QOJ.ac
QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#639041 | #7036. Can You Solve the Harder Problem? | Mu_Silk | WA | 528ms | 20128kb | C++20 | 2.9kb | 2024-10-13 17:44:45 | 2024-10-13 17:44:45 |
Judging History
answer
#include <bits/stdc++.h>
using namespace std;
typedef long long ll;
const int N=2e5+5;
int n,m;
ll a[N],s[N];
vector<int> sa,rk;
vector<int> h;//h[i]=lcp(sa[i],sa[i-1]);
//s下标从1开始
void init(){
vector<int> cnt(max(n+1,m+1)),oldrk(2*n+1),id(n+1),key(n+1);
sa.resize(n+1);rk.resize(n+1);
for(int i=0;i<=n;i++) sa[i]=rk[i]=0;
auto cmp=[&](int x,int y,int w){
return oldrk[x]==oldrk[y]&&oldrk[x+w]==oldrk[y+w];
};
for(int i=1;i<=n;i++)++cnt[rk[i]=s[i]];
for(int i=1;i<=m;i++)cnt[i]+=cnt[i-1];
for(int i=n;i>=1;i--)sa[cnt[rk[i]]--]=i;
for(ll w=1;;w<<=1){
int p=0;
for(int i=n;i>n-w;i--)id[++p]=i;
for(int i=1;i<=n;i++)if(sa[i]>w)id[++p]=sa[i]-w;
fill(cnt.begin(),cnt.end(),0);
for(int i=1;i<=n;i++)++cnt[key[i]=rk[id[i]]];
for(int i=1;i<=m;i++)cnt[i]+=cnt[i-1];
for(int i=n;i>=1;i--)sa[cnt[key[i]]--]=id[i];
copy(rk.begin()+1,rk.end(),oldrk.begin()+1);
p=0;
for(int i=1;i<=n;i++)rk[sa[i]]=cmp(sa[i],sa[i-1],w)?p:++p;
if(p==n)break;
m=p;
}
for(int i=1,k=0;i<=n;i++){
if(rk[i]==0)continue;
if(k)--k;
while(s[i+k]==s[sa[rk[i]-1]+k])++k;
h[rk[i]]=k;
}
}
array<ll,3> sta[N];
int top;
ll sum[N];
ll ans;
void solve(){
cin>>n;
m=0;
h.resize(n+1);
for(int i=0;i<=n;i++) h[i]=0;
vector<int> tmp;
m=0;
for(int i=1;i<=n;i++){
cin>>s[i];
tmp.push_back(s[i]);
a[i]=s[i];
}
ans=top=0;
sort(tmp.begin(),tmp.end());
tmp.erase(unique(tmp.begin(),tmp.end()),tmp.end());
for(int i=1;i<=n;i++){
s[i]=lower_bound(tmp.begin(),tmp.end(),s[i])-tmp.begin()+1;
}
m=tmp.size()+1;
init();
for(int i=n;i>=1;i--){
while(top&&a[i]>sta[top][0]){
top--;
}
ll val=n-i+1;
if(top) val=sta[top][1]-1-i+1;
array<ll,3> arr;
arr[0]=a[i],arr[1]=i,arr[2]=val;
sta[++top]=arr;
sum[top]=sum[top-1]+1ll*a[i]*val;
int len=h[rk[i]];
int l=1,r=top,mid,pos=-1;
while(l<=r){
mid=(l+r)>>1;
if(sta[mid][1]-i+1>len){
pos=mid;
l=mid+1;
}else r=mid-1;
}
// cout<<"! "<<len<<"\n";
if(pos==-1){
continue;
}
// cout<<"# "<<i<<" "<<pos<<" "<<len<<"\n";
// for(int i=1;i<=top;i++) cout<<"@ "<<i<<" "<<sta[i][0]<<" "<<sta[i][1]<<" "<<sta[i][2]<<"\n";
ans+=sum[pos];
ans+=1ll*sta[pos+1][0]*(1ll*(sta[pos][1]-1-i+1)-len);
// cout<<ans<<"\n";
}
cout<<ans<<"\n";
}
int main(){
ios::sync_with_stdio(0);
cin.tie(0);cout.tie(0);
int n=1;
cin>>n;
while(n--)solve();
return 0;
}
Details
Tip: Click on the bar to expand more detailed information
Test #1:
score: 100
Accepted
time: 1ms
memory: 7676kb
input:
2 3 1 2 3 3 2 3 3
output:
14 14
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 528ms
memory: 20128kb
input:
1000 407 205460 200518 200561 199235 198814 198136 198802 206763 198795 200705 205862 209366 204017 209481 206300 198499 197364 200897 208928 196983 205605 206396 205140 201050 199886 207314 196947 207905 204999 203288 200298 198594 198286 197714 206506 203962 197628 201127 206380 199090 200711 2063...
output:
17377263880 484412003855 1469039857 473739194467 490710525192 305434410403 488104274858 494441224927 484186540302 482405408577 34438338505 225764586244 494264588201 492872979578 486605278982 482909421568 341192630235 492682676945 491228216090 9765154255 491451645772 120812820486 487318951455 4725116...
result:
wrong answer 2nd lines differ - expected: '484769420621', found: '484412003855'