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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#315596#7901. Basic Substring StructurelmeowdnWA 8ms18860kbC++143.2kb2024-01-27 14:36:392024-01-27 14:36:40

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你现在查看的是最新测评结果

  • [2024-01-27 14:36:40]
  • 评测
  • 测评结果:WA
  • 用时:8ms
  • 内存:18860kb
  • [2024-01-27 14:36:39]
  • 提交

answer

//vanitas vanitatum et omnia vanitas
#include <bits/stdc++.h>
#define fi first
#define se second
#define eb emplace_back
#define mp make_pair
using namespace std;
typedef long double ld;
typedef long long ll;
typedef unsigned long long ull;
typedef __int128 i128;
template<typename T,typename U>
T ceil(T x, U y) {return (x>0?(x+y-1)/y:x/y);}
template<typename T,typename U>
T floor(T x, U y) {return (x>0?x/y:(x-y+1)/y);}
template<class T,class S>
bool chmax(T &a,const S b) {return (a<b?a=b,1:0);}
template<class T,class S>
bool chmin(T &a,const S b) {return (a>b?a=b,1:0);}
int popcnt(int x) {return __builtin_popcount(x);}
int popcnt(ll x)  {return __builtin_popcountll(x);}
int topbit(int x) {return (x==0?-1:31-__builtin_clz(x));}
int topbit(ll x)  {return (x==0?-1:63-__builtin_clzll(x));}
int lowbit(int x) {return (x==0?-1:__builtin_ctz(x));}
int lowbit(ll x)  {return (x==0?-1:__builtin_ctzll(x));}

#define int long long
#define rep(i,a,b) for(int i=(a);i<=(b);i++)
#define per(i,a,b) for(int i=(a);i>=(b);i--)
typedef pair<int,int> pii;
typedef vector<int> vi;
typedef vector<pii> vp;
typedef tuple<int,int,int> tiii;
int read() {
  int x=0,w=1; char c=getchar(); 
  while(!isdigit(c)) {if(c=='-') w=-1; c=getchar();}
  while(isdigit(c)) {x=x*10+(c-'0'); c=getchar();} 
  return x*w;
}

const int N=2e5+5,base=19260817,mod=1e9+7;
int n,a[N],b[N],h[N],d[N],ans;
map<int,int> f[N];

int hsh(int l,int r) {
  return (h[r]-h[l-1]*b[r-l+1]%mod+mod)%mod;
}
int lcp(int x,int y) {
  int k=0,l=1,r=n-y+1;
  while(l<=r) {
    int mid=l+r>>1;
    if(hsh(x,x+mid-1)==hsh(y,y+mid-1)) k=mid, l=mid+1;
    else r=mid-1;
  }
  return k;
}

void solve() {
  n=read(); rep(i,1,n) a[i]=read();
  b[0]=1; rep(i,1,n) b[i]=b[i-1]*base%mod;
  rep(i,1,n) h[i]=(h[i-1]*base+a[i])%mod;
  rep(i,0,n+1) d[i]=0, f[i].clear(); ans=0;
  rep(i,1,n) {
    //cout<<"WwwwwwwwwwwwwwwwwwwwwwwwwwwwwK "<<i<<endl;
    int k=lcp(1,i);
    int j=i+k-1; ans+=k;
    if(i!=1&&i<=j) {
      d[i]+=j-i+1, d[i+1]+=i-j-2, d[j+2]+=1;
      //cout<<"RED "<<i<<" "<<j<<" "<<j-i+1<<endl;;
    }
    if(j<n) {
      int p=lcp(k+2,j+2)+1; chmin(p,j-k);
      //cout<<"   "<<i<<" "<<j<<" "<<k<<" "<<p<<" "<<a[j+1]<<" "<<a[i+p]<<endl;
      if(p<j-k||a[k+1]!=a[i+k+p]) {
        //cout<<"         a  "<<j+1<<" "<<p<<" "<<a[k+1]<<" "<<a[i+p]<<endl;
        f[j+1][a[k+1]]+=p;
      } else {
        int q=lcp(j+2,i+k+p+1)+1;
        //cout<<"         b  "<<j+1<<" "<<p<<" "<<q<<endl;
        f[j+1][a[k+1]]+=p+q;
      }
    }
    int t=min(i-1,k);
    //cout<<i<<" "<<t<<" "<<k<<endl;
    if(t) {
      d[1]+=k, d[2]-=k+1, d[t+1]-=k-t, d[t+2]+=k-t+1;
      //cout<<"DER "<<1<<" "<<t<<" "<<k<<endl;
    }
    if(i>k+1&&j<n) {
      int p=lcp(k+2,j+2)+1;
      //cout<<"     "<<i<<" "<<j+1<<' '<<k+1<<" "<<a[j+1]<<" "<<p<<endl;
      f[k+1][a[j+1]]+=p;
    }
  }
  rep(i,1,n) d[i]+=d[i-1];
  rep(i,1,n) d[i]+=d[i-1]; int pans=0;
  rep(i,1,n) {
    int res=ans-d[i], ex=0;
    //cout<<d[i]<<endl;
    for(auto [x,y]:f[i]) chmax(ex,y);
    res+=ex; pans+=(res^i);
    //cout<<i<<" "<<res<<endl;
  }
  printf("%lld\n",pans);
}

signed main() {
  int T=read(); while(T--) solve();
  return 0;
}

Details

Tip: Click on the bar to expand more detailed information

Test #1:

score: 100
Accepted
time: 0ms
memory: 18456kb

input:

2
4
2 1 1 2
12
1 1 4 5 1 4 1 9 1 9 8 10

output:

15
217

result:

ok 2 lines

Test #2:

score: -100
Wrong Answer
time: 8ms
memory: 18860kb

input:

10000
8
2 1 2 1 1 1 2 2
9
2 2 1 2 1 2 1 2 1
15
2 1 2 1 1 1 1 2 2 1 2 1 2 2 1
2
1 1
10
2 1 1 1 2 2 1 1 2 2
3
2 1 2
11
1 2 2 1 1 2 1 2 2 1 1
14
2 1 1 1 1 2 1 1 1 2 2 1 2 1
12
2 2 2 1 2 2 2 1 1 2 1 2
4
2 1 1 2
8
1 2 2 2 1 2 1 1
8
1 1 2 1 2 1 1 1
6
2 1 1 1 2 2
14
2 2 1 1 1 1 2 2 2 1 2 2 1 1
10
1 2 2 1 1...

output:

94
128
347
3
211
9
265
363
278
15
95
114
58
348
225
3
335
364
377
316
3
19
122
65
15
83
36
261
10
64
28
90
85
104
252
191
21
48
303
63
102
20
24
68
316
362
266
309
354
281
326
281
231
312
3
330
54
328
8
69
32
147
322
39
338
89
242
3
165
346
245
20
155
3
404
393
392
81
269
360
20
54
21
279
3
17
351
3...

result:

wrong answer 24th lines differ - expected: '66', found: '65'