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IDProblemSubmitterResultTimeMemoryLanguageFile sizeSubmit timeJudge time
#315583#7901. Basic Substring StructurelmeowdnWA 14ms13440kbC++143.1kb2024-01-27 14:26:072024-01-27 14:26:08

Judging History

你现在查看的是最新测评结果

  • [2024-01-27 14:26:08]
  • 评测
  • 测评结果:WA
  • 用时:14ms
  • 内存:13440kb
  • [2024-01-27 14:26:07]
  • 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+p]) {
        f[j+1][a[k+1]]+=p;
      } else {
        int q=lcp(j+2,i+p+1)+1;
        //cout<<"            "<<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<<" "<<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: 2ms
memory: 13440kb

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: 14ms
memory: 13088kb

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:

91
129
347
3
211
9
252
363
277
15
95
107
58
348
225
3
335
352
388
303
3
19
121
66
15
83
36
261
11
64
28
90
87
101
252
186
21
48
322
63
102
20
24
61
319
363
266
315
347
281
324
282
230
310
3
331
54
328
8
76
32
148
320
39
338
89
242
3
166
346
245
20
155
3
405
393
392
81
271
361
20
54
21
279
3
17
351
3...

result:

wrong answer 1st lines differ - expected: '94', found: '91'