import trimesh
import sys

def count_triangles(file_path):
    try:
        mesh = trimesh.load(file_path)
        print(f"{file_path}: {len(mesh.faces)} triangles")
    except Exception as e:
        print(f"Error reading {file_path}: {e}")

if __name__ == "__main__":
    for f in sys.argv[1:]:
        count_triangles(f)