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Submission #723691

# Submission time Handle Problem Language Result Execution time Memory
723691 2023-04-14T07:36:32 Z _martynas Martian DNA (BOI18_dna) C++11
100 / 100
 140 ms 5252 KB 
#include <bits/stdc++.h>

using namespace std;

#define F first
#define S second
#define PB push_back

using pii = pair<int, int>;
const int MXN = 2e5+5;

int n, k, r;
int A[MXN], req[MXN], tot[MXN], cnt[MXN];
int satisfied = 0;

int main() {
    cin >> n >> k >> r;
    for(int i = 0; i < n; i++) cin >> A[i];
    for(int i = 0; i < n; i++) tot[A[i]]++;
    for(int i = 0; i < r; i++) {
        int a, b; cin >> a >> b;
        req[a] = b;
        if(tot[a] < b) {
            cout << "impossible\n";
            return 0;
        }
    }
    auto add = [](int i) {
        cnt[A[i]]++;
        if(cnt[A[i]] == req[A[i]]) satisfied++;
    };
    auto del = [](int i) {
        if(cnt[A[i]] == req[A[i]]) satisfied--;
        cnt[A[i]]--;
    };
    auto ok = []() {
        return satisfied == r;
    };
    int lo = 1, hi = n;
    while(lo < hi) {
        int m = (lo+hi)/2;
        satisfied = 0;
        fill(cnt, cnt+k, 0);
        int i;
        for(i = 0; i < m; i++) add(i);
        bool f = false;
        if(ok()) f = true;
        for(; i < n; i++) {
            add(i), del(i-m);
            if(ok()) f = true;
        }
        if(f) {
            hi = m;
        }
        else {
            lo = m+1;
        }
    }
    cout << lo << "\n";
    return 0;
}

Subtask #1
16.0 / 16.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 212 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 212 KB Output is correct
4 Correct 1 ms 308 KB Output is correct
5 Correct 1 ms 212 KB Output is correct
6 Correct 1 ms 308 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct

Subtask #2
24.0 / 24.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 340 KB Output is correct
2 Correct 1 ms 340 KB Output is correct
3 Correct 2 ms 340 KB Output is correct
4 Correct 2 ms 324 KB Output is correct
5 Correct 2 ms 340 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 212 KB Output is correct
8 Correct 1 ms 212 KB Output is correct
9 Correct 1 ms 212 KB Output is correct
10 Correct 1 ms 212 KB Output is correct
11 Correct 1 ms 212 KB Output is correct
12 Correct 0 ms 304 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 1 ms 308 KB Output is correct
15 Correct 1 ms 212 KB Output is correct

Subtask #3
28.0 / 28.0

# Verdict Execution time Memory Grader output
1 Correct 41 ms 1468 KB Output is correct
2 Correct 49 ms 1468 KB Output is correct
3 Correct 53 ms 1508 KB Output is correct
4 Correct 49 ms 1492 KB Output is correct
5 Correct 72 ms 2856 KB Output is correct
6 Correct 44 ms 1468 KB Output is correct
7 Correct 33 ms 1536 KB Output is correct
8 Correct 82 ms 3840 KB Output is correct
9 Correct 71 ms 2120 KB Output is correct
10 Correct 46 ms 1468 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 340 KB Output is correct
13 Correct 2 ms 340 KB Output is correct
14 Correct 2 ms 328 KB Output is correct
15 Correct 2 ms 320 KB Output is correct
16 Correct 2 ms 340 KB Output is correct
17 Correct 1 ms 212 KB Output is correct
18 Correct 1 ms 212 KB Output is correct
19 Correct 0 ms 308 KB Output is correct
20 Correct 1 ms 304 KB Output is correct
21 Correct 1 ms 212 KB Output is correct
22 Correct 1 ms 212 KB Output is correct
23 Correct 1 ms 212 KB Output is correct
24 Correct 1 ms 212 KB Output is correct
25 Correct 1 ms 212 KB Output is correct

Subtask #4
32.0 / 32.0

# Verdict Execution time Memory Grader output
1 Correct 100 ms 3684 KB Output is correct
2 Correct 100 ms 3368 KB Output is correct
3 Correct 94 ms 3076 KB Output is correct
4 Correct 49 ms 1472 KB Output is correct
5 Correct 54 ms 2804 KB Output is correct
6 Correct 140 ms 5252 KB Output is correct
7 Correct 68 ms 2096 KB Output is correct
8 Correct 78 ms 2492 KB Output is correct
9 Correct 45 ms 1416 KB Output is correct
10 Correct 50 ms 1472 KB Output is correct
11 Correct 49 ms 1508 KB Output is correct
12 Correct 53 ms 1388 KB Output is correct
13 Correct 75 ms 2844 KB Output is correct
14 Correct 37 ms 1464 KB Output is correct
15 Correct 31 ms 1644 KB Output is correct
16 Correct 84 ms 3932 KB Output is correct
17 Correct 66 ms 1996 KB Output is correct
18 Correct 51 ms 1484 KB Output is correct
19 Correct 2 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 2 ms 340 KB Output is correct
22 Correct 2 ms 340 KB Output is correct
23 Correct 2 ms 324 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 0 ms 212 KB Output is correct
26 Correct 1 ms 212 KB Output is correct
27 Correct 1 ms 212 KB Output is correct
28 Correct 1 ms 212 KB Output is correct
29 Correct 1 ms 212 KB Output is correct
30 Correct 1 ms 212 KB Output is correct
31 Correct 1 ms 212 KB Output is correct
32 Correct 0 ms 212 KB Output is correct
33 Correct 1 ms 212 KB Output is correct