QOJ.ac
QOJ
ID | 题目 | 提交者 | 结果 | 用时 | 内存 | 语言 | 文件大小 | 提交时间 | 测评时间 |
---|---|---|---|---|---|---|---|---|---|
#423722 | #2070. Heavy Stones | IIIIIlIIIl | WA | 6ms | 44948kb | C++14 | 3.7kb | 2024-05-28 15:40:15 | 2024-05-28 15:40:18 |
Judging History
answer
#include<bits/stdc++.h>
#define ll long long
const int maxn=1e6+5;
int n,a[maxn],rt,x,y,z,pl,pr;
ll sum;
struct node{
ll val,sum;int l,r,siz;
node(ll _val=0,ll _sum=0,int _l=0,int _r=0):val(_val),sum(_sum),l(_l),r(_r),siz(_r-_l+1){}
};
std::vector<node>st;
std::vector<std::pair<node,int>>pre,suf;
std::mt19937 rnd(time(0));
node operator +(const node &x,const node &y){return node(x.val+y.val+x.sum*y.siz,x.sum+y.sum,std::min(x.l,y.l),std::max(x.r,y.r));}
bool operator <(const node &x,const node &y){return x.sum*y.siz==y.sum*x.siz?x.l<y.l:x.sum*y.siz<y.sum*x.siz;}
bool operator ==(const node &x,const node &y){return x.val==y.val&&x.sum==y.sum&&x.l==y.l&&x.r==y.r;}
bool operator <=(const node &x,const node &y){return x<y||x==y;}
struct fhq{
int ls[maxn],rs[maxn],len[maxn],siz[maxn],key[maxn],cnt;
ll ans[maxn],sum[maxn];
node val[maxn];
int newnode(node v){
val[++cnt]=v;key[cnt]=rnd();siz[cnt]=1;sum[cnt]=v.sum;len[cnt]=v.siz;ans[cnt]=v.val;
return cnt;
}
void push_up(int now){
siz[now]=siz[ls[now]]+siz[rs[now]]+1;
len[now]=len[ls[now]]+len[rs[now]]+val[now].siz;
sum[now]=sum[ls[now]]+sum[rs[now]]+val[now].sum;
ans[now]=ans[ls[now]]+ans[rs[now]]+val[now].val+(val[now].siz+len[rs[now]])*sum[ls[now]]+val[now].sum*len[rs[now]];
}
void split(int now,node k,int &x,int &y){
if(!now)x=y=0;
else{
if(val[now]<=k){
x=now;
split(rs[x],k,rs[x],y);
}else{
y=now;
split(ls[y],k,x,ls[y]);
}
push_up(now);
}
}
void splitsiz(int now,int k,int &x,int &y){
if(!now)x=y=0;
else{
if(siz[ls[now]]<k){
x=now;
splitsiz(rs[x],k-siz[ls[now]]-1,rs[x],y);
}else{
y=now;
splitsiz(ls[y],k,x,ls[y]);
}
push_up(now);
}
}
int merge(int x,int y){
if(!x||!y)return x+y;
if(key[y]>key[y]){
rs[x]=merge(rs[x],y);
push_up(x);
return x;
}else{
ls[y]=merge(x,ls[y]);
push_up(y);
return y;
}
}
void insert(int v){
x=y=0;
split(rt,val[v],x,y);
rt=merge(merge(x,v),y);
}
void del(node v){
x=y=z=0;
split(rt,v,x,z);splitsiz(x,siz[x]-1,x,y);rt=merge(x,z);
}
}T;
signed main(){
scanf("%d",&n);
for(int i=1;i<=n;i++)scanf("%d",&a[i]);
for(int i=1;i<=n;i++)sum=sum+a[i];
for(int i=1;i<=n;i++){
node now(a[i],a[i],i,i);
while(!st.empty()&&st.back()<=now){
node tmp=st.back();st.pop_back();
pre.push_back({tmp,-1});now=now+tmp;
}
st.push_back(now);pre.push_back({now,1});
}st.clear();
for(int i=n;i>=1;i--){
node now(a[i],a[i],i,i);
while(!st.empty()&&st.back()<=now){
node tmp=st.back();st.pop_back();
suf.push_back({tmp,-1});now=now+tmp;
}
st.push_back(now);suf.push_back({now,1});
}
for(auto i:st)T.insert(T.newnode(i));
pl=-1,pr=(int)suf.size()-1;
for(int i=1;i<=n;i++){
while(pr>=0&&(suf[pr].first.l!=i+1||suf[pr].second==-1)){
if(suf[pr].second==1)T.del(suf[pr].first);
else T.insert(T.newnode(suf[pr].first));
pr--;
}
printf("%lld ",T.ans[rt]+1ll*a[i]*n-sum);
while(pl==-1||pre[pl].first.r!=i){
pl++;
if(pre[pl].second==1)T.insert(T.newnode(pre[pl].first));
else T.del(pre[pl].first);
}
}
return 0;
}
详细
Test #1:
score: 0
Wrong Answer
time: 6ms
memory: 44948kb
input:
5 2 1 3 5 4
output:
22 21 24 33 38
result:
wrong answer 1st lines differ - expected: '35 35 36 43 49', found: '22 21 24 33 38 '