DEEPSEEK版五子棋（人机）

#include<bits/stdc++.h>
using namespace std;

int a[31][31]; // 棋盘：0空，1玩家，2电脑
int c, k;      // c行数，k列数

// 检查在 (x, y) 落子 player 后是否形成五子连珠
bool checkWin(int x, int y, int player) {
    int dirs[4][2] = {{0,1}, {1,0}, {1,1}, {1,-1}};
    for (int d = 0; d < 4; d++) {
        int dx = dirs[d][0], dy = dirs[d][1];
        int count = 1;
        // 正方向
        for (int i = 1; i < 5; i++) {
            int nx = x + i * dx, ny = y + i * dy;
            if (nx < 1 || nx > c || ny < 1 || ny > k || a[nx][ny] != player) break;
            count++;
        }
        // 反方向
        for (int i = 1; i < 5; i++) {
            int nx = x - i * dx, ny = y - i * dy;
            if (nx < 1 || nx > c || ny < 1 || ny > k || a[nx][ny] != player) break;
            count++;
        }
        if (count >= 5) return true;
    }
    return false;
}

// 电脑下棋：先赢，再阻挡，最后随机
void computerMove() {
    int i, j;
    // 1. 尝试自己获胜
    for (i = 1; i <= c; i++) {
        for (j = 1; j <= k; j++) {
            if (a[i][j] == 0) {
                a[i][j] = 2;
                if (checkWin(i, j, 2)) return;
                a[i][j] = 0;
            }
        }
    }
    // 2. 阻挡玩家获胜
    for (i = 1; i <= c; i++) {
        for (j = 1; j <= k; j++) {
            if (a[i][j] == 0) {
                a[i][j] = 1;
                if (checkWin(i, j, 1)) {
                    a[i][j] = 2;
                    return;
                }
                a[i][j] = 0;
            }
        }
    }
    // 3. 随机选择空位
    int empties[900][2];
    int cnt = 0;
    for (i = 1; i <= c; i++)
        for (j = 1; j <= k; j++)
            if (a[i][j] == 0) {
                empties[cnt][0] = i;
                empties[cnt][1] = j;
                cnt++;
            }
    if (cnt > 0) {
        int idx = rand() % cnt;
        a[empties[idx][0]][empties[idx][1]] = 2;
    }
}

// 打印棋盘
void printBoard() {
    int i, j;
    for (i = 1; i <= c; i++) {
        for (j = 1; j <= k; j++) {
            if (a[i][j] == 0) cout << "- ";
            else if (a[i][j] == 1) cout << "O ";
            else cout << "X ";
        }
        cout << endl;
    }
}

int main() {
    srand((unsigned)time(0));
    cout << "黄绿色爆炸生物五子棋程序！" << endl;
    cout << "请输入棋盘的长和宽（长和宽在5以上30以内）：" << endl;

    while (true) {
        cin >> c >> k;
        if (c <= 30 && k <= 30 && c >= 5 && k >= 5) break;
        cout << "输入错误，请重新输入：" << endl;
    }

    int total = c * k;
    for (int turn = 1; turn <= total; turn++) {
        printBoard();

        if (turn % 2 == 1) { // 玩家
            cout << "现在轮到玩家下，请问下在哪里？（输入行和列）" << endl;
            int x, y;
            while (true) {
                cin >> x >> y;
                if (x < 1 || x > c || y < 1 || y > k) {
                    cout << "出界了，请重新输入：" << endl;
                } else if (a[x][y] != 0) {
                    cout << "重叠了，请重新输入：" << endl;
                } else break;
            }
            a[x][y] = 1;
            if (checkWin(x, y, 1)) {
                printBoard();
                cout << "恭喜玩家胜利！" << endl;
                return 0;
            }
        } else { // 电脑
            cout << "现在轮到电脑下..." << endl;
            computerMove();

            bool win = false;
            for (int x = 1; x <= c && !win; x++) {
                for (int y = 1; y <= k && !win; y++) {
                    if (a[x][y] == 2 && checkWin(x, y, 2)) {
                        win = true;
                    }
                }
            }
            if (win) {
                printBoard();
                cout << "恭喜电脑胜利！" << endl;
                return 0;
            }
        }
    }

    printBoard();
    cout << "平局！" << endl;
    return 0;
}