oj.uz

Submission #675366

# Submission time Handle Problem Language Result Execution time Memory
675366 2022-12-27T06:01:27 Z sudheerays123 JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 16 ms 10056 KB 
#include<bits/stdc++.h>
using namespace std;
#define fast ios_base::sync_with_stdio(false); cin.tie(NULL); cout.tie(NULL);
#define ll long long int
const ll N = 100+5 , INF = 1e18 , MOD = 1e9+7;

void solve(){

	ll n,k;
	string s;

	cin >> n >> k >> s;
	s = ' '+s;

	vector<ll> prej(n+5),preo(n+5),prei(n+5);
	vector<ll> nearj(n+5),nearo(n+5),neari(n+5);
	ll lastj = 0 , lasto = 0 , lasti = 0;

	for(ll i = 1; i <= n; i++){
		prej[i] = prej[i-1]+(s[i] == 'J');
		preo[i] = preo[i-1]+(s[i] == 'O');
		prei[i] = prei[i-1]+(s[i] == 'I');

		nearj[i] = lastj;
		neari[i] = lasti;
		nearo[i] = lasto;

		if(s[i] == 'J') lastj = i;
		else if(s[i] == 'O') lasto = i; 
		else lasti = i;
	}

	ll ans = INF;

	for(ll i = 1; i <= n; i++){
		if(s[i] == 'I'){

			ll x = i;

			ll low = 1, high = x;
			ll ind1 = 0;

			while(low <= high){
				ll mid = (low+high)/2;
				if(prei[x]-prei[mid-1] >= k){
					ind1 = mid;
					low = mid+1;
				}
				else high = mid-1;
			}

			x = ind1;
			x = nearo[x];

			low = 1, high = x;
			ll ind2 = 0;

			while(low <= high){

				ll mid = (low+high)/2;
				if(preo[x]-preo[mid-1] >= k){
					ind2 = mid;
					low = mid+1;
				}
				else high = mid-1;
			}

			x = ind2;
			x = nearj[x];

			low = 1, high = x;
			ll ind3 = 0;

			while(low <= high){
				ll mid = (low+high)/2;
				if(prej[x]-prej[mid-1] >= k){
					ind3 = mid;
					low = mid+1;
				}
				else high = mid-1;
			}

			x = ind3;

			if(x > 0) ans = min(ans,(i-x+1)-(3*k));
		}
	}

	if(ans == INF) ans = -1;
	cout << ans;
}

int main(){

	fast;

	ll tc = 1;
	// cin >> tc;
	while(tc--) solve();

	return 0;
}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 448 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 448 KB Output is correct
20 Correct 1 ms 448 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 452 KB Output is correct
29 Correct 1 ms 448 KB Output is correct
30 Correct 1 ms 448 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 448 KB Output is correct
34 Correct 1 ms 448 KB Output is correct
35 Correct 1 ms 340 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 0 ms 212 KB Output is correct
2 Correct 0 ms 212 KB Output is correct
3 Correct 0 ms 212 KB Output is correct
4 Correct 0 ms 212 KB Output is correct
5 Correct 0 ms 212 KB Output is correct
6 Correct 1 ms 212 KB Output is correct
7 Correct 0 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 0 ms 212 KB Output is correct
11 Correct 0 ms 212 KB Output is correct
12 Correct 0 ms 212 KB Output is correct
13 Correct 0 ms 212 KB Output is correct
14 Correct 1 ms 212 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 448 KB Output is correct
17 Correct 1 ms 448 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 448 KB Output is correct
20 Correct 1 ms 448 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 340 KB Output is correct
23 Correct 0 ms 340 KB Output is correct
24 Correct 1 ms 340 KB Output is correct
25 Correct 1 ms 340 KB Output is correct
26 Correct 1 ms 468 KB Output is correct
27 Correct 1 ms 340 KB Output is correct
28 Correct 1 ms 452 KB Output is correct
29 Correct 1 ms 448 KB Output is correct
30 Correct 1 ms 448 KB Output is correct
31 Correct 0 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 0 ms 448 KB Output is correct
34 Correct 1 ms 448 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 13 ms 9384 KB Output is correct
37 Correct 15 ms 10012 KB Output is correct
38 Correct 16 ms 10056 KB Output is correct
39 Correct 16 ms 9828 KB Output is correct
40 Correct 15 ms 9948 KB Output is correct
41 Correct 16 ms 10012 KB Output is correct
42 Correct 15 ms 10012 KB Output is correct
43 Correct 7 ms 6484 KB Output is correct
44 Correct 8 ms 7880 KB Output is correct
45 Correct 11 ms 10012 KB Output is correct
46 Correct 11 ms 10012 KB Output is correct
47 Correct 11 ms 10012 KB Output is correct
48 Correct 14 ms 10048 KB Output is correct
49 Correct 8 ms 6620 KB Output is correct
50 Correct 12 ms 10012 KB Output is correct
51 Correct 11 ms 10012 KB Output is correct
52 Correct 8 ms 9556 KB Output is correct
53 Correct 8 ms 10012 KB Output is correct
54 Correct 12 ms 10012 KB Output is correct
55 Correct 8 ms 10012 KB Output is correct
56 Correct 7 ms 10008 KB Output is correct