TouchStone
  Please Login
Login Sign Up
 Homepage  Problem Set  Examinations  Submissions  Discussions  Statistics
  • Home
  • Problem Set
  • P4382
  • Problem
  • P4382「TJOI2015」线性代数
    Limits : Time Limit : - MS   Memory Limit : - KB
    Judgment Tips : 内存限制:256 MiB 时间限制:1000 ms
    Description

    Input Format

    RT

    Output Format

    RT

    Sample Input

    3
    1 2 1
    3 1 0
    1 2 3
    2 3 7

    Sample Output

    2

    Hint

    对于所有的数据,1≤N≤500