oj.uz

Submission #675346

# Submission time Handle Problem Language Result Execution time Memory
675346 2022-12-27T05:36:59 Z sudheerays123 JJOOII 2 (JOI20_ho_t2) C++17
100 / 100
 124 ms 44548 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> nearj(n+5) , nearo(n+5),neari(n+5);
	ll lastj = 0 , lasto = 0 , lasti = 0;

	for(ll i = 1; i <= n; i++){

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

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

	vector<vector<ll>> par(n+5,vector<ll>(log2(k)+5));

	for(ll i = 1; i <= n; i++){
		if(s[i] == 'J') par[i][0] = nearj[i];
		else if(s[i] == 'O') par[i][0] = nearo[i];
		else par[i][0] = neari[i];
	}

	for(ll j = 1; j <= log2(k); j++){
		for(ll i = 1; i <= n; i++){
			par[i][j] = par[par[i][j-1]][j-1];
		}
	}
	
	ll ans = INF;
	ll jump = k-1;

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

			ll x = i;

			for(ll j = 0; j <= log2(k); j++){
				if(jump&(1ll<<j)){
					x = par[x][j];
				}
			}
			
			x = nearo[x];
			for(ll j = 0; j <= log2(k); j++){
				if(jump&(1ll<<j)){
					x = par[x][j];
				}
			}

			x = nearj[x];
			for(ll j = 0; j <= log2(k); j++){
				if(jump&(1ll<<j)){
					x = par[x][j];
				}
			}

			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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 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 0 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 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 0 ms 212 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 724 KB Output is correct
20 Correct 1 ms 724 KB Output is correct
21 Correct 1 ms 724 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 724 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 1 ms 724 KB Output is correct
29 Correct 1 ms 724 KB Output is correct
30 Correct 1 ms 724 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 724 KB Output is correct
33 Correct 1 ms 596 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 724 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 0 ms 212 KB Output is correct
7 Correct 0 ms 212 KB Output is correct
8 Correct 0 ms 212 KB Output is correct
9 Correct 0 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 0 ms 212 KB Output is correct
15 Correct 1 ms 468 KB Output is correct
16 Correct 1 ms 596 KB Output is correct
17 Correct 1 ms 596 KB Output is correct
18 Correct 1 ms 596 KB Output is correct
19 Correct 1 ms 724 KB Output is correct
20 Correct 1 ms 724 KB Output is correct
21 Correct 1 ms 724 KB Output is correct
22 Correct 1 ms 724 KB Output is correct
23 Correct 1 ms 468 KB Output is correct
24 Correct 1 ms 724 KB Output is correct
25 Correct 1 ms 724 KB Output is correct
26 Correct 1 ms 724 KB Output is correct
27 Correct 1 ms 724 KB Output is correct
28 Correct 1 ms 724 KB Output is correct
29 Correct 1 ms 724 KB Output is correct
30 Correct 1 ms 724 KB Output is correct
31 Correct 1 ms 468 KB Output is correct
32 Correct 1 ms 724 KB Output is correct
33 Correct 1 ms 596 KB Output is correct
34 Correct 1 ms 724 KB Output is correct
35 Correct 1 ms 724 KB Output is correct
36 Correct 18 ms 17924 KB Output is correct
37 Correct 19 ms 19228 KB Output is correct
38 Correct 19 ms 19316 KB Output is correct
39 Correct 96 ms 37652 KB Output is correct
40 Correct 113 ms 41116 KB Output is correct
41 Correct 111 ms 41376 KB Output is correct
42 Correct 75 ms 35156 KB Output is correct
43 Correct 71 ms 25812 KB Output is correct
44 Correct 89 ms 32144 KB Output is correct
45 Correct 113 ms 41372 KB Output is correct
46 Correct 115 ms 41516 KB Output is correct
47 Correct 115 ms 41412 KB Output is correct
48 Correct 115 ms 41448 KB Output is correct
49 Correct 72 ms 27612 KB Output is correct
50 Correct 113 ms 41380 KB Output is correct
51 Correct 124 ms 41492 KB Output is correct
52 Correct 107 ms 42860 KB Output is correct
53 Correct 115 ms 44544 KB Output is correct
54 Correct 18 ms 19484 KB Output is correct
55 Correct 97 ms 44508 KB Output is correct
56 Correct 104 ms 44548 KB Output is correct