triangles
âïžð«ð
@triangles
5
ãã©ããŒäž
1
ãã©ãã¯ãŒ
ãããã£ãŒã«å ±æ
ãããã
0åã®ãããã
·
ããŒã¯æ° 0
ããŒã¯æ°
äœæããããããããããŸãã