Mongge
Exercises
Collections
Editor
Català
English
Español
Euskera
Italiano
Sign in
Sign up
Sign up
DISTANCIAS
EDUARDO GONZALEZ
3/7/15
1,421
Follow
Answer
Solution
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
}
r
2
s
2
r
1
s
1
vα
hα
c
2
c
2
c
1
c
1
URL of the exercise
Embed code