oj.uz

Submission #757555

# Submission time Handle Problem Language Result Execution time Memory
757555 2023-06-13T10:29:04 Z vjudge1 JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 16 ms 5588 KB 
//
//  main.cpp
//  HAZ
//
//  Created by Nurbek Nurbagi
// 
  
// #pragma GCC optimize("O3,unroll-loops")
// #pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
#include <bits/stdc++.h>
 
#define pb push_back
#define ppb pop_back
#define ff first
#define ss second
#define all(x) (x).begin(), (x).end()
#define rall(x) (x).rbegin(), (x).rend()
 
typedef long double ld;
typedef long long ll;
  
using namespace std;
  
int gcd (int a, int b) {
	while (b) {
		a %= b;
		swap (a, b);
	}
	return a;
}
  
const ll N = 2e5 + 7;
const ll mod = 1e9 + 7;
const ll inf = 1e18;
const ld pi = 3.141592653589793;
const ld eps = 1e-12;
const ll zero = 0;
const int A = 1e9 + 5;
  
const int dx[4] = {0, -1, 0, 0};
const int dy[4] = {1, 0, -1, 1};

vector <ll> j(N), o(N), i(N);

void solve() {
    int n, k;
    cin >> n >> k;
    string s;
    cin >> s;
    if (n == 3) {
        if (k == 1 and s == "JOI") cout << 0;
        else cout << -1;
        return;
    }
    j[0] = (s[1] == 'J');
    o[0] = (s[1] == 'O');
    i[0] = (s[1] == 'I');
    for (int q = 1; q < n; q++) {
        j[q] = j[q - 1] + (s[q] == 'J');
        o[q] = o[q - 1] + (s[q] == 'O');
        i[q] = i[q - 1] + (s[q] == 'I');
    }
    ll mx = 1e18;
    for(int q = 0; q < n; q++){
        if (s[q] != 'J') continue;
        int l = q;
        int r = n;
        int x = j[q] + k - 1;
        int cnt = 0;
        while (l <= r) {
            int mid = (l + r) / 2;
            if (j[mid] >= x) {
                r = mid - 1;
                cnt = mid;
            }
            else l = mid + 1;
        }
        if (cnt == 0) continue;
        l = cnt + 1;
        r = n;
        x = o[l - 1] + k;
        cnt = 0;
        while(l <= r){
            int mid = (l + r) / 2;
            if (o[mid] >= x) {
                r = mid - 1;
                cnt = mid;
            } 
            else l = mid + 1;
        }
        if (cnt == 0) continue;
        l = cnt + 1;
        r = n;
        x = i[l - 1] + k;
        cnt = 0;
        while(l <= r){
            int mid = (l + r) / 2;
            if (i[mid] >= x) {
                r = mid - 1;
                cnt = mid;
            }
            else l = mid + 1;
        }
        if (cnt == 0) continue;
        mx = min(mx, (ll)cnt - q + 1 - 3 * k);
    }
    if (mx == 1e18) {
        cout << -1;
        return;
    }
    cout << mx;
}

 
signed main() {
    ios::sync_with_stdio(false);
    cin.tie(0);
    cout.tie(0);
    // freopen("herding.in","r",stdin);
    // freopen("herding.out","w",stdout);
    int t = 1;
    // cin >> t;
    for (int i = 1; i <= t; i++) solve();
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 5040 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4948 KB Output is correct
31 Correct 3 ms 4968 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 5040 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 2 ms 4948 KB Output is correct
2 Correct 3 ms 4948 KB Output is correct
3 Correct 2 ms 4948 KB Output is correct
4 Correct 3 ms 4948 KB Output is correct
5 Correct 2 ms 4948 KB Output is correct
6 Correct 3 ms 4948 KB Output is correct
7 Correct 3 ms 4948 KB Output is correct
8 Correct 2 ms 4948 KB Output is correct
9 Correct 2 ms 4948 KB Output is correct
10 Correct 4 ms 4948 KB Output is correct
11 Correct 3 ms 4948 KB Output is correct
12 Correct 2 ms 4948 KB Output is correct
13 Correct 3 ms 4940 KB Output is correct
14 Correct 3 ms 4948 KB Output is correct
15 Correct 3 ms 5032 KB Output is correct
16 Correct 4 ms 4948 KB Output is correct
17 Correct 3 ms 5028 KB Output is correct
18 Correct 3 ms 4948 KB Output is correct
19 Correct 3 ms 4948 KB Output is correct
20 Correct 3 ms 4948 KB Output is correct
21 Correct 3 ms 4948 KB Output is correct
22 Correct 3 ms 4948 KB Output is correct
23 Correct 2 ms 4948 KB Output is correct
24 Correct 3 ms 4948 KB Output is correct
25 Correct 3 ms 5040 KB Output is correct
26 Correct 3 ms 4948 KB Output is correct
27 Correct 3 ms 4948 KB Output is correct
28 Correct 3 ms 4948 KB Output is correct
29 Correct 3 ms 4948 KB Output is correct
30 Correct 3 ms 4948 KB Output is correct
31 Correct 3 ms 4968 KB Output is correct
32 Correct 3 ms 4948 KB Output is correct
33 Correct 3 ms 5040 KB Output is correct
34 Correct 3 ms 4948 KB Output is correct
35 Correct 3 ms 4948 KB Output is correct
36 Correct 11 ms 5556 KB Output is correct
37 Correct 12 ms 5588 KB Output is correct
38 Correct 10 ms 5536 KB Output is correct
39 Correct 16 ms 5588 KB Output is correct
40 Correct 12 ms 5520 KB Output is correct
41 Correct 15 ms 5588 KB Output is correct
42 Correct 14 ms 5536 KB Output is correct
43 Correct 7 ms 5332 KB Output is correct
44 Correct 9 ms 5536 KB Output is correct
45 Correct 9 ms 5588 KB Output is correct
46 Correct 11 ms 5540 KB Output is correct
47 Correct 9 ms 5572 KB Output is correct
48 Correct 10 ms 5496 KB Output is correct
49 Correct 7 ms 5460 KB Output is correct
50 Correct 10 ms 5540 KB Output is correct
51 Correct 10 ms 5576 KB Output is correct
52 Correct 8 ms 5588 KB Output is correct
53 Correct 7 ms 5556 KB Output is correct
54 Correct 10 ms 5552 KB Output is correct
55 Correct 8 ms 5540 KB Output is correct
56 Correct 5 ms 5540 KB Output is correct