Submission #1096082

#	Submission time	Handle	Problem	Language	Result	Execution time	Memory
1096082	2024-10-03T17:29:07 Z	andrewp	Martian DNA (BOI18_dna)	C++14	68 / 100	34 ms	18012 KB

dna

//Dedicated to my love, ivaziva
#pragma GCC optimize("Ofast") 
#include <bits/stdc++.h> 
using namespace std;   
 
using pii = pair<int, int>;
using ll = int64_t;  
  
#define all(x) x.begin(), x.end()
#define rall(x) x.rbegin(), x.rend()
#define pb push_back 
#define dbg(x) cerr<<#x<<": "<<x<<'\n';  
#define dbga(A,l_,r_){for(int i_=l_;i_<=r_;i_++)cerr<<A[i_]<<' ';cerr<<'\n';}
#define dbgv(a_){for(auto x_:a_) cerr<<x_<<' ';cerr<<'\n';}   
 
const int maxn = 2e5 + 3;
int n, k, r;
int a[maxn], b[maxn], q[maxn], ps[maxn][20]; 
 
bool check(int len) {  
    for (int i = len; i <= n; i++) {
        bool ok = true;
        for (int j = 1; j <= r; j++) {
            if (ps[i][j] - ps[i - len][j] < q[j]) { 
                ok = false;
            }
        }
        if (ok) {
            return true;
        }
    } 
    return false;
}
 
void reshi1() {
    for (int j = 1; j <= r; j++) {
        ps[0][j] = 0; 
    } 
    for (int i = 1; i <= n; i++) {
        for (int j = 1; j <= r; j++) { 
            ps[i][j] = ps[i - 1][j] + (a[i] == b[j]);
        }
    }
    int l = 1, r = n, ans = -1;
    while (l <= r) {
        int mid = (l + r) / 2;
        if (check(mid)) {
            r = mid - 1;
            ans = mid;
        } else {
            l = mid + 1;
        }
    }
    if (ans == -1) {
        cout << "impossible\n";
        return; 
    }
    cout << ans << '\n'; 
}

int32_t main()  {
    ios::sync_with_stdio(false); cin.tie(nullptr);  
    cout.tie(nullptr); cerr.tie(nullptr);
 
    cin >> n >> k >> r;
    for (int i = 1; i <= n; i++) {
        cin >> a[i];
    }
    for (int i = 1; i <= r; i++) { 
        cin >> b[i] >> q[i]; 
    }   
    if (r <= 450) {
        reshi1();
        return 0;
    }
    return 0;   
}

Subtask #1

16.0 / 16.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	0 ms	348 KB	Output is correct
2	Correct	0 ms	348 KB	Output is correct
3	Correct	0 ms	348 KB	Output is correct
4	Correct	1 ms	464 KB	Output is correct
5	Correct	1 ms	348 KB	Output is correct
6	Correct	1 ms	348 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	344 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct

Subtask #2

24.0 / 24.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	1 ms	604 KB	Output is correct
2	Correct	1 ms	604 KB	Output is correct
3	Correct	1 ms	732 KB	Output is correct
4	Correct	1 ms	604 KB	Output is correct
5	Correct	1 ms	604 KB	Output is correct
6	Correct	1 ms	720 KB	Output is correct
7	Correct	0 ms	348 KB	Output is correct
8	Correct	0 ms	348 KB	Output is correct
9	Correct	0 ms	348 KB	Output is correct
10	Correct	0 ms	348 KB	Output is correct
11	Correct	0 ms	348 KB	Output is correct
12	Correct	1 ms	424 KB	Output is correct
13	Correct	0 ms	348 KB	Output is correct
14	Correct	1 ms	348 KB	Output is correct
15	Correct	0 ms	348 KB	Output is correct

Subtask #3

28.0 / 28.0

#	Verdict	Execution time	Memory	Grader output
1	Correct	34 ms	17228 KB	Output is correct
2	Correct	23 ms	17240 KB	Output is correct
3	Correct	20 ms	17244 KB	Output is correct
4	Correct	24 ms	17244 KB	Output is correct
5	Correct	31 ms	18008 KB	Output is correct
6	Correct	22 ms	17420 KB	Output is correct
7	Correct	17 ms	17240 KB	Output is correct
8	Correct	33 ms	18012 KB	Output is correct
9	Correct	33 ms	17744 KB	Output is correct
10	Correct	29 ms	17240 KB	Output is correct
11	Correct	1 ms	600 KB	Output is correct
12	Correct	1 ms	604 KB	Output is correct
13	Correct	1 ms	604 KB	Output is correct
14	Correct	1 ms	604 KB	Output is correct
15	Correct	1 ms	604 KB	Output is correct
16	Correct	1 ms	604 KB	Output is correct
17	Correct	0 ms	348 KB	Output is correct
18	Correct	0 ms	344 KB	Output is correct
19	Correct	0 ms	344 KB	Output is correct
20	Correct	1 ms	348 KB	Output is correct
21	Correct	0 ms	348 KB	Output is correct
22	Correct	0 ms	460 KB	Output is correct
23	Correct	1 ms	348 KB	Output is correct
24	Correct	0 ms	348 KB	Output is correct
25	Correct	0 ms	348 KB	Output is correct

Subtask #4

0 / 32.0

#	Verdict	Execution time	Memory	Grader output
1	Incorrect	20 ms	3404 KB	Output isn't correct
2	Halted	0 ms	0 KB	-