建议多提交几次。我第一次WA，第二次就过了。



> #include<iostream>
> using namespace std;
> 
> #define MAX 300
> 
> int rec[MAX][MAX];
> 
> void map(int row, int col, int time)
> {
> 	if(row < 0 || col < 0)
> 		return ;
> 	int i;
> 	for(i = time; i < col + time; i ++) {
> 		if(rec[time][i - 1] >= 27)
> 			rec[time][i - 1] -= 26;
> 		if(rec[time][i] != 0) return ;
> 		rec[time][i] = rec[time][i - 1]  + 1;
> 	}
> 	for(i = time + 1; i < row + time; i ++) {
> 		if(rec[i - 1][col + time - 1] >= 27)
> 			rec[i - 1][col + time - 1] -= 26;
> 		if(rec[i][col + time - 1]) return ;
> 		rec[i][col + time - 1] = rec[i - 1][col + time - 1] + 1;
> 	}
> 	for(i = time + col - 2; i >= time; i --) {
> 		if(rec[time + row - 1][i + 1] >= 27)
> 			rec[time + row - 1][i + 1] -= 26;
> 		if(rec[time + row - 1][i]) return ;
> 		rec[time + row - 1][i] = rec[time + row - 1][i + 1] + 1;
> 	}
> 	for(i = time + row - 2; i > time; i --) {
> 		if(rec[i + 1][time] >= 27)
> 			rec[i + 1][time] -= 26;
> 		if(rec[i][time]) return ;
> 		rec[i][time] = rec[i + 1][time] + 1;
> 	}
> 	map(row - 2, col - 2, time + 1);
> }
> 
> int main()
> {
> 	int row, col;
> 	cin >> row >> col;
> 	memset(rec, 0, sizeof(rec));
> 	map(row, col, 0);
> 	for(int i = 0; i < row; i ++) {
> 		for(int j = 0; j < col; j ++)
> 			printf("   %c", rec[i][j] + 64);
> 		cout << endl;
> 	}
> 	return 0;
> }