Is the matrix symmetric?
A matrix is called symmetric if the opposite numbers around the main diagonal are equal.
Given an
The first line of the input contains a single integer
n. The next n lines contain n integers which represent the matrix.The output of the program should contain a single line -
yes if the matrix is symmetric and no otherwise. Input | Output |
3
0 1 2
1 8 3
2 3 4 | yes |
3
0 0 0
0 0 0
1 0 1 | no |
Constraints
Time limit: 2 seconds
Memory limit: 512 MB
Output limit: 1 MB