Submission #1182983

#	Time	Username	Problem	Language	Result	Execution time	Memory
1182983		user736482	JJOOII 2 (JOI20_ho_t2)	C++20	0 / 100	0 ms	320 KiB

ho_t2

#pragma GCC optimize("O3")
#include <bits/stdc++.h>
using namespace std;
#define ll long long
#define ld long double
#define pb push_back
#define ff first
#define ss second
#define MOD 1000000009
#define INF 1000000019
#define INFL 1000000000000000099LL

ll a,b,c,t,n,k,k2,k3,k4,ans;
string s;


int main()
{
    ios_base::sync_with_stdio(0);cin.tie(0);
    cin>>n>>k>>s;
    k2=k;
    for(a=0;a<n;a++){
        if(s[a]=='J')
            k2--;
        if(k2==0)
            break;
    }
    k3=k;
    for(b=a+1;b<n;b++){
        if(s[b]=='O')
            k3--;
        if(k3==0)
            break;
    }
    k4=k;
    for(c=b+1;c<n;c++){
        if(s[c]=='I')
            k4--;
        if(k4==0)
            break;
    }
    if(c>=n){
        cout<<-1;
        return 0;
    }
    ans=c+1-3*k;
    for(ll i=0;i<n;i++){
        if(s[i]!='J')
            ans=min(ans,c-i-3*k);
        else
            k2++;
        if(k2!=0)
        for(a=a+1;a<n;a++){
            if(s[a]=='O')
                k3++;
            if(s[a]=='J')
                k2--;
            if(k2==0)
                break;
        }
        if(k3!=0)
        for(b=max(b+1,a+1);b<n;b++){
            if(s[b]=='I')
                k4++;
            if(s[b]=='O')
                k3--;
            if(k3==0)
                break;
        }
        if(k4!=0)
        for(c=max(c+1,b+1);c<n;c++){
            if(s[a]=='I')
                k4--;
            if(k4==0)
                break;
        }
        if(c>=n || b>=n || a>=n){
            cout<<ans;
            return 0;
        }
        ans=min(ans,c-i-3*k);
        
    }
    return 0;
}

• Subtask 1: 0 / 1
• Subtask 2: 0 / 12
• Subtask 3: 0 / 87