You can use https://www.onlinegdb.com/online_c_compiler for testing before you send to me. it has same enviroment as my school website.
test case 1 in:
4 2 2
0 1
2 3
0 7 3 2
6 0 1 0
8 2 0 9
5 1 4 0
out:
6
test case 2
in:
5 1 2
0
1 3
0 5 3 0 0
8 0 9 2 2
3 6 0 1 2
7 9 9 0 3
0 1 8 7 0
out:
8
test case 3
10 3 4
4 2 7
0 9 3 5
0 1 3 5 8 4 0 9 7 9
0 0 7 5 2 7 8 9 5 7
2 1 0 4 8 5 7 0 7 5
6 7 2 0 6 9 0 1 8 4
6 1 5 2 0 1 7 8 6 2
2 0 3 5 8 0 2 9 7 8
9 0 1 7 6 1 0 7 5 1
5 8 7 1 0 5 5 0 7 3
4 0 8 0 6 3 6 5 0 9
2 5 2 1 3 5 9 0 1 0
out:
85
test case 4:
5 1 1
0
4
0 0 0 20 0
0 0 0 5 10
0 0 0 4 10
10 2 6 0 0
0 0 0 10 0
out:
8
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