This is one solution to the checker challenge. Write a program that finds all unique solution sequences to the Checker Challenge (with ever growing values of N). Print the solutions using the column notation described above. Print the the first three solutions in numerical order, as if the c...
(最后一位算出来 由于n行每一行都要有一个,那么所有的皇后的位置之和必然为n×(n+1)/2,在dfs的时候记录已经枚举的皇后位置之和,那么最后一个可以直接算出来。这样的话最后一个点0.907s。 经过测试,这种算法是不可行的。要看RP (位运算 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20...