Submission #1291455

#	Time	Username	Problem	Language	Result	Execution time	Memory
1291455		Icelast	Lottery (CEOI18_lot)	C++20	100 / 100	883 ms	8612 KiB

lot

#include <iostream>
#include <bits/stdc++.h>
#define ll long long
using namespace std;
const ll maxn = 2*1e5+5, INF = 4e18+9;
void solve(){
    int n, L;
    cin >> n >> L;
    vector<int> a(n*2+1, -1);
    for(int i = 1; i <= n; i++){
        cin >> a[i+n];
    }
    int Q;
    cin >> Q;
    vector<int> q(Q+1);
    for(int i = 1; i <= Q; i++){
        cin >> q[i];
    }
    vector<int> f(n*2+1, 0);
    vector<int> pf(n+1, 0);
    vector<vector<int>> ans(Q+1, vector<int>(n+1, 0));
    for(int s = 1; s <= n-L+1; s++){
        if(s == 1){
            for(int i = 1; i <= n*2-L+1; i++){
                for(int j = 1; j <= L; j++){
                    if(a[j+n] == a[i+j-1]){
                        f[i]++;
                    }
                }
            }
        }else{
            for(int i = 1; i <= n; i++){
                if(a[i+n] == a[s-1+n]){
                    f[i+n]--;
                }
            }
            for(int i = 2*n; i >= 1; i--){
                f[i] = f[i-1];
            }
            for(int i = 1; i <= n; i++){
                if(a[s+L-1 + n] == a[i+n]){
                    f[i-L+1 + n]++;
                }
            }
        }
        for(int i = 0; i <= n; i++){
            pf[i] = 0;
        }
        for(int i = 1; i <= n-L+1; i++){
            int g = L - f[i+n];
            pf[g]++;
        }
        for(int i = 1; i <= n; i++){
            pf[i] += pf[i-1];
        }
        for(int i = 1; i <= Q; i++){
            ans[i][s] = pf[q[i]]-1;
        }
    }
    for(int i = 1; i <= Q; i++){
        for(int j = 1; j <= n-L+1; j++){
            cout << ans[i][j] << " ";
        }
        cout << "\n";
    }
}
int main(){
    ios_base::sync_with_stdio(false);
    cin.tie(NULL);
    solve();
}

• Subtask 1: 25 / 25
• Subtask 2: 20 / 20
• Subtask 3: 20 / 20
• Subtask 4: 15 / 15
• Subtask 5: 20 / 20