oj.uz

Submission #1108785

# Submission time Handle Problem Language Result Execution time Memory
1108785 2024-11-05T05:08:49 Z Roumak77 JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 27 ms 5764 KB 
#pragma GCC optimize ("O3")
#pragma GCC optimize ("unroll-loops")
#pragma GCC optimize("-Ofast")
#include <bits/stdc++.h>
#include <algorithm>
#include <iostream>
#include <vector>
#include <limits>
#include <cmath>
#include <stack>
#include <queue>
#include <map>
#include <math.h>
using namespace std;

using ll = long long;

void solve(){
    ll n, k;
    string s;

    cin >> n >> k;
    cin >> s;

    // Use while loop and do dp

    vector<ll> Os(n + 1, 0);
    vector<ll> Js(n + 1, 0);
    vector<ll> Is(n + 1, 0);

    for(ll i = 0; i < n; i++){
        Os[i + 1] = Os[i];
        Js[i + 1] = Js[i];
        Is[i + 1] = Is[i];
        if(s[i] == 'O'){
            Os[i + 1]++;
        }else if(s[i] == 'J'){
            Js[i + 1]++;
        }else{
            Is[i + 1]++;
        }
    }



    ll Curr_min = 1E9;

    for(ll i = 0; i < n; i++){
        ll temp = 0;
        if(Js[i + 1] < k){
            continue;
        }

        ll l = 0;
        ll r = i + 1;

        while(l + 1 < r){
            ll mid = (l + r)/2;

            if(Js[i + 1] - Js[mid] >= k){
                l = mid;
            }else{
                r = mid;
            }

        }
        temp += i - l + 1 - k;
        //cout << temp << endl;
        ll new_start = -1;
        l = i;
        r = n;
        while(l + 1 < r){
            ll mid = (l + r)/2;

            if(Os[mid] - Os[i] >= k){
                r = mid;
            }else{
                l = mid;
            }

        }

        temp += r - i - 1 - k;
        //cout << temp << endl;
        new_start = r;
        if(Is[n] - Is[new_start] < k){
            continue;
        }

        l = new_start;
        r = n;
        while(l + 1 < r){
            ll mid = (l + r)/2;

            if(Is[mid] - Is[new_start] < k){
                l = mid;
            }else{
               r = mid;
            }

        }

        temp += r - new_start - k;
        //cout << temp << endl;
        Curr_min = min(Curr_min, max(temp, 0LL));

    }
    if(Curr_min == 1E9){
        cout << -1;
    }else{
        cout << Curr_min;

    }





}



int main(){

    ios_base::sync_with_stdio(false);
    cout.tie(0);
    cin.tie(0);

    ll t = 1;

    while(t--){
        solve();
    }
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 500 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 500 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 2 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 2 ms 548 KB Output is correct
35 Correct 1 ms 508 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 336 KB Output is correct
2 Correct 1 ms 336 KB Output is correct
3 Correct 1 ms 500 KB Output is correct
4 Correct 1 ms 336 KB Output is correct
5 Correct 1 ms 336 KB Output is correct
6 Correct 1 ms 456 KB Output is correct
7 Correct 1 ms 336 KB Output is correct
8 Correct 1 ms 336 KB Output is correct
9 Correct 1 ms 336 KB Output is correct
10 Correct 1 ms 336 KB Output is correct
11 Correct 1 ms 336 KB Output is correct
12 Correct 1 ms 336 KB Output is correct
13 Correct 1 ms 336 KB Output is correct
14 Correct 1 ms 460 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 348 KB Output is correct
17 Correct 1 ms 336 KB Output is correct
18 Correct 1 ms 336 KB Output is correct
19 Correct 1 ms 336 KB Output is correct
20 Correct 2 ms 336 KB Output is correct
21 Correct 1 ms 336 KB Output is correct
22 Correct 1 ms 336 KB Output is correct
23 Correct 1 ms 336 KB Output is correct
24 Correct 1 ms 464 KB Output is correct
25 Correct 1 ms 336 KB Output is correct
26 Correct 2 ms 336 KB Output is correct
27 Correct 1 ms 336 KB Output is correct
28 Correct 1 ms 336 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 336 KB Output is correct
31 Correct 1 ms 336 KB Output is correct
32 Correct 1 ms 336 KB Output is correct
33 Correct 1 ms 336 KB Output is correct
34 Correct 2 ms 548 KB Output is correct
35 Correct 1 ms 508 KB Output is correct
36 Correct 17 ms 5084 KB Output is correct
37 Correct 19 ms 5672 KB Output is correct
38 Correct 19 ms 5596 KB Output is correct
39 Correct 27 ms 5596 KB Output is correct
40 Correct 17 ms 5596 KB Output is correct
41 Correct 22 ms 5580 KB Output is correct
42 Correct 25 ms 5596 KB Output is correct
43 Correct 10 ms 3664 KB Output is correct
44 Correct 12 ms 4316 KB Output is correct
45 Correct 21 ms 5604 KB Output is correct
46 Correct 14 ms 5596 KB Output is correct
47 Correct 15 ms 5596 KB Output is correct
48 Correct 15 ms 5596 KB Output is correct
49 Correct 10 ms 3804 KB Output is correct
50 Correct 16 ms 5764 KB Output is correct
51 Correct 14 ms 5600 KB Output is correct
52 Correct 7 ms 5364 KB Output is correct
53 Correct 8 ms 5596 KB Output is correct
54 Correct 19 ms 5596 KB Output is correct
55 Correct 15 ms 5596 KB Output is correct
56 Correct 13 ms 5596 KB Output is correct