// Design Tic-Tac-Toe class TicTacToe { vector> a; int n; bool diagonal(int row, int col) { if (row != col && row != n-1-col) return false; int lc = 0, rc = 0; for (int i = 0; i < n; i++) { lc += a[i][i] == a[row][col]; rc += a[i][n-1-i] == a[row][col]; } return lc == n || rc == n; } public: /** Initialize your data structure here. */ TicTacToe(int n) : n(n), a(n, vector(n, 0)) {} /** Player {player} makes a move at ({row}, {col}). @param row The row of the board. @param col The column of the board. @param player The player, can be either 1 or 2. @return The current winning condition, can be either: 0: No one wins. 1: Player 1 wins. 2: Player 2 wins. */ int move(int row, int col, int player) { a[row][col] = player; int rc = 0, cc = 0; for (int i = 0; i < n; i++) { rc += a[row][i] == player; cc += a[i][col] == player; } return rc == n || cc == n || diagonal(row, col) ? player : 0; } }; /** * Your TicTacToe object will be instantiated and called as such: * TicTacToe obj = new TicTacToe(n); * int param_1 = obj.move(row,col,player); */