30分蒟蒻求助
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30分蒟蒻求助
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SpadeA261大愚若智楼主2020/7/26 17:44
#include<iostream>
#include<cstdio>
using namespace std;
struct Node
{
    int l,r;
    long long sum,add,mul;
}tree[1000005];
int n,m,q,a[100005];
void build(int p,int l,int r)
{
    tree[p].l=l;
    tree[p].r=r;
    if(l==r)
    {
        tree[p].sum=a[l]%q;
        tree[p].mul=1;
        return;
    }
    int mid=(l+r)/2;
    build(p*2,l,mid);
    build(p*2+1,mid+1,r);
    tree[p].sum=(tree[p*2].sum+tree[p*2+1].sum)%q;
    tree[p].mul=tree[p*2].mul*tree[p*2+1].mul;
}
void spread(int p)
{
    if(tree[p].add||tree[p].mul)
    {
        tree[p*2].sum+=tree[p].add*(tree[p*2].r-tree[p*2].l+1);
        tree[p*2+1].sum+=tree[p].add*(tree[p*2+1].r-tree[p*2+1].l+1);
        tree[p*2].sum*=tree[p].mul;
    	tree[p*2+1].sum*=tree[p].mul;
        tree[p*2].add+=tree[p].add;
        tree[p*2+1].add+=tree[p].add;
        tree[p*2].mul*=tree[p].mul;
        tree[p*2+1].mul*=tree[p].mul;
        tree[p].add=0;
        tree[p].mul=1;
    }
    return;
}
void change(int p,int l,int r,int opt,long long k)
{
	spread(p);
    if(l<=tree[p].l&&r>=tree[p].r)
    {
        if(opt==1)
		{
			tree[p].mul*=k;
			tree[p].sum=tree[p].sum*k%q;
		}
        else
		{
			tree[p].add+=k;
			tree[p].sum=(tree[p].sum+k*(tree[p].r-tree[p].l+1)%q)%q;
		}
        return;
    }
    int mid=(tree[p].l+tree[p].r)/2;
    if(l<=mid) change(p*2,l,r,opt,k);
    if(r>mid) change(p*2+1,l,r,opt,k);
    tree[p].sum=(tree[p*2].sum+tree[p*2+1].sum)%q;
    return;
}
long long ask(int p,int l,int r)
{
    if(l<=tree[p].l&&r>=tree[p].r) return tree[p].sum;
    spread(p);
    int mid=(tree[p].l+tree[p].r)/2;
    long long val=0;
    if(l<=mid) val=(val+ask(p*2,l,r))%q;
    if(r>mid) val=(val+ask(p*2+1,l,r))%q;
    return val;
}
int main()
{
    cin>>n>>m>>q;
    for(int i=1;i<=n;i++) cin>>a[i];
    build(1,1,n);
    while(m--)
    {
        int opt,x,y;
		long long k;
        cin>>opt>>x>>y;
        if(opt==1||opt==2)
        {
            cin>>k;
            change(1,x,y,opt,k%q);
        }
        else cout<<ask(1,x,y)%q<<endl;
    }
    return 0;
}

只有#1#3#4 AC

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2020/7/26 17:44
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