oj.uz

답안 #442292

# 제출 시각 아이디 문제 언어 결과 실행 시간 메모리
442292 2021-07-07T11:49:10 Z elazarkoren Game (eJOI20_game) C++17
0 / 100
 500 ms 8624 KB 
#include <iostream>
#include <vector>
#include <algorithm>
#include <set>
#include <map>
#define x first
#define y second
#define all(v) v.begin(), v.end()
#define chkmin(a, b) a = min(a, b)
#define chkmax(a, b) a = max(a, b)
using namespace std;
typedef vector<int> vi;
typedef vector<vi> vvi;
typedef pair<int, int> pii;
typedef vector<pii> vii;
typedef vector<bool> vb;
typedef vector<vb> vvb;

const int infinity = 1e9;

int n, m;

vvb hor_edge, ver_edge;

inline int Val(int i, int j) {
    return i + j * n;
}

inline bool Inside(int i, int j) {
    if (i < 0 || i >= n || j < 0 || j >= m) return false;
    return hor_edge[i][j] && hor_edge[i + 1][j] && ver_edge[i][j] && ver_edge[i][j + 1];
}

map<pair<pair<vvb, vvb>, int>, int> visited1;
map<pair<pair<vvb, vvb>, int>, int> visited2;

int Solve(bool player1, int s) {
    if (player1) {
        auto it = visited1.find({{hor_edge, ver_edge}, s});
        if (it != visited1.end()) {
            return it->y;
        }
    } else {
        auto it = visited2.find({{hor_edge, ver_edge}, s});
        if (it != visited2.end()) {
            return it->y;
        }
    }
    int ans = player1 ? -infinity : infinity;
    for (int i = 0; i <= n; i++) {
        for (int j = 0; j < m; j++) {
            if (!hor_edge[i][j]) {
                hor_edge[i][j] = true;
                bool b1 = Inside(i, j);
                bool b2 = Inside(i - 1, j);
                if (player1) s += b1 + b2;
                else s -= b1 + b2;
                int val = Solve((b1 || b2) ? player1 : !player1, s);
                if (player1) {
                    s -= b1 + b2;
                    chkmax(ans, val);
                }
                else {
                    s += b1 + b2;
                    chkmin(ans, val);
                }
                hor_edge[i][j] = false;
            }
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j <= m; j++) {
            if (!ver_edge[i][j]) {
                ver_edge[i][j] = true;
                bool b1 = Inside(i, j);
                bool b2 = Inside(i, j - 1);
                if (player1) s += b1 + b2;
                else s -= b1 + b2;
                int val = Solve((b1 || b2) ? player1 : !player1, s);
                if (player1) {
                    s -= b1 + b2;
                    chkmax(ans, val);
                } else {
                    s += b1 + b2;
                    chkmin(ans, val);
                }
                ver_edge[i][j] = false;
            }
        }
    }

    if (ans == -infinity || ans == infinity) {
        if (player1) {
            visited1[{{hor_edge, ver_edge}, s}] = s;
        } else {
            visited2[{{hor_edge, ver_edge}, s}] = s;
        }
        return s;
    }
    if (player1) {
        visited1[{{hor_edge, ver_edge}, s}] = ans;
    } else {
        visited2[{{hor_edge, ver_edge}, s}] = ans;
    }
    return ans;
}

int main() {
    ios_base::sync_with_stdio(false);
    cin.tie(0);
    cin >> n >> m;
    hor_edge.resize(n + 1, vb(m)), ver_edge.resize(n, vb(m + 1));
    for (int i = 0; i <= n; i++) {
        for (int j = 0; j < m; j++) {
            char c;
            cin >> c;
            hor_edge[i][j] = c == '1';
        }
    }
    for (int i = 0; i < n; i++) {
        for (int j = 0; j <= m; j++) {
            char c;
            cin >> c;
            ver_edge[i][j] = c == '1';
        }
    }
    cout << Solve(true, 0);
    return 0;
}
//3 2
//11
//11
//01
//11
//000
//100
//100

Subtask #1
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Execution timed out 1079 ms 8624 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #2
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1089 ms 3420 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #3
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 3 ms 332 KB Output is correct
2 Correct 21 ms 704 KB Output is correct
3 Correct 20 ms 636 KB Output is correct
4 Correct 7 ms 460 KB Output is correct
5 Execution timed out 1092 ms 3972 KB Time limit exceeded
6 Halted 0 ms 0 KB -

Subtask #4
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Execution timed out 1094 ms 8232 KB Time limit exceeded
2 Halted 0 ms 0 KB -

Subtask #5
0 / 20.0

# 결과 실행 시간 메모리 Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 332 KB Output is correct
4 Correct 1 ms 332 KB Output is correct
5 Execution timed out 1089 ms 3420 KB Time limit exceeded
6 Halted 0 ms 0 KB -