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#include <iostream> #include <cstdio> #include <cstring> using namespace std; char board[3][3]; int main(){ memset(board, 0, sizeof(board)); string line; for (int i = 0; i < 3; i++) { cin >> line; if (line.size() > 3) { cout << "illegal" << endl; return 0; } for (int j = 0; j < 3; j++) { board[i][j] = line[j]; } } //judge legal(partial) int oCnt = 0,xCnt = 0; for (int i = 0;i < 3; i++) { for (int j = 0; j < 3; j++) { switch (board[i][j]) { case '0': oCnt++; break; case 'X': xCnt++; break; default: break; } } } if (!(xCnt - oCnt == 1 || xCnt == oCnt)) { cout << "illegal" << endl; return 0; } //judge who is next int nextis = 0; if (oCnt == xCnt) { nextis = 1; }else{ nextis = 2; } //judge game completion bool oWin = false,xWin = false; for (int r = 0; r < 3; r++) { if (board[r][0] == board[r][1] && board[r][1] == board[r][2] && board[r][0] == board[r][2]) { if (board[r][0] == '0') { oWin = true; } if (board[r][0] == 'X') { xWin = true; } } if (board[0][r] == board[1][r] && board[1][r] == board[2][r] && board[2][r] == board[0][r]) { if (board[0][r] == '0') { oWin = true; } if (board[0][r] == 'X') { xWin = true; } } } if (board[0][0] == board[1][1] && board[1][1] == board[2][2] && board[0][0] == board[2][2]) { if (board[0][0] == '0') { oWin = true; } if (board[0][0] == 'X') { xWin = true; } } if (board[0][2] == board[1][1] && board[1][1] == board[2][0] && board[0][2] == board[2][0]) { if (board[1][1] == '0') { oWin = true; } if (board[1][1] == 'X') { xWin = true; } }//judge complete if (xWin && oWin) { cout << "illegal" << endl; return 0; }//cannot both win else if (!xWin && !oWin) { if (xCnt+oCnt == 9) { cout << "draw" << endl; return 0; } }//if full,good game else if(xWin && xCnt > oCnt){ cout << "the first player won" << endl; return 0; } else if(oWin && xCnt == oCnt){ cout << "the second player won" << endl; return 0; }else{ cout << "illegal" << endl; return 0; } //game still not end if (nextis == 1) { cout << "first" << endl; return 0; } if (nextis == 2) { cout << "second" << endl; return 0; } return 0; } |
模拟题，这个题我WA了一下的原因是忘记了X的数量始终比O多一个，即使是赢了，也要是在棋盘合法的前提下。
