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#include<iostream>#define REP(i,n) for(int i=0;i<n;i++)#define Renew(x,c)x=max(x,c)using namespace std;typedef long long LL;const int maxn=60000,maxv=maxn*4,inf=~0U>>2;int A[maxn],n;struct Tree{ LL Max,Lmax,Rmax,Sum; Tree(){} Tree(int M,int L,int R,int S):Max(M),Lmax(L),Rmax(R),Sum(S){Lch=Rch=0;} Tree* Lch,*Rch; }*root;inline void Update(Tree*F,Tree*Lch,Tree*Rch){ F->Sum=Lch->Sum+Rch->Sum; F->Lmax=max(Lch->Lmax,Lch->Sum+Rch->Lmax); F->Rmax=max(Rch->Rmax,Rch->Sum+Lch->Rmax); F->Max=max(max(Lch->Max,Rch->Max),Lch->Rmax+Rch->Lmax);}Tree* build(int l,int r){ if(l==r) return new Tree(A[l],A[l],A[l],A[l]); Tree* now=new Tree; int mid=(l+r)\/2; now->Lch=build(l,mid);now->Rch=build(mid+1,r); Update(now,now->Lch,now->Rch); return now;}Tree* ask(Tree*T,int l,int r,int first,int last){ if(l==first&&r==last) return T; int mid=(l+r)\/2; if(first>mid) return ask(T->Rch,mid+1,r,first,last); if(last<=mid) return ask(T->Lch,l,mid,first,last); Tree* ans=new Tree; Update(ans,ask(T->Lch,l,mid,first,mid),ask(T->Rch,mid+1,r,mid+1,last)); return ans;}int main(){ cin>>n; REP(i,n) scanf("%d",A+i); root=build(0,n-1); int q,s,t;cin>>q; REP(i,q) { scanf("%d %d",&s,&t);s=max(s,1);t=min(t,n); printf<\/a>("%lldn",ask(root,0,n-1,s-1,t-1)->Max); } }4.1s…\u8fd9\u901f\u5ea6\u3002\u3002\u3002 <\/p>\n","protected":false},"excerpt":{"rendered":" \u7ebf\u6bb5\u6811\u7ec3\u4e60\u9898\u5566\u3002\u3002\u3002 \u90fd\u5f88\u6c34\u7684\u6837\u5b50\u3002\u3002\u4e0d\u8fc7\u7531\u4e8e\u6211\u76f4\u63a5\u5199\u6307\u9488\u4e86\u3002\u3002\u901f\u5ea6\u5b9e\u5728\u662f\u3002\u3002\u3002 1… #include<iostream>#define REP(i,n) for(int i=0;i<n;i++)#define Renew(x,c)x=max(x,c)using namespace std;typedef long long LL;const int maxn=60000,maxv=maxn*4,inf=~0U>>2;int A[maxn],n;struct Tree{ LL Max,Lmax,Rmax,Sum; Tree(){} Tree(int M,int L,int R,int S):Max(M),Lmax(L),Rmax(R),Sum(S){Lch=Rch=0;} Tree* Lch,*Rch; }*root;inline void Update(Tree*F,Tree*Lch,Tree*Rch){ F->Sum=Lch->Sum+Rch->Sum; F->Lmax=max(Lch->Lmax,Lch->Sum+Rch->Lmax); F->Rmax=max(Rch->Rmax,Rch->Sum+Lch->Rmax); F->Max=max(max(Lch->Max,Rch->Max),Lch->Rmax+Rch->Lmax);}Tree* build(int l,int r){ if(l==r) return new Tree(A[l],A[l],A[l],A[l]); Tree* now=new Tree; int mid=(l+r)\/2; now->Lch=build(l,mid);now->Rch=build(mid+1,r); Update(now,now->Lch,now->Rch); return now;}Tree* ask(Tree*T,int l,int r,int first,int last){ […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[10],"tags":[],"jetpack_featured_media_url":"","_links":{"self":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/35"}],"collection":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=35"}],"version-history":[{"count":0,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=\/wp\/v2\/posts\/35\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=35"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=35"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.shuizilong.com\/wjmzbmr\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=35"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}