oj.uz

Submission #390459

# Submission time Handle Problem Language Result Execution time Memory
390459 2021-04-16T06:01:45 Z keta_tsimakuridze JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 13 ms 5488 KB 
#include<bits/stdc++.h>
#define f first
#define int long long
#define s second
using namespace std;
const int N=2e5+5,mod=1e9+7;
int t,ans,pref[N],n,k,L[N],R[N];
string s;
 main(){
	// t=1;
	cin>>n>>k;
	cin>>s;
	s='#'+s+'#';
	int cnt=0,r=0;
	for(int i=0;i<=n;i++){
		if( s[i]=='J') cnt--;
		while(r+1<=n && cnt<k) {
			r++;
			if(s[r]=='J') cnt++;
		}
		R[i]=r;
		if(cnt < k) R[i]=-1;
		for(int j=0;j<3;j++){
			pref[i]=pref[i-1];
		}
		if(s[i]=='O') pref[i]++;
	} 
	cnt=0; r=n+1;
	for(int i=n+1;i>=1;i--){
		if(s[i]=='I') cnt--;
		while(r-1>=1 && cnt<k) {
			r--;
			if(s[r]=='I') cnt++;
		}
		L[i]=r;
		if(cnt<k) L[i]=-1;
	}
	r=1; ans=n+5;

	for(int i=0;i<=n;i++){
		if(R[i]==-1) break;
		while(r<=n+1 && (L[r]==-1  || pref[L[r]]-pref[R[i]]<k)) r++;
		if(L[r]!=-1 && pref[L[r]]-pref[R[i]]>=k)ans=min(ans,r-i-1-3*k);
	}
	if(ans==n+5) cout<<-1;
	else cout<<ans;
}

Compilation message

ho_t2.cpp:9:7: warning: ISO C++ forbids declaration of 'main' with no type [-Wreturn-type]
    9 |  main(){
      |       ^

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 396 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct

Subtask #3
87.0 / 87.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 204 KB Output is correct
2 Correct 1 ms 204 KB Output is correct
3 Correct 1 ms 300 KB Output is correct
4 Correct 1 ms 204 KB Output is correct
5 Correct 1 ms 300 KB Output is correct
6 Correct 1 ms 300 KB Output is correct
7 Correct 1 ms 204 KB Output is correct
8 Correct 1 ms 204 KB Output is correct
9 Correct 1 ms 204 KB Output is correct
10 Correct 1 ms 204 KB Output is correct
11 Correct 1 ms 204 KB Output is correct
12 Correct 1 ms 204 KB Output is correct
13 Correct 1 ms 204 KB Output is correct
14 Correct 1 ms 204 KB Output is correct
15 Correct 1 ms 336 KB Output is correct
16 Correct 1 ms 332 KB Output is correct
17 Correct 1 ms 332 KB Output is correct
18 Correct 1 ms 332 KB Output is correct
19 Correct 1 ms 332 KB Output is correct
20 Correct 1 ms 332 KB Output is correct
21 Correct 1 ms 332 KB Output is correct
22 Correct 1 ms 332 KB Output is correct
23 Correct 1 ms 332 KB Output is correct
24 Correct 1 ms 332 KB Output is correct
25 Correct 1 ms 332 KB Output is correct
26 Correct 1 ms 332 KB Output is correct
27 Correct 1 ms 308 KB Output is correct
28 Correct 1 ms 396 KB Output is correct
29 Correct 1 ms 336 KB Output is correct
30 Correct 1 ms 332 KB Output is correct
31 Correct 1 ms 332 KB Output is correct
32 Correct 1 ms 332 KB Output is correct
33 Correct 1 ms 332 KB Output is correct
34 Correct 1 ms 332 KB Output is correct
35 Correct 1 ms 332 KB Output is correct
36 Correct 11 ms 5100 KB Output is correct
37 Correct 12 ms 5488 KB Output is correct
38 Correct 12 ms 5436 KB Output is correct
39 Correct 13 ms 5460 KB Output is correct
40 Correct 12 ms 5460 KB Output is correct
41 Correct 12 ms 5436 KB Output is correct
42 Correct 13 ms 5460 KB Output is correct
43 Correct 8 ms 3552 KB Output is correct
44 Correct 9 ms 4268 KB Output is correct
45 Correct 12 ms 5476 KB Output is correct
46 Correct 12 ms 5460 KB Output is correct
47 Correct 12 ms 5464 KB Output is correct
48 Correct 11 ms 5456 KB Output is correct
49 Correct 8 ms 3796 KB Output is correct
50 Correct 12 ms 5412 KB Output is correct
51 Correct 12 ms 5424 KB Output is correct
52 Correct 10 ms 5316 KB Output is correct
53 Correct 10 ms 5460 KB Output is correct
54 Correct 9 ms 5460 KB Output is correct
55 Correct 9 ms 5428 KB Output is correct
56 Correct 9 ms 5460 KB Output is correct