oj.uz

Submission #648445

# Submission time Handle Problem Language Result Execution time Memory
648445 2022-10-06T13:47:13 Z Kirill22 Game (eJOI20_game) C++17
80 / 100
 500 ms 19680 KB 
#include "bits/stdc++.h"

using namespace std;

map<vector<int>, int> dp;

vector<int> a, b;

int solve(int A, int B, int c, int d) {
    if (A == (int) a.size() && B == (int) b.size() && c == 0 && d == 0) {
        return 0;
    }
    auto all = {A, B, c, d};
    vector<int> upda, updb;
    if (A < a.size()) upda = {A};
    if (B < b.size()) updb = {B};
    if (dp.find(all) == dp.end()) {
        dp[all] = (int) -1e9;
        for (auto i : upda) {
            dp[all] = max(dp[all], -(a[i] - 4) - solve(A + 1, B, c, d + 1));
        }
        for (auto i : updb) {
            auto tc = c, td = d;
            int L = b[i] / 2, R = b[i] - L, res = 0;
            if (L >= 2) {
                tc++;
                res += L - 2;
            } else if (L) {
                res++;
            }
            if (R >= 2) {
                tc++;
                res += R - 2;
            } else if (R) {
                res++;
            }
            dp[all] = max(dp[all], -res - solve(A, B + 1, tc, td));
        }
        if (c) {
            dp[all] = max(dp[all], abs(2 + solve(A, B, c - 1, d)));
        }
        if (d) {
            dp[all] = max(dp[all], abs(4 + solve(A, B, c, d - 1)));
        }
    }
    return dp[all];
}

int main() {
    ios_base::sync_with_stdio(0);
    cin.tie(0);
    cout.tie(0);
    int n, m;
    cin >> n >> m;
    auto get = [&] (int i, int j) {
        return i * m + j;
    };
    auto check = [&] (int i, int j) {
        return (i >= 0 && i < n && j >= 0 && j < m);
    };
    vector<vector<int>> g(n * m);
    vector<int> cnt(n * m, 4);
    auto add = [&] (int a, int b, int c, int d) {
        if (check(a, b)) {
            cnt[get(a, b)]--;
        }
        if (check(c, d)) {
            cnt[get(c, d)]--;
        }
        if (check(a, b) && check(c, d)) {
            g[get(a, b)].push_back(get(c, d));
            g[get(c, d)].push_back(get(a, b));
        }
    };
    for (int i = 0; i < n + 1; i++) {
        for (int j = 0; j < m; j++) {
            char c;
            cin >> c;
            if (c == '0') {
                add(i - 1, j, i, j);
            }
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j < m + 1; j++) {
            char c;
            cin >> c;
            if (c == '0') {
                add(i, j - 1, i, j);
            }
        }
    }
    vector<int> used(n * m);
    int c = 0, was;
    function<void(int)> dfs = [&] (int v) {
        used[v] = 1;
        if ((int) g[v].size() == 1) {
            was = 1;
        }
        c++;
        for (auto u : g[v]) {
            if (!used[u]) {
                dfs(u);
            }
        }
    };
    vector<int> A, B, C, D;
    for (int i = 0; i < n * m; i++) {
        if (cnt[i] != 4 && !used[i]) {
            c = 0, was = 0;
            dfs(i);
            if (was || c == 1) {
                B.push_back(c);
            } else {
                A.push_back(c);
            }
        }
    }
    sort(A.begin(), A.end());
    sort(B.begin(), B.end());
    a = A, b = B;
    cout << solve(0, 0, 0, 0);
}

Compilation message

game.cpp: In function 'int solve(int, int, int, int)':
game.cpp:15:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   15 |     if (A < a.size()) upda = {A};
      |         ~~^~~~~~~~~~
game.cpp:16:11: warning: comparison of integer expressions of different signedness: 'int' and 'std::vector<int>::size_type' {aka 'long unsigned int'} [-Wsign-compare]
   16 |     if (B < b.size()) updb = {B};
      |         ~~^~~~~~~~~~

Subtask #1
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 320 KB Output is correct
6 Correct 0 ms 316 KB Output is correct
7 Correct 1 ms 316 KB Output is correct
8 Correct 1 ms 212 KB Output is correct

Subtask #2
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 320 KB Output is correct
12 Correct 1 ms 316 KB Output is correct
13 Correct 1 ms 320 KB Output is correct
14 Correct 1 ms 320 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct

Subtask #3
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 0 ms 212 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 316 KB Output is correct
18 Correct 0 ms 320 KB Output is correct
19 Correct 1 ms 320 KB Output is correct
20 Correct 0 ms 212 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 1 ms 324 KB Output is correct
24 Correct 1 ms 312 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 0 ms 212 KB Output is correct

Subtask #4
20.0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 320 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 316 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 1 ms 296 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 316 KB Output is correct

Subtask #5
0 / 20.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 320 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 320 KB Output is correct
10 Correct 0 ms 316 KB Output is correct
11 Correct 1 ms 316 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 212 KB Output is correct
16 Correct 1 ms 212 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 1 ms 320 KB Output is correct
20 Correct 1 ms 316 KB Output is correct
21 Correct 1 ms 320 KB Output is correct
22 Correct 1 ms 320 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 0 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 340 KB Output is correct
34 Correct 0 ms 212 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 1 ms 212 KB Output is correct
37 Correct 1 ms 212 KB Output is correct
38 Correct 1 ms 340 KB Output is correct
39 Correct 1 ms 340 KB Output is correct
40 Correct 1 ms 212 KB Output is correct
41 Correct 1 ms 316 KB Output is correct
42 Correct 0 ms 320 KB Output is correct
43 Correct 1 ms 320 KB Output is correct
44 Correct 0 ms 212 KB Output is correct
45 Correct 1 ms 212 KB Output is correct
46 Correct 1 ms 320 KB Output is correct
47 Correct 1 ms 324 KB Output is correct
48 Correct 1 ms 312 KB Output is correct
49 Correct 0 ms 212 KB Output is correct
50 Correct 0 ms 212 KB Output is correct
51 Correct 1 ms 212 KB Output is correct
52 Correct 1 ms 212 KB Output is correct
53 Correct 1 ms 320 KB Output is correct
54 Correct 1 ms 212 KB Output is correct
55 Correct 1 ms 212 KB Output is correct
56 Correct 1 ms 212 KB Output is correct
57 Correct 1 ms 340 KB Output is correct
58 Correct 1 ms 316 KB Output is correct
59 Correct 1 ms 340 KB Output is correct
60 Correct 1 ms 340 KB Output is correct
61 Correct 1 ms 212 KB Output is correct
62 Correct 1 ms 340 KB Output is correct
63 Correct 1 ms 296 KB Output is correct
64 Correct 1 ms 212 KB Output is correct
65 Correct 1 ms 316 KB Output is correct
66 Correct 218 ms 8164 KB Output is correct
67 Correct 404 ms 13900 KB Output is correct
68 Correct 287 ms 10904 KB Output is correct
69 Correct 256 ms 8136 KB Output is correct
70 Correct 196 ms 7500 KB Output is correct
71 Correct 295 ms 11080 KB Output is correct
72 Correct 390 ms 13112 KB Output is correct
73 Correct 384 ms 15632 KB Output is correct
74 Correct 310 ms 11732 KB Output is correct
75 Correct 423 ms 14156 KB Output is correct
76 Correct 240 ms 9456 KB Output is correct
77 Correct 277 ms 10228 KB Output is correct
78 Correct 328 ms 12556 KB Output is correct
79 Correct 330 ms 12416 KB Output is correct
80 Execution timed out 581 ms 19680 KB Time limit exceeded
81 Halted 0 ms 0 KB -