Submission #655907

#	Time	Username	Problem	Language	Result	Execution time	Memory
655907		PikachudoraEHE	JJOOII 2 (JOI20_ho_t2)	C++14	0 / 100	0 ms	212 KiB

ho_t2

#include<bits/stdc++.h>
using namespace std;
char s[]={'J','O','I','Z'};
char *c = s;
int main(){
    ios_base::sync_with_stdio(0);cin.tie(0);
    int n,m;cin>>n>>m;int p = 0;int chk = 0;
    string a;cin>>a;int cnt = 0;int ch=0;
    for(int i=0;i<=n;i++){
        //cout<<"O";
        if(a[i]==*c&&chk==0){
            cnt++;chk=1;
            if(cnt%m==0){
                c++;
            }
            //cout<<"1";
        }
        else if(*c=='Z'){
            ch = 1;
            //cout<<"final";
            break;
        }
        else if(a[i]==*c){
            cnt++;
            if(cnt%m==0){
                c++;
            }
            //cout<<c;
        }
        else if(chk){
            p++;
            //cout<<"3";
        }
    }
    if(ch){
        cout<<p;
    }
    else{
        cout<<"-1";
    }

return 0;
}

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