Submission #607602

#TimeUsernameProblemLanguageResultExecution timeMemory
607602PietraLottery (CEOI18_lot)C++14
65 / 100
1992 ms65536 KiB
// seq ai com n numeros // a dist de 2 intervalos e a qtd de caras diferentes ai+x e ai+y // dois intervalos são k similares se a dist entre eles é no max k // p cada inicio diga qts intervalos ele tem tal q a dist eh menor que k // n pequeno acha a dist de cada um pros outros n^2 // k == 0 qts intervalos iguais? -> freq dos valores // p cada cara qual o igual a ele mais prox dele // consigo descobrir em o(n) qts caras sao iguais a mim? // dado um i e um l vc sabe dizer qual a pos ele vai estar num vetor j? #include<bits/stdc++.h> #define ll long long using namespace std ; const int prime = 37 ; const int mod = 1e9 + 7 ; const int maxn = 1e4 + 5 ; int n, l, v[maxn], dist[maxn][maxn], k, q ; ll pot[maxn], inv[maxn], pref[maxn], val[maxn] ; void solve(){ for(int i = 1 ; i <= n ; i++){ for(int j = 1 ; j <= n ; j++){ // dist de i p j if(i == j || i + l - 1 > n || j + l - 1 > n) continue ; int ctr = 0 ; for(int k = 0 ; k < l ; k++) if(v[i+k] != v[j+k]) ctr++ ; dist[i][j] = dist[j][i] = ctr ; } } } ll exp(ll a, ll b){ ll ans = 1 ; while(b){ if(b&1) ans = (ans*a)%mod ; a = (a*a)%mod ; b >>= 1 ; } return ans ; } void solve_hash(){ pot[0] = 1LL ; for(int i = 1 ; i < maxn ; i++) pot[i] = (pot[i-1]*prime)%mod ; inv[0] = 1LL ; inv[1] = exp(prime, mod-2) ; for(int i = 2 ; i < maxn ; i++) inv[i] = (inv[i-1]*inv[1])%mod ; for(int i = 1 ; i <= n ; i++) pref[i] = (pref[i-1] + (v[i]*pot[i]*1LL)%mod)%mod ; vector<ll> vals ; for(int i = 1 ; i + l - 1 <= n ; i++){ ll v1 = pref[i+l-1] ; if(i - 1 >= 1) v1 = (v1 - pref[i-1] + mod)%mod ; v1 = (v1*inv[i])%mod ; vals.push_back(v1) ; val[i] = v1 ; } sort(vals.begin(), vals.end()) ; for(int i = 1 ; i + l - 1 <= n ; i++){ int l = lower_bound(vals.begin(), vals.end(), val[i]) - vals.begin() ; int r = upper_bound(vals.begin(), vals.end(), val[i]) - vals.begin() ; cout << (r - l - 1) << " " ; } cout << "\n" ; } int main(){ ios_base::sync_with_stdio(false) ; cin.tie(NULL) ; cin >> n >> l ; for(int i = 1 ; i <= n ; i++) cin >> v[i] ; // for(int i = 1 ; i <= n ; i++){ // for(int j = 1 ; j <= n ; j++){ // cout << dist[i][j] <<" " ; // } // cout << "\n" ; // } cin >> q ; cin >> k ; if(q == 1 && !k){ solve_hash() ; exit(0) ; } solve() ; for(int i = 1 ; i + l - 1 <= n ; i++){ int ct = 0 ; for(int j = 1 ; j + l - 1 <= n ; j++) if(i != j && dist[i][j] <= k) ct++ ; cout << ct << " " ; } cout << "\n" ; for(int i = 1 ; i < q ; i++){ cin >> k ; for(int i = 1 ; i + l - 1 <= n ; i++){ int ct = 0 ; for(int j = 1 ; j + l - 1 <= n ; j++) if(i != j && dist[i][j] <= k) ct++ ; cout << ct << " " ; } cout << "\n" ; } }
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