oj.uz

Submission #702510

# Submission time Handle Problem Language Result Execution time Memory
702510 2023-02-24T08:32:29 Z 1075508020060209tc JJOOII 2 (JOI20_ho_t2) C++14
100 / 100
 35 ms 8636 KB 
//#pragma GCC optimize("O3")
#include<bits/stdc++.h>
using namespace std;
#define int long long
#define X first
#define Y second
int n;int K;
string s;
int psj[200005];
int pso[200005];
int psi[200005];

int dpj[200005];
int dpi[200005];


signed main(){
cin>>n>>K>>s;
s="*"+s;

for(int i=1;i<=n;i++){
    psj[i]=psj[i-1];
    pso[i]=pso[i-1];
    psi[i]=psi[i-1];
    if(s[i]=='I'){
        psi[i]++;
    }
    if(s[i]=='O'){
        pso[i]++;
    }
    if(s[i]=='J'){
        psj[i]++;
    }
}

for(int i=1;i<=n;i++){
        dpj[i]=1e16;
    if(s[i]!='J'){continue;}
    if(psj[i]<K){continue;}
    int l=0;int r=i;
    while(l<r){
        int mi=l+(r-l+1)/2;
        if(mi==0||(mi!=0&&psj[i]-psj[mi-1]>=K)){
            l=mi;
        }else{
            r=mi-1;
        }
    }
    if(l!=0){
        dpj[i]=i-l+1-K;
    }
}


for(int i=1;i<=n;i++){
        dpi[i]=1e16;
    if(s[i]!='I'){continue;}
    if(psi[n]-psi[i-1]<K){continue;}
    int l=i+K-1;int r=n+1;
    while(l<r){
        int mi=l+(r-l)/2;
        if(mi==n+1||(mi!=n+1&&psi[mi]-psi[i-1]>=K)){
            r=mi;
        }else{
            l=mi+1;
        }
    }
    if(l!=n+1){
        dpi[i]=l-i+1-K;
    }
}
dpj[0]=1e16;
int ans=1e16;
int mnv=1e16;
int lit=0;
for(int i=1;i<=n;i++){
    if(dpi[i]<=n&&pso[i-1]>=K){

     while(lit+1<=n&&pso[i-1]-pso[lit+1]>=K){
            lit++;
            mnv=min(mnv,dpj[lit]-lit);
     }
     ans=min(ans,dpi[i]+i-1+mnv-K);


    }

}
/*
for(int i=1;i<=n;i++){
    if(dpj[i]>n){dpj[i]=-1;}
    if(dpi[i]>n){dpi[i]=-1;}
    cout<<dpj[i]<<" ";
}cout<<endl;
for(int i=1;i<=n;i++){
    cout<<dpi[i]<<" ";
}*/
if(ans>n){
    cout<<-1<<endl;return 0;
}
cout<<ans<<endl;


}

Subtask #1
1.0 / 1.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 340 KB Output is correct

Subtask #2
12.0 / 12.0

# Verdict Execution time Memory Grader output
1 Correct 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 432 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 440 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 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 436 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 436 KB Output is correct
34 Correct 1 ms 340 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 1 ms 340 KB Output is correct
2 Correct 1 ms 212 KB Output is correct
3 Correct 1 ms 340 KB Output is correct
4 Correct 1 ms 212 KB Output is correct
5 Correct 1 ms 312 KB Output is correct
6 Correct 1 ms 340 KB Output is correct
7 Correct 1 ms 340 KB Output is correct
8 Correct 1 ms 340 KB Output is correct
9 Correct 1 ms 340 KB Output is correct
10 Correct 1 ms 340 KB Output is correct
11 Correct 1 ms 340 KB Output is correct
12 Correct 1 ms 212 KB Output is correct
13 Correct 1 ms 212 KB Output is correct
14 Correct 0 ms 340 KB Output is correct
15 Correct 1 ms 340 KB Output is correct
16 Correct 1 ms 340 KB Output is correct
17 Correct 1 ms 340 KB Output is correct
18 Correct 1 ms 340 KB Output is correct
19 Correct 1 ms 340 KB Output is correct
20 Correct 1 ms 340 KB Output is correct
21 Correct 1 ms 340 KB Output is correct
22 Correct 1 ms 432 KB Output is correct
23 Correct 1 ms 308 KB Output is correct
24 Correct 1 ms 440 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 340 KB Output is correct
29 Correct 1 ms 340 KB Output is correct
30 Correct 1 ms 436 KB Output is correct
31 Correct 1 ms 340 KB Output is correct
32 Correct 1 ms 340 KB Output is correct
33 Correct 1 ms 436 KB Output is correct
34 Correct 1 ms 340 KB Output is correct
35 Correct 1 ms 340 KB Output is correct
36 Correct 17 ms 8044 KB Output is correct
37 Correct 18 ms 8552 KB Output is correct
38 Correct 21 ms 8632 KB Output is correct
39 Correct 35 ms 8472 KB Output is correct
40 Correct 18 ms 8584 KB Output is correct
41 Correct 19 ms 8588 KB Output is correct
42 Correct 19 ms 8608 KB Output is correct
43 Correct 10 ms 5324 KB Output is correct
44 Correct 13 ms 6708 KB Output is correct
45 Correct 17 ms 8608 KB Output is correct
46 Correct 17 ms 8636 KB Output is correct
47 Correct 17 ms 8572 KB Output is correct
48 Correct 17 ms 8612 KB Output is correct
49 Correct 12 ms 5840 KB Output is correct
50 Correct 20 ms 8600 KB Output is correct
51 Correct 17 ms 8608 KB Output is correct
52 Correct 11 ms 8344 KB Output is correct
53 Correct 13 ms 8544 KB Output is correct
54 Correct 15 ms 8576 KB Output is correct
55 Correct 12 ms 8608 KB Output is correct
56 Correct 8 ms 8608 KB Output is correct