Submission #1307395

#	Time	Username	Problem	Language	Result	Execution time	Memory
1307395		lasandra	Tracks in the Snow (BOI13_tracks)	C++20	Compilation error	0 ms	0 KiB

tracks

n, m = map(int, input().split())
mark = set()
for _ in range(n):
    listing = input().split()
    # print(listing)
    for x in listing:
        mark.add(x)
print(len(mark) - 1)

Compilation message (stderr)

tracks.cpp:5:7: error: invalid preprocessing directive #print
    5 |     # print(listing)
      |       ^~~~~
tracks.cpp:1:1: error: 'n' does not name a type
    1 | n, m = map(int, input().split())
      | ^