Submission #400475

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Source Code Expand

#include "bits/stdc++.h"

using namespace std;

typedef vector<int> vi;
typedef pair<int,int> pii;
typedef long long ll;

#define dump(x)  cerr << #x << " = " << (x) << endl
#define rep(i,n) for(int i=0;i<(n);i++)
#define all(a)  (a).begin(),(a).end()
#define pb push_back


int main(){
    int n;
    string s;
    cin>>n>>s;
    
    string now="b";
    for(int i=1;i<100;i++){
        if(now==s){
            cout<<i-1<<endl;
            return 0;
        }

        
        if(i%3==1){
            now='a'+now+'c';
        }
        else if(i%3==2){
            now='c'+now+'a';
        }
        else if(i%3==0){
            now='b'+now+'b';
        }
        
    }
    
    cout<<"-1"<<endl;
    
    
    return 0;
}

Submission Info

Judge Result