摘要：
CubeTime Limit: 2000/1000 MS (Java/Others)Memory Limit: 131072/65536 K (Java/Others)Total Submission(s): 1307Accepted Submission(s): 674Problem DescriptionGiven an N*N*N cube A, whose elements are either 0 or 1. A[i, j, k] means the number in the i-th row , j-th column and k-th layer. Initially we h 阅读全文
摘要：
MatrixTime Limit:3000MSMemory Limit:65536KTotal Submissions:16797Accepted:6312DescriptionGiven an N*N matrix A, whose elements are either 0 or 1. A[i, j] means the number in the i-th row and j-th column. Initially we have A[i, j] = 0 (1 14 #include15 #define N 100516 int c[N][N];17 int lowbit(int i) 阅读全文
摘要：
Mobile phonesTime Limit:5000MSMemory Limit:65536KTotal Submissions:13889Accepted:6451DescriptionSuppose that the fourth generation mobile phone base stations in the Tampere area operate as follows. The area is divided into squares. The squares form an S * S matrix with the rows and columns numbered 阅读全文