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답안 #257398

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
257398 2020-08-04T08:32:20 Z dolphingarlic 유괴 2 (JOI17_abduction2) C++14
100 / 100
 3235 ms 257940 KB 
#include <bits/stdc++.h>
typedef long long ll;
using namespace std;

int pw[17];
map<tuple<int, int, int>, ll> dp;
int n, m, h[50001][17], v[50001][17];

ll dfs(int x, int y, int dir) {
    if (dp.count({x, y, dir})) return dp[{x, y, dir}];
    ll &ans = dp[{x, y, dir}];
    if (dir & 1) { // Up or down (x changes)
        int sign = dir - 2;
        int nxt_x = x;
        for (int i = 16; ~i; i--) {
            int tmp_x = nxt_x + (1 << i) * sign - sign;
            if (tmp_x < 1 || tmp_x > n) continue;
            if ((sign == 1 ? h[nxt_x][i] : h[tmp_x][i]) > v[y][0]) continue;
            nxt_x = tmp_x + sign;
        }
        if (nxt_x < 1 || nxt_x > n) return ans = abs(nxt_x - sign - x);
        return ans = abs(nxt_x - x) + max(dfs(nxt_x, y, 0), dfs(nxt_x, y, 2));
    } else { // Left or right (y changes)
        int sign = dir - 1;
        int nxt_y = y;
        for (int i = 16; ~i; i--) {
            int tmp_y = nxt_y + (1 << i) * sign - sign;
            if (tmp_y < 1 || tmp_y > m) continue;
            if ((sign == 1 ? v[nxt_y][i] : v[tmp_y][i]) > h[x][0]) continue;
            nxt_y = tmp_y + sign;
        }
        if (nxt_y < 1 || nxt_y > m) return ans = abs(nxt_y - sign - y);
        return ans = abs(nxt_y - y) + max(dfs(x, nxt_y, 1), dfs(x, nxt_y, 3));
    }
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    pw[0] = 1;
    for (int i = 1; i < 17; i++) pw[i] = pw[i - 1] << 1;

    int q;
    cin >> n >> m >> q;

    for (int i = 1; i <= n; i++) cin >> h[i][0];
    for (int i = 1; i <= m; i++) cin >> v[i][0];
    for (int j = 1; j < 17; j++) {
        for (int i = 1; i <= n - pw[j] + 1; i++) {
            h[i][j] = max(h[i][j - 1], h[i + pw[j - 1]][j - 1]);
        }
        for (int i = 1; i <= m - pw[j] + 1; i++) {
            v[i][j] = max(v[i][j - 1], v[i + pw[j - 1]][j - 1]);
        }
    }

    while (q--) {
        int x, y;
        cin >> x >> y;
        ll ans = 0;
        if (x < n) ans = max(ans, dfs(x + 1, y, 3) + 1);
        if (y < m) ans = max(ans, dfs(x, y + 1, 2) + 1);
        if (x > 1) ans = max(ans, dfs(x - 1, y, 1) + 1);
        if (y > 1) ans = max(ans, dfs(x, y - 1, 0) + 1);
        cout << ans << '\n';
    }
    return 0;
}

Subtask #1
13.0 / 13.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 KB Output is correct
10 Correct 1 ms 384 KB Output is correct
11 Correct 0 ms 384 KB Output is correct

Subtask #2
10.0 / 10.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 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 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 640 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 4 ms 1024 KB Output is correct
20 Correct 5 ms 1152 KB Output is correct
21 Correct 4 ms 1024 KB Output is correct
22 Correct 8 ms 1408 KB Output is correct

Subtask #3
17.0 / 17.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 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 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 640 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 4 ms 1024 KB Output is correct
20 Correct 5 ms 1152 KB Output is correct
21 Correct 4 ms 1024 KB Output is correct
22 Correct 8 ms 1408 KB Output is correct
23 Correct 21 ms 7040 KB Output is correct
24 Correct 20 ms 7040 KB Output is correct
25 Correct 21 ms 7040 KB Output is correct
26 Correct 21 ms 7040 KB Output is correct
27 Correct 20 ms 7040 KB Output is correct
28 Correct 52 ms 13688 KB Output is correct
29 Correct 25 ms 7932 KB Output is correct
30 Correct 151 ms 17728 KB Output is correct
31 Correct 179 ms 20984 KB Output is correct
32 Correct 25 ms 7544 KB Output is correct
33 Correct 60 ms 10360 KB Output is correct

Subtask #4
4.0 / 4.0

# 결과 실행 시간 메모리 Grader output
1 Correct 5 ms 1024 KB Output is correct
2 Correct 4 ms 1024 KB Output is correct
3 Correct 5 ms 1024 KB Output is correct
4 Correct 6 ms 1024 KB Output is correct
5 Correct 4 ms 896 KB Output is correct
6 Correct 4 ms 1024 KB Output is correct
7 Correct 3 ms 1024 KB Output is correct
8 Correct 8 ms 1460 KB Output is correct
9 Correct 11 ms 1408 KB Output is correct
10 Correct 8 ms 1408 KB Output is correct
11 Correct 9 ms 1664 KB Output is correct

Subtask #5
56.0 / 56.0

# 결과 실행 시간 메모리 Grader output
1 Correct 0 ms 384 KB Output is correct
2 Correct 0 ms 384 KB Output is correct
3 Correct 0 ms 384 KB Output is correct
4 Correct 0 ms 384 KB Output is correct
5 Correct 1 ms 384 KB Output is correct
6 Correct 0 ms 384 KB Output is correct
7 Correct 1 ms 384 KB Output is correct
8 Correct 0 ms 384 KB Output is correct
9 Correct 0 ms 384 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 640 KB Output is correct
13 Correct 2 ms 640 KB Output is correct
14 Correct 2 ms 640 KB Output is correct
15 Correct 1 ms 640 KB Output is correct
16 Correct 1 ms 640 KB Output is correct
17 Correct 1 ms 640 KB Output is correct
18 Correct 1 ms 640 KB Output is correct
19 Correct 4 ms 1024 KB Output is correct
20 Correct 5 ms 1152 KB Output is correct
21 Correct 4 ms 1024 KB Output is correct
22 Correct 8 ms 1408 KB Output is correct
23 Correct 21 ms 7040 KB Output is correct
24 Correct 20 ms 7040 KB Output is correct
25 Correct 21 ms 7040 KB Output is correct
26 Correct 21 ms 7040 KB Output is correct
27 Correct 20 ms 7040 KB Output is correct
28 Correct 52 ms 13688 KB Output is correct
29 Correct 25 ms 7932 KB Output is correct
30 Correct 151 ms 17728 KB Output is correct
31 Correct 179 ms 20984 KB Output is correct
32 Correct 25 ms 7544 KB Output is correct
33 Correct 60 ms 10360 KB Output is correct
34 Correct 5 ms 1024 KB Output is correct
35 Correct 4 ms 1024 KB Output is correct
36 Correct 5 ms 1024 KB Output is correct
37 Correct 6 ms 1024 KB Output is correct
38 Correct 4 ms 896 KB Output is correct
39 Correct 4 ms 1024 KB Output is correct
40 Correct 3 ms 1024 KB Output is correct
41 Correct 8 ms 1460 KB Output is correct
42 Correct 11 ms 1408 KB Output is correct
43 Correct 8 ms 1408 KB Output is correct
44 Correct 9 ms 1664 KB Output is correct
45 Correct 27 ms 7544 KB Output is correct
46 Correct 27 ms 7552 KB Output is correct
47 Correct 28 ms 7520 KB Output is correct
48 Correct 38 ms 7544 KB Output is correct
49 Correct 33 ms 7544 KB Output is correct
50 Correct 58 ms 14076 KB Output is correct
51 Correct 69 ms 14840 KB Output is correct
52 Correct 227 ms 26316 KB Output is correct
53 Correct 233 ms 25468 KB Output is correct
54 Correct 217 ms 24440 KB Output is correct
55 Correct 319 ms 33784 KB Output is correct
56 Correct 3235 ms 257940 KB Output is correct
57 Correct 760 ms 72572 KB Output is correct
58 Correct 707 ms 69240 KB Output is correct
59 Correct 758 ms 68664 KB Output is correct