input:

10 23 3
2 10 1
2 6 1
6 9 1
7 9 1
6 7 1
3 6 1
1 3 1
1 6 2
6 10 1
2 9 1
4 9 2
4 7 2
3 10 2
3 9 1
6 8 1
7 8 2
3 5 1
5 9 1
8 9 2
3 8 2
1 5 2
1 4 1
5 10 2

output:

found a flow
found a flow
found a flow
found a flow
found a flow
found a flow
1
1
1
1
1
1
1
-1
-2
-2
-1
2
2
-2
1
2
1
1
2
-1
-1
1
-1

result:

wrong output format Expected integer, but "found" found