#include<iostream>
#include<cstdio>
#include<cstdlib>
#include<cstring>
#include<cmath>
#include<algorithm>
#include<set>
#include<map>
#include<vector>
#include<queue>
using namespace std;
#define MAX 120000
#define MOD 51061
#define lson (t[x].ch[0])
#define rson (t[x].ch[1])
inline int read()
{
    int x=0,t=1;char ch=getchar();
    while((ch<'0'||ch>'9')&&ch!='-')ch=getchar();
    if(ch=='-')t=-1,ch=getchar();
    while(ch<='9'&&ch>='0')x=x*10+ch-48,ch=getchar();
    return x*t;
}
struct Node
{
    int ch[2],ff;
    int rev,v,size;
    int sum,lc,lp;
}t[MAX];
int S[MAX],top;
int n,Q;
bool isroot(int x){return t[t[x].ff].ch[0]!=x&&t[t[x].ff].ch[1]!=x;}
void pushup(int x)
{
    t[x].sum=(t[lson].sum+t[rson].sum+t[x].v)%MOD;
    t[x].size=(t[lson].size+t[rson].size+1)%MOD;
}
void rotate(int x)
{
    int y=t[x].ff,z=t[y].ff;
    int k=t[y].ch[1]==x;
    if(!isroot(y))t[z].ch[t[z].ch[1]==y]=x;t[x].ff=z;
    t[y].ch[k]=t[x].ch[k^1];t[t[x].ch[k^1]].ff=y;
    t[x].ch[k^1]=y;t[y].ff=x;
    pushup(y);pushup(x);
}
void putrev(int x){swap(lson,rson);t[x].rev^=1;}
void putmul(int x,int w)
{
    t[x].lc=1ll*t[x].lc*w%MOD;t[x].lp=1ll*t[x].lp*w%MOD;
    t[x].v=1ll*t[x].v*w%MOD;t[x].sum=1ll*t[x].sum*w%MOD;
}
void putplu(int x,int w)
{
    (t[x].lp+=w)%=MOD;
    (t[x].v+=w)%=MOD;
    (t[x].sum+=1ll*w*t[x].size%MOD)%=MOD;
}
void pushdown(int x)
{
    if(t[x].rev)
    {
        if(lson)putrev(lson);if(rson)putrev(rson);
        t[x].rev=0;
    }
    if(t[x].lc!=1)
    {
        if(lson)putmul(lson,t[x].lc);if(rson)putmul(rson,t[x].lc);
        t[x].lc=1;
    }
    if(t[x].lp)
    {
        if(lson)putplu(lson,t[x].lp);if(rson)putplu(rson,t[x].lp);
        t[x].lp=0;
    }
}
void Splay(int x)
{
    S[top=1]=x;
    for(int i=x;!isroot(i);i=t[i].ff)S[++top]=t[i].ff;
    while(top)pushdown(S[top--]);
    while(!isroot(x))
    {
        int y=t[x].ff,z=t[y].ff;
        if(!isroot(y))
            (t[y].ch[1]==x)^(t[z].ch[1]==y)?rotate(x):rotate(y);
        rotate(x);
    }
}
void access(int x){for(int y=0;x;y=x,x=t[x].ff)Splay(x),t[x].ch[1]=y,pushup(x);}
void makeroot(int x){access(x);Splay(x);putrev(x);}
void split(int x,int y){makeroot(x);access(y);Splay(y);}
void cut(int x,int y){split(x,y);t[y].ch[0]=t[x].ff=0;pushup(y);}
void link(int x,int y){makeroot(x);t[x].ff=y;}
int findroot(int x){access(x);Splay(x);while(lson)x=lson;return x;}
int main()
{
    n=read();Q=read();
    for(int i=1;i<=n;++i)t[i].v=t[i].lc=1;
    for(int i=1;i<n;++i)link(read(),read());
    char ch[3];
    while(Q--)
    {
        scanf("%s",ch);
        int u=read(),v=read();
        if(ch[0]=='+'){split(u,v);putplu(v,read());}
        if(ch[0]=='-'){cut(u,v),link(read(),read());}
        if(ch[0]=='*'){split(u,v);putmul(v,read());}
        if(ch[0]=='/'){split(u,v);printf("%d\n",t[v].sum);}
    }
    return 0;
}