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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#638896 | #7036. Can You Solve the Harder Problem? | Mu_Silk | WA | 707ms | 43160kb | C++20 | 3.1kb | 2024-10-13 17:14:53 | 2024-10-13 17:14:54 |
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;
}
minn.resize(n+1);
int t=log2(n)+2;
for(int i=1;i<=n;i++){
minn[i].resize(t);
minn[i][0]=h[i];
// cout<<h[i]<<" ";
}
// cout<<"\n";
for(int i=1;(1<<i)<=n;i++){
for(int j=1;j+(1<<i)-1<=n;j++){
minn[j][i]=min(minn[j][i-1],minn[j+(1<<(i-1))][i-1]);
}
}
}
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--;
}
int 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[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;
}
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+=sta[pos+1][2]*1ll*(len-sta[pos+1][1]+1);
// 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: 5680kb
input:
2 3 1 2 3 3 2 3 3
output:
14 14
result:
ok 2 lines
Test #2:
score: -100
Wrong Answer
time: 707ms
memory: 43160kb
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:
16364711392 474741104203 1244890320 459126830436 475541032445 297461289710 475090230283 481540176535 471862036704 472705772884 32304113934 220311402163 480226877753 486357903713 474145208983 472908825099 331028061432 476264222516 482090039227 9309423176 481627097418 116584158402 474885975544 4553030...
result:
wrong answer 1st lines differ - expected: '17377263880', found: '16364711392'