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How to use make_set method in Slash

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test_dsu.py

Source:test_dsu.py

...7from graph_algorithms.exception.graph_exception import DataStructureIsEmptyException8from graph_algorithms.exception.messages import data_structure_is_empty_message9def test_find_negative1():10    s = DSU()11    s.make_set(1)12    with pytest.raises(NotContainsElementException) as exception_info:13        s.find(5)14    assert str(exception_info.value) == not_contains_element_message()15def test_find_negative2():16    s = DSU()17    with pytest.raises(DataStructureIsEmptyException) as exception_info:18        s.find(11)19    assert str(exception_info.value) == data_structure_is_empty_message()20def test_find_positive():21    s = DSU()22    s.make_set(1)23    s.make_set(2)24    s.make_set(3)25    s.make_set(4)26    assert s.find(1) == 127    assert s.find(2) == 228    assert s.find(3) == 329    assert s.find(4) == 430def test_unite1():31    s = DSU()32    s.make_set(1)33    s.make_set(2)34    s.make_set(3)35    s.make_set(4)36    s.make_set(5)37    s.unite(1, 4)38    s.unite(3, 5)39    assert s.find(1) == s.find(4)40    assert s.find(5) == s.find(5)41    assert s.find(2) == 242def test_unite2():43    s = DSU()44    s.make_set(2)45    s.make_set(4)46    s.make_set(6)47    s.make_set(8)48    s.make_set(10)49    s.unite(2, 4)50    s.unite(6, 8)51    assert s.find(2) == s.find(4)52    assert s.find(6) == s.find(8)53    s.unite(8, 2)54    assert s.find(2) == s.find(8)55    assert s.find(2) == s.find(4)56    assert s.find(2) == s.find(6)57    s.unite(6, 10)58    assert s.find(2) == s.find(8)59    assert s.find(2) == s.find(4)60    assert s.find(2) == s.find(6)...

10216_Count_Circle_Groups_version1.py

Source:10216_Count_Circle_Groups_version1.py

1import sys2def input():3    return sys.stdin.readline().rstrip()4def find_parents(x,make_set):5    if make_set[x] == x:6        return x7    make_set[x] = find_parents(make_set[x],make_set)8    return make_set[x]9def union(x,y,make_set):10    X = find_parents(x,make_set)11    Y = find_parents(y,make_set)12    if X<Y:13        make_set[Y] = make_set[X]14    else:15        make_set[X] = make_set[Y]            16def solve():17    N = int(input())18    nodes = []19    make_set = [i for i in range(N)]20    nodes = [list(map(int,input().split())) for _ in range(N)]21    for a1 in range(N-1):22        for a2 in range(a1+1,N):23            x1,y1,r1 = nodes[a1]24            x2,y2,r2 = nodes[a2]25            if (x1-x2)**2  + (y1-y2)**2 <= (r1+r2)**2:26                if find_parents(a1,make_set) == find_parents(a2,make_set):continue27                union(a1,a2,make_set)28    ans = 029    for ind in range(N):30        if find_parents(ind,make_set) == ind:31            ans += 132    print(ans)33if __name__ == "__main__":34    T = int(input())35    for _ in range(T):...

disjoint_set_forest.py

Source:disjoint_set_forest.py

1# implementation of disjoint set data structure2# using forests and union by rank and path compression3		4class Disjoint_Set_Forest:5	def Make_Set(self,x):6		x.P = x7	8	def Find_Set(self,x):9		if x != x.P:10			x.P = self.Find_Set(x.P)11		return x.P12		13	def Link(self,x,y):14		if x.Rank > y.Rank:15			y.P = x16		else:17			x.P = y18			if x.Rank == y.Rank:19				y.Rank+=120	21	def Union(self,x,y):22		self.Link(self.Find_Set(x),self.Find_Set(y))23		24		25		26		27def main():28	from weighted_graph import Vertex29	30	DSF = Disjoint_Set_Forest()31 	a = Vertex("a")32	DSF.Make_Set(a)33	b = Vertex("b")34	DSF.Make_Set(b)35	c = Vertex("c")36	DSF.Make_Set(c)37	d = Vertex("d")38	DSF.Make_Set(d)39	e = Vertex("e")40	DSF.Make_Set(e)41	DSF.Union(a,b)42	DSF.Union(c,d)43	print(DSF.Find_Set(a).Key)44	DSF.Union(b,c)45	print(DSF.Find_Set(a).Key)46	47if __name__ == "__main__":...

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