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Submission #775320

# Submission time Handle Problem Language Result Execution time Memory
775320 2023-07-06T09:39:17 Z kirakaminski968 JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 18 ms 5188 KB 
#include <bits/stdc++.h>
using namespace std;
const int MAXN = 2e5+5;
int pref[3][MAXN],dp[3][MAXN];
int main(){
    int N,K; cin >> N >> K;
    for(int i = 1;i<=N;++i){
        char c; cin >> c;
        if(c == 'J') pref[0][i]++;
        else if(c == 'O') pref[1][i]++;
        else pref[2][i]++;
        pref[0][i] += pref[0][i-1];
        pref[1][i] += pref[1][i-1];
        pref[2][i] += pref[2][i-1];
    }
    memset(dp[0],0x3f,sizeof(dp[0]));
    int cur = 1e9, pos = 0;
    for(int i = 1;i<=N;++i){
        while(pref[0][i]-pref[0][pos] >= K && pos < i){
            cur = min(cur,-pos);
            pos++;
        }
        dp[0][i] = cur+i;
    }
    memset(dp[1],0x3f,sizeof(dp[1]));
    cur = 1e9; pos = 0;
    for(int i = 1;i<=N;++i){
        while(pref[1][i]-pref[1][pos] >= K && pos < i){
            cur = min(cur,dp[0][pos]-pos);
            pos++;
        }
        dp[1][i] = cur+i;
    }
    memset(dp[2],0x3f,sizeof(dp[2]));
    cur = 1e9; pos = 0;
    for(int i = 1;i<=N;++i){
        while(pref[2][i]-pref[2][pos] >= K && pos < i){
            cur = min(cur,dp[1][pos]-pos);
            pos++;
        }
        dp[2][i] = cur+i;
    }
    int ans = *min_element(dp[2],dp[2]+N+1) - 3*K;
    if(ans > 1e7) cout << -1 << "\n";
    else cout << ans << "\n";
    return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2608 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2608 KB Output is correct
8 Correct 1 ms 2612 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 1 ms 2584 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2608 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2608 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2608 KB Output is correct
8 Correct 1 ms 2612 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 1 ms 2584 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2608 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2612 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2612 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 1 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 1 ms 2644 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 2644 KB Output is correct
2 Correct 1 ms 2608 KB Output is correct
3 Correct 1 ms 2644 KB Output is correct
4 Correct 1 ms 2644 KB Output is correct
5 Correct 1 ms 2644 KB Output is correct
6 Correct 1 ms 2644 KB Output is correct
7 Correct 1 ms 2608 KB Output is correct
8 Correct 1 ms 2612 KB Output is correct
9 Correct 2 ms 2644 KB Output is correct
10 Correct 1 ms 2644 KB Output is correct
11 Correct 1 ms 2644 KB Output is correct
12 Correct 1 ms 2584 KB Output is correct
13 Correct 1 ms 2644 KB Output is correct
14 Correct 1 ms 2608 KB Output is correct
15 Correct 1 ms 2644 KB Output is correct
16 Correct 2 ms 2644 KB Output is correct
17 Correct 1 ms 2644 KB Output is correct
18 Correct 1 ms 2612 KB Output is correct
19 Correct 1 ms 2644 KB Output is correct
20 Correct 1 ms 2644 KB Output is correct
21 Correct 1 ms 2644 KB Output is correct
22 Correct 1 ms 2644 KB Output is correct
23 Correct 1 ms 2644 KB Output is correct
24 Correct 1 ms 2612 KB Output is correct
25 Correct 1 ms 2644 KB Output is correct
26 Correct 1 ms 2648 KB Output is correct
27 Correct 1 ms 2644 KB Output is correct
28 Correct 2 ms 2644 KB Output is correct
29 Correct 1 ms 2644 KB Output is correct
30 Correct 1 ms 2644 KB Output is correct
31 Correct 1 ms 2644 KB Output is correct
32 Correct 1 ms 2644 KB Output is correct
33 Correct 1 ms 2644 KB Output is correct
34 Correct 1 ms 2644 KB Output is correct
35 Correct 1 ms 2644 KB Output is correct
36 Correct 14 ms 5032 KB Output is correct
37 Correct 15 ms 5076 KB Output is correct
38 Correct 16 ms 5152 KB Output is correct
39 Correct 16 ms 5076 KB Output is correct
40 Correct 15 ms 5076 KB Output is correct
41 Correct 16 ms 5076 KB Output is correct
42 Correct 17 ms 5176 KB Output is correct
43 Correct 11 ms 4148 KB Output is correct
44 Correct 13 ms 4616 KB Output is correct
45 Correct 18 ms 5112 KB Output is correct
46 Correct 14 ms 5188 KB Output is correct
47 Correct 17 ms 5100 KB Output is correct
48 Correct 15 ms 5076 KB Output is correct
49 Correct 12 ms 4336 KB Output is correct
50 Correct 15 ms 5164 KB Output is correct
51 Correct 15 ms 5148 KB Output is correct
52 Correct 12 ms 5084 KB Output is correct
53 Correct 12 ms 5112 KB Output is correct
54 Correct 10 ms 5148 KB Output is correct
55 Correct 10 ms 5076 KB Output is correct
56 Correct 11 ms 5076 KB Output is correct