local UnionFind={}

UnionFind.create=function(self,n)
    self.par={}
    self.group={}
    for i=1,n do
        self.par[i]=i
        self.group[i]={i}
    end
end

UnionFind.getroot=function(self,x)
    local nx=x
    while self.par[x]~=x do
        x=self.par[x]
    end
    while self.par[nx]~=x do
        self.par[nx],nx=x,self.par[nx]
    end
    return x
end

UnionFind.same=function(self,x,y)
    return self:getroot(x)==self:getroot(y)
end

UnionFind.unite=function(self,x,y)
    local rx=self:getroot(x)
    local ry=self:getroot(y)
    if rx==ry then
        return
    end
    if #self.group[rx]<#self.group[ry] then
        rx,ry=ry,rx
    end
    for _,v in pairs(self.group[ry]) do
        self.par[v]=rx
        table.insert(self.group[rx],v)
    end
    self.group[ry]={}
end

UnionFind.new=function(self,n)
    local obj={}
    setmetatable(obj,{__index=UnionFind})
    obj:create(n)
    return obj
end

----------

local n,m,q=io.read("*n","*n","*n","*l")
local map={}
for i=1,m do
    local edge=io.read()
    local a,b=edge:match("(%d+) (%d+)")
    map[edge]={tonumber(a),tonumber(b)}
end
local event={}
local bridge={}
for i=1,q do
    local edge=io.read()
    local c,d=edge:match("(%d+) (%d+)")
    event[edge]=true
    bridge[i]={tonumber(c),tonumber(d)}
end

local uf=UnionFind:new(n)
for edge,vertex in pairs(map) do
    if not event[edge] then
        local a,b=vertex[1],vertex[2]
        uf:unite(a,b)
    end
end

local result={}
local root=uf.par[1]
for _,vertex in pairs(uf.group[root]) do
    result[vertex]=-1
end
for i=q,1,-1 do
    local c,d=bridge[i][1],bridge[i][2]
    if not uf:same(c,d) then
        if uf:same(1,c) or not uf:same(1,d) then
            local root=uf.par[d]
            for _,vertex in pairs(uf.group[root]) do
                result[vertex]=i
            end
        elseif not uf:same(1,c) or uf:same(1,d) then
            local root=uf.par[c]
            for _,vertex in pairs(uf.group[root]) do
                result[vertex]=i
            end
        end
        uf:unite(c,d)
    end
end
for i=2,n do
    print(result[i])
end