HDu 4902 Nice boatセグメントツリー

// 
//  ,push_down 
// gcd  ， push_down 
#include
#include
#include
using namespace std ;
const int maxn = 1e5+10 ;
#define left v<<1
#define right v<<1|1
int h[maxn];
struct node
{
    int l , r ;
    int op ;
    int  x ;
    int value ;
}tree[maxn<<2] ;
int gcd(int a , int b)
{
    if(b == 0)
    return a ;
    return gcd(b , a%b) ;
}
void build(int l , int r , int v)
{
    tree[v].l = l ;
    tree[v].r = r ;
    tree[v].op = 0 ;
    if(l == r)
    {
        tree[v].value = h[l] ;
        return  ;
    }
    int mid = (l + r) >> 1 ;
    build(l , mid , left);
    build(mid+1 , r , right) ;
}
void push_down(int v)
{
    if(tree[v].l == tree[v].r)
    {
        if(tree[v].op == 1)
          tree[v].value = tree[v].x ;
        else if(tree[v].op == 2 && tree[v].value > tree[v].x)
          tree[v].value = gcd(tree[v].value , tree[v].x) ;
        tree[v].op = 0 ;
        return ;
    }
    if(tree[v].op == 1)
    {
        tree[left].op = tree[right].op = 1 ;
        tree[left].x = tree[right].x = tree[v].x ;
    }
    else if(tree[v].op == 2)
    {
        push_down(left) ;
        push_down(right) ;
        tree[left].op = tree[right].op = 2 ;
        tree[left].x = tree[right].x = tree[v].x ;
    }
    tree[v].op = 0 ;
}
void update(int l , int r , int v , int op ,int x)
{
    push_down(v) ;
    if(l <= tree[v].l && tree[v].r <= r)
    {
        tree[v].op = op ;
        tree[v].x = x ;
        return ;
    }
    int mid = (tree[v].l + tree[v].r) >> 1 ;
    if(l <= mid)
      update(l , r , left , op , x) ;
    if(r > mid)
      update(l , r , right , op , x) ;
}
int query(int pos , int v)
{
    push_down(v) ;
    if(tree[v].l == pos && tree[v].r == pos)
    return tree[v].value ;
    int mid = (tree[v].l + tree[v].r) >> 1 ;
    if(pos <= mid)return query(pos , left) ;
    if(pos > mid)return query(pos , right) ;
}
int main()
{
   // freopen("in.txt" ,"r" , stdin) ;
    int t ;
    scanf("%d" , &t) ;
    while(t--)
    {
        int n ;
        scanf("%d" , &n) ;
        for(int i = 1;i <= n;i++)
        scanf("%d" , &h[i]) ;
        int op , x , l , r ;
        build(1 , n , 1) ;
        int m ;
        scanf("%d" , &m) ;
        while(m--)
        {
            scanf("%d%d%d%d" , &op , &l , &r , &x) ;
            update(l , r , 1 , op , x) ;
        }
        for(int i = 1;i <= n;i++)
        printf("%d " , query(i , 1)) ;
        puts("") ;
    }
    return  0 ;
}