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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#638956 | #7036. Can You Solve the Harder Problem? | Mu_Silk | WA | 479ms | 19992kb | C++20 | 2.8kb | 2024-10-13 17:25:35 | 2024-10-13 17:25:36 |
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<vector<int>> minn;
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);
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=1;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;
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]-i;
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]*((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: 0ms
memory: 3628kb
input:
2 3 1 2 3 3 2 3 3
output:
14 14
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 479ms
memory: 19992kb
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:
17081429779 482362024469 1375975655 467738987073 486078580377 302792531347 486055849280 491925926803 482299599588 480825339814 33800635468 222998641812 491094280748 492014602141 484945033669 481114510804 339362372642 486599263361 489995106393 9613271228 489566954621 119593372232 484987290742 4701300...
result:
wrong answer 1st lines differ - expected: '17377263880', found: '17081429779'