import sys,bisect
from collections import deque
def I():return int(input())
def LI():return [int(i) for i in input().split()]
def LI_():return [int(i)-1 for i in input().split()]
def GI(V,E,ls=None,Directed=False,index=1):
    org_inp=[];g=[[] for i in range(V)]
    FromStdin=True if ls==None else False
    for i in range(E):
        if FromStdin:
            inp=LI()
            org_inp.append(inp)
        else:
            inp=ls[i]
        if len(inp)==2:
            a,b=inp;c=1
        else:
            a,b,c=inp
        if index==1:a-=1;b-=1
        aa=(a,c);bb=(b,c);g[a].append(bb)
        if not Directed:g[b].append(aa)
    return g,org_inp
def TI(n):return GI(n,n-1)
mo=10**9+7
inf=float('inf')
input=lambda: sys.stdin.readline().rstrip()

class Tree:
    def __init__(self,inp_size=None,init=True):
        self.LCA_init_stat=False
        self.ETtable=[]
        if init:
            self.stdin(inp_size)
        return

    def stdin(self,inp_size=None,index=1):
        if inp_size==None:
            self.size=int(input())
        else:
            self.size=inp_size
        self.edges,_=GI(self.size,self.size-1,index=index)
        return
    
    def listin(self,ls,index=0):
        self.size=len(ls)+1
        self.edges,_=GI(self.size,self.size-1,ls,index=index)
        return

    def __str__(self):
        return  str(self.edges)

    def dfs(self,x,func=lambda prv,nx,dist:prv+dist,root_v=0):
        q=deque()
        q.append(x)
        v=[-1]*self.size
        v[x]=root_v
        while q:
            c=q.pop()
            for nb,d in self.edges[c]:
                if v[nb]==-1:
                    q.append(nb)
                    v[nb]=func(v[c],nb,d)
        return v

    def EulerTour(self,x):
        q=deque()
        q.append(x)
        self.depth=[None]*self.size
        self.depth[x]=0
        self.ETtable=[]
        self.ETdepth=[]
        self.ETin=[-1]*self.size
        self.ETout=[-1]*self.size
        cnt=0
        while q:
            c=q.pop()
            if c<0:
                ce=~c
            else:
                ce=c
                for nb,d in self.edges[ce]:
                    if self.depth[nb]==None:
                        q.append(~ce)
                        q.append(nb)
                        self.depth[nb]=self.depth[ce]+1
            self.ETtable.append(ce)
            self.ETdepth.append(self.depth[ce])
            if self.ETin[ce]==-1:
                self.ETin[ce]=cnt
            else:
                self.ETout[ce]=cnt
            cnt+=1
        return
    
    def LCA_init(self,root):
        self.EulerTour(root)
        self.st=SparseTable(self.ETdepth,init_func=min,init_idl=inf)
        self.LCA_init_stat=True
        return
    
    def LCA(self,root,x,y):
        if self.LCA_init_stat==False:
            self.LCA_init(root)
        xin,xout=self.ETin[x],self.ETout[x]
        yin,yout=self.ETin[y],self.ETout[y]
        a=min(xin,yin)
        b=max(xout,yout,xin,yin)
        id_of_min_dep_in_et=self.st.query_id(a,b+1)
        return self.ETtable[id_of_min_dep_in_et]

class SparseTable:
    def __init__(self,ls,init_func=min,init_idl=float('inf')):
        self.func=init_func
        self.idl=init_idl
        self.size=len(ls)
        self.N0=self.size.bit_length()
        self.table=[ls[:]]
        self.index=[list(range(self.size))]
        self.lg=[0]*(self.size+1)
        
        for i in range(2,self.size+1):
            self.lg[i]=self.lg[i>>1]+1

        for i in range(self.N0):
            tmp=[self.func(self.table[i][j],self.table[i][min(j+(1<<i),self.size-1)]) for j in range(self.size)]
            tmp_id=[self.index[i][j] if self.table[i][j]==self.func(self.table[i][j],self.table[i][min(j+(1<<i),self.size-1)]) else self.index[i][min(j+(1<<i),self.size-1)] for j in range(self.size)]
            self.table+=[tmp]
            self.index+=[tmp_id]
    def query(self,l,r):
        N=self.lg[r-l]
        return self.func(self.table[N][l],self.table[N][r-(1<<N)])
    def query_id(self,l,r):
        N=self.lg[r-l]
        a,b=self.index[N][l],self.index[N][r-(1<<N)]
        if self.table[0][a]==self.func(self.table[N][l],self.table[N][r-(1<<N)]):
            b=a
        return b
ans=0

n,q=LI()
ls=deque()
col=dict()
e_len=dict()
for i in range(n-1):
    a,b,c,d=LI_()
    d+=1
    ls+=[(a,b,d)]
    
    eid=a*n+b if a<b else b*n+a
    col[eid]=c
    e_len[eid]=d
    
tr=Tree(init=False)
tr.listin(ls,index=0)
 
root=0
dist=tr.dfs(root)
tr.EulerTour(0)
dep=tr.depth
et=tr.ETtable
 
ad=[[0] for i in range(n)]
an=[[0] for i in range(n)]
index=[[] for i in range(n)]
for i in range(2*n-1-1):
    a,b=et[i],et[i+1]
    sign=1 if dep[a]<dep[b] else -1
    eid=a*n+b if a<b else b*n+a
    c=col[eid]
    dd=e_len[eid]*sign
    an[c]+=[an[c][-1]+sign]
    ad[c]+=[ad[c][-1]+dd]
    index[c]+=[i]
for i in range(n):
    ad[i]+=[ad[i][-1]]
    an[i]+=[an[i][-1]]

for i in range(q):
    x,y,u,v=LI_()
    y+=1
    lca=tr.LCA(root,u,v)
    path=dist[u]+dist[v]-dist[lca]*2
    
    ui=bisect.bisect_left(index[x],tr.ETin[u])
    vi=bisect.bisect_left(index[x],tr.ETin[v])
    ai=bisect.bisect_left(index[x],tr.ETin[lca])
    
    c_path=ad[x][ui]+ad[x][vi]-ad[x][ai]*2
    c_n=an[x][ui]+an[x][vi]-an[x][ai]*2
    ans=path-c_path+c_n*y
    print(ans)


Measured memory_bytes: 245492