MAXN][MAXN][2][MAXN];
int ans;

int32_t main()
{
    cout << fixed << setprecision(12);
    cerr << fixed << setprecision(4);
    ios_base::sync_with_stdio(false); cin.tie(0);
    cin >> N >> L;
    FOR(i, 0, N)
    {
        cin >> arr[i].fi;
    }
    FOR(i, 0, N)
    {
        cin >> arr[i].se;
    }
    arr[N] = {L, 0};
    //dp[how many left we've been][how many right we've been][where are we?][# collected] = time
    FOR(i, 0, N + 1)
    {
        FOR(j, 0, N + 1)
        {
            FOR(k, 0, 2)
            {
                FOR(m, 0, N + 1)
                {
                    dp[i][j][k][m] = LLINF;
                }
            }
        }
    }
    dp[0][0][1][0] = 0;
    FOR(i, 0, N + 1)
    {
        FOR(j, 0, N + 1 - i)
        {
            FOR(k, 0, 2)
            {
                FOR(m, 0, N + 1)
                {
                    if (dp[i][j][k][m] >= LLINF) continue;
                    ckmax(ans, m);
                    if (i + j == N) continue;
                    //head left.
                    ll nt; int nm;
                    if (k) //you are currently at arr[N - j].fi
                    {
                        //try to go to arr[i].fi
                        nt = dp[i][j][k][m] + (L - arr[N - j].fi + arr[i].fi);
                        nm = m + (nt <= arr[i].se);
                        ckmin(dp[i + 1][j][0][nm], nt);
                        //try to go to arr[N - j - 1].fi
                        nt = dp[i][j][k][m] + (arr[N - j].fi - arr[N - j - 1].fi);
                        nm = m + (nt <= arr[N - j - 1].se);
                        ckmin(dp[i][j + 1][1][nm], nt);
                    }
                    else //you are currently at arr[i - 1].fi
                    {
                        //try to go to arr[i].fi
                        nt = dp[i][j][k][m] + (arr[i].fi - arr[i - 1].fi);
                        nm = m + (nt <= arr[i].se);
                        ckmin(dp[i + 1][j][0][nm], nt);
                        //try to go to arr[N - j - 1].fi
                        nt = dp[i][j][k][m] + (arr[i - 1].fi + L - arr[N - j - 1].fi);
                        nm = m + (nt <= arr[N - j - 1].se);
                        ckmin(dp[i][j + 1][1][nm], nt);
                    }
                }
            }
        }
    }
    cout << ans << '\n';
}

Subtask #1
5.0 / 5.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 888 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 1020 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 636 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 5 ms 888 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 888 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 1020 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 636 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 5 ms 888 KB Output is correct
18 Correct 5 ms 1144 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 888 KB Output is correct
21 Correct 5 ms 1144 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 6 ms 1272 KB Output is correct
24 Correct 5 ms 1016 KB Output is correct
25 Correct 5 ms 1148 KB Output is correct
26 Correct 5 ms 1144 KB Output is correct
27 Correct 5 ms 632 KB Output is correct
28 Correct 5 ms 632 KB Output is correct
29 Correct 5 ms 1272 KB Output is correct
30 Correct 5 ms 1272 KB Output is correct
31 Correct 5 ms 1144 KB Output is correct
32 Correct 5 ms 1020 KB Output is correct
33 Correct 5 ms 1272 KB Output is correct
34 Correct 5 ms 1272 KB Output is correct
35 Correct 5 ms 1272 KB Output is correct

Subtask #3
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 888 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 1020 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 636 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 5 ms 888 KB Output is correct
18 Correct 94 ms 109048 KB Output is correct
19 Correct 55 ms 66168 KB Output is correct
20 Correct 30 ms 35448 KB Output is correct
21 Correct 50 ms 62584 KB Output is correct
22 Correct 69 ms 81016 KB Output is correct
23 Correct 27 ms 30200 KB Output is correct
24 Correct 20 ms 23672 KB Output is correct
25 Correct 26 ms 29560 KB Output is correct
26 Correct 12 ms 11384 KB Output is correct
27 Correct 27 ms 30840 KB Output is correct
28 Correct 19 ms 22008 KB Output is correct
29 Correct 28 ms 31484 KB Output is correct
30 Correct 21 ms 24696 KB Output is correct
31 Correct 25 ms 29560 KB Output is correct
32 Correct 15 ms 15480 KB Output is correct
33 Correct 26 ms 29560 KB Output is correct
34 Correct 11 ms 10616 KB Output is correct
35 Correct 23 ms 28920 KB Output is correct
36 Correct 13 ms 13816 KB Output is correct
37 Correct 23 ms 30840 KB Output is correct
38 Correct 16 ms 16888 KB Output is correct
39 Correct 24 ms 32120 KB Output is correct
40 Correct 16 ms 18936 KB Output is correct
41 Correct 115 ms 134520 KB Output is correct
42 Correct 59 ms 90620 KB Output is correct
43 Correct 118 ms 134520 KB Output is correct
44 Correct 61 ms 89592 KB Output is correct
45 Correct 136 ms 134572 KB Output is correct
46 Correct 61 ms 90616 KB Output is correct

Subtask #4
75.0 / 75.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 504 KB Output is correct
2 Correct 5 ms 504 KB Output is correct
3 Correct 5 ms 632 KB Output is correct
4 Correct 5 ms 504 KB Output is correct
5 Correct 5 ms 632 KB Output is correct
6 Correct 5 ms 888 KB Output is correct
7 Correct 5 ms 632 KB Output is correct
8 Correct 5 ms 760 KB Output is correct
9 Correct 5 ms 888 KB Output is correct
10 Correct 5 ms 376 KB Output is correct
11 Correct 5 ms 376 KB Output is correct
12 Correct 5 ms 1020 KB Output is correct
13 Correct 5 ms 1016 KB Output is correct
14 Correct 5 ms 636 KB Output is correct
15 Correct 5 ms 632 KB Output is correct
16 Correct 5 ms 1016 KB Output is correct
17 Correct 5 ms 888 KB Output is correct
18 Correct 5 ms 1144 KB Output is correct
19 Correct 5 ms 760 KB Output is correct
20 Correct 5 ms 888 KB Output is correct
21 Correct 5 ms 1144 KB Output is correct
22 Correct 5 ms 632 KB Output is correct
23 Correct 6 ms 1272 KB Output is correct
24 Correct 5 ms 1016 KB Output is correct
25 Correct 5 ms 1148 KB Output is correct
26 Correct 5 ms 1144 KB Output is correct
27 Correct 5 ms 632 KB Output is correct
28 Correct 5 ms 632 KB Output is correct
29 Correct 5 ms 1272 KB Output is correct
30 Correct 5 ms 1272 KB Output is correct
31 Correct 5 ms 1144 KB Output is correct
32 Correct 5 ms 1020 KB Output is correct
33 Correct 5 ms 1272 KB Output is correct
34 Correct 5 ms 1272 KB Output is correct
35 Correct 5 ms 1272 KB Output is correct
36 Correct 94 ms 109048 KB Output is correct
37 Correct 55 ms 66168 KB Output is correct
38 Correct 30 ms 35448 KB Output is correct
39 Correct 50 ms 62584 KB Output is correct
40 Correct 69 ms 81016 KB Output is correct
41 Correct 27 ms 30200 KB Output is correct
42 Correct 20 ms 23672 KB Output is correct
43 Correct 26 ms 29560 KB Output is correct
44 Correct 12 ms 11384 KB Output is correct
45 Correct 27 ms 30840 KB Output is correct
46 Correct 19 ms 22008 KB Output is correct
47 Correct 28 ms 31484 KB Output is correct
48 Correct 21 ms 24696 KB Output is correct
49 Correct 25 ms 29560 KB Output is correct
50 Correct 15 ms 15480 KB Output is correct
51 Correct 26 ms 29560 KB Output is correct
52 Correct 11 ms 10616 KB Output is correct
53 Correct 23 ms 28920 KB Output is correct
54 Correct 13 ms 13816 KB Output is correct
55 Correct 23 ms 30840 KB Output is correct
56 Correct 16 ms 16888 KB Output is correct
57 Correct 24 ms 32120 KB Output is correct
58 Correct 16 ms 18936 KB Output is correct
59 Correct 115 ms 134520 KB Output is correct
60 Correct 59 ms 90620 KB Output is correct
61 Correct 118 ms 134520 KB Output is correct
62 Correct 61 ms 89592 KB Output is correct
63 Correct 136 ms 134572 KB Output is correct
64 Correct 61 ms 90616 KB Output is correct
65 Correct 102 ms 121464 KB Output is correct
66 Correct 90 ms 111480 KB Output is correct
67 Correct 90 ms 106744 KB Output is correct
68 Correct 103 ms 98680 KB Output is correct
69 Correct 110 ms 120184 KB Output is correct
70 Correct 108 ms 115192 KB Output is correct
71 Correct 113 ms 116420 KB Output is correct
72 Correct 111 ms 117752 KB Output is correct
73 Correct 84 ms 109048 KB Output is correct
74 Correct 94 ms 102008 KB Output is correct
75 Correct 97 ms 112760 KB Output is correct
76 Correct 119 ms 129304 KB Output is correct
77 Correct 115 ms 129272 KB Output is correct
78 Correct 89 ms 99728 KB Output is correct
79 Correct 85 ms 103160 KB Output is correct
80 Correct 114 ms 126728 KB Output is correct
81 Correct 86 ms 104312 KB Output is correct
82 Correct 88 ms 110464 KB Output is correct
83 Correct 118 ms 134520 KB Output is correct
84 Correct 91 ms 115240 KB Output is correct
85 Correct 98 ms 125328 KB Output is correct
86 Correct 98 ms 122744 KB Output is correct
87 Correct 99 ms 112760 KB Output is correct
88 Correct 134 ms 135800 KB Output is correct
89 Correct 130 ms 135928 KB Output is correct
90 Correct 86 ms 113912 KB Output is correct
91 Correct 147 ms 135840 KB Output is correct
92 Correct 120 ms 135928 KB Output is correct
93 Correct 86 ms 133112 KB Output is correct