【luogu P2023 [AHOI2009]维护序列】 题解

题目链接：https://www.luogu.org/problemnew/show/P2023

把P3373改一改直接粘过来就A

 #include <iostream>
 #include <cstdio>
 #include <algorithm>
 #include <cstring>
 #define lson left, mid, rt<<1
 #define rson mid+1, right, rt<<1|1
 #define ll long long
 using namespace std;
 const int maxn = ;
 ll n, m, addlazy[maxn<<], mullazy[maxn<<], ans[maxn<<], mod, x,y,k;
 void PushUP(ll rt)
 {
     ans[rt] = (ans[rt<<] + ans[rt<<|])%mod;
 }
 void build(ll left, ll right, ll rt)
 {
     addlazy[rt] = ;
     mullazy[rt] = ;
     if(right == left)
     {
         scanf("%d",&ans[rt]);
         return ;
     }
     ll mid = (left+right) >> ;
     build(lson);
     build(rson);
     PushUP(rt);
 }
 void PushDOWN(ll rt, ll mid, ll left, ll right)
 {
         mullazy[rt<<]=(mullazy[rt<<]*mullazy[rt])%mod;
         mullazy[rt<<|]=(mullazy[rt<<|]*mullazy[rt])%mod;
         addlazy[rt<<]=(addlazy[rt<<]*mullazy[rt])%mod;
         addlazy[rt<<|]=(addlazy[rt<<|]*mullazy[rt])%mod;
         ans[rt<<]=(ans[rt<<]*mullazy[rt])%mod;
         ans[rt<<|]=(ans[rt<<|]*mullazy[rt])%mod;
         mullazy[rt]=;
         addlazy[rt<<]=(addlazy[rt<<]+addlazy[rt])%mod;
         addlazy[rt<<|]=(addlazy[rt<<|]+addlazy[rt])%mod;
         ans[rt<<]=(ans[rt<<]+(mid-left+)*addlazy[rt])%mod;
         ans[rt<<|]=(ans[rt<<|]+(right-mid)*addlazy[rt])%mod;
         addlazy[rt]=;
 }
 void mulupdate(ll l, ll r, ll add, ll left, ll right, ll rt)
 {
     if(l<=left&&r>=right)
     {
         addlazy[rt] = (addlazy[rt]*add)%mod;
         mullazy[rt] = (mullazy[rt]*add)%mod;
         ans[rt] = (add*ans[rt])%mod;
         return;
     }
     ll mid = (left+right)>>;
     if(mullazy[rt]!=||addlazy[rt]>=) PushDOWN(rt,mid,left,right);
     if(l<=mid) mulupdate(l,r,add,lson);
     if(r>mid)  mulupdate(l,r,add,rson);
     PushUP(rt);
 }
 void addupdate(ll l, ll r, ll add, ll left, ll right, ll rt)
 {
     if(l<=left&&r>=right)
     {
         addlazy[rt]= (addlazy[rt]+add)%mod;
         ans[rt] = (ans[rt] + add*(right-left+))%mod;
         return;
     }
     ll mid = (left+right)>>;
     if(mullazy[rt]!=||addlazy[rt]>=) PushDOWN(rt,mid,left,right);
     if(l<=mid) addupdate(l,r,add,lson);
     if(r>mid)  addupdate(l,r,add,rson);
     PushUP(rt);
 }
 ll query(ll l, ll r, ll left, ll right, ll rt)
 {
     ll res = ;
     if(l <= left&&r >= right) return ans[rt]%mod;
     ll mid = (left+right) >> ;
     if(mullazy[rt]!=||addlazy[rt]>=) PushDOWN(rt, mid, left, right);
     if(l <= mid) res = (res+query(l,r,lson))%mod;
     if(r > mid) res = (res+query(l,r,rson))%mod;
     return res%mod;
 }
 int main()
 {
     scanf("%d%d",&n,&mod);
     build(,n,);
     scanf("%d",&m);
     while(m--)
     {
         int p;
         scanf("%d",&p);
         if(p == )
         {
             scanf("%d%d%d",&x,&y,&k);
             mulupdate(x,y,k,,n,);
         }
         if(p == )
         {
             scanf("%d%d%d",&x,&y,&k);
             addupdate(x,y,k,,n,);
         }
         if(p == )
         {
             scanf("%d%d",&x,&y);
             printf("%d\n",query(x,y,,n,));
         }
     }
     return ;
 }