#include<bits/stdc++.h>
using namespace std;
typedef long long ll;
typedef unsigned long long ull;
typedef long double ld;
#define mp make_pair
#define PI pair<ll,ll>
#define poly vector<ll>
#define mem(a) memset((a),0,sizeof(a))
#define For(i,l,r) for(int i=(int)(l);i<=(int)(r);i++)
#define Rep(i,r,l) for(int i=(int)(r);i>=(int)(l);i--)
#define pb push_back
#define fi first
#define se second
#define SZ(x) ((int)(x.size()))
#define re resize
inline char gc(){
	static char buf[100000],*p1=buf,*p2=buf;
	return p1==p2&&(p2=(p1=buf)+fread(buf,1,100000,stdin),p1==p2)?EOF:*p1++;
}
#define gc getchar
inline ll read(){
	ll x=0; char ch=gc();bool positive=1;
	for(; !isdigit(ch); ch = gc())if (ch == '-')positive = 0;
	for(; isdigit(ch); ch = gc())x = x * 10 + ch - '0';
	return positive ? x : -x;
}
inline void write(ll a){
	if(a<0){
		a=-a; putchar('-');
	}
	if(a>=10)write(a/10);
	putchar('0'+a%10);
}
inline void writeln(ll a){write(a); putchar('\n');}
inline void wri(ll a){write(a); putchar(' ');}
ll rnd(){
	return (ll)rand()<<15^rand();
}
const int M=6;
const string YC="TTPC";
ll n,g,a[M];
ll qj;
vector<int> s[M];
string S[M];
void mer(int x,int y,int z){
    a[z]=a[x]*a[y]/__gcd(a[x],a[y]);
    for(int i=0;i<a[z];i++)s[z].pb(s[x][i%a[x]]&&s[y][i%a[y]]);
}
void exgcd(int a,int b,int &x,int &y){
    if(b==0){
        if(a>0)x=1; else x=-1;
        y=0;
        return;
    }
    exgcd(b,a%b,y,x);
    y-=a/b*x;
}
int ask(const vector<ll> &v,auto l,auto r){
    if(l>=0){
        return r-l;
    }else{
        return (r-v.begin())+
        (v.end()-l);
    }
}
vector<ll> v[1000005],vv[1000005];
int main(){ 
    #ifdef Brollan
        freopen("1.in","r",stdin);
    #endif
    cin>>n;
    For(i,0,3){
        cin>>S[i];
        a[i]=S[i].length();
        for(int j=0;j<a[i];j++)s[i].pb(S[i][j]==YC[i]);
    }
    mer(0,1,4);
    mer(2,3,5);
    int x,y;
    exgcd(a[4],a[5],x,y);
    g=__gcd(a[4],a[5]);
    //cerr<<a[4]<<" "<<a[5]<<endl;
    ll sx=(ll)a[4]*a[5]/g;
    ll l=0,r=sx*n;
    qj=x;
    //For(i,0,a[4]-1)cerr<<s[4][i]; cerr<<endl;
    //For(i,0,a[5]-1)cerr<<s[5][i]; cerr<<endl;
            for(int o=0;o<g;o++){
                //cerr<<sx<<endl;
                for(int i=o;i<a[5];i+=g)if(s[5][i]){
                    v[o].pb((sx-a[4]*x*(i/g)%sx)%sx);
                    //if(mid==8&&i%5==2)cerr<<(sx+a[4]*x*(i/g)%sx)%sx<<endl;
                }
                sort(v[o].begin(),v[o].end());
            }

            for(int o=0;o<g;o++){
                for(int i=o;i<a[4];i+=g)if(s[4][i]){
                    ll t=((-a[4]*x*(i/g)+i)%sx+sx)%sx;
                    //cerr<<sx<<endl;
                    //if(mid==8&&i%5==2)cerr<<(sx+a[4]*x*(i/g)%sx)%sx<<endl;
                    vv[o].pb(t);
                }
                sort(vv[o].begin(),vv[o].end());
            }
    while(l<r){
        ll mid=(l+r)>>1,gb=mid%sx;qj=sx;
        ll sum=0;
        for(int o=0;o<g;o++){
        //x=a[1]*x*(b2-b1)/g+b1=a[4]xb1/g+b1-a[4]xb2/g
            unsigned dq=0,dq2=0;
            for(auto t:vv[o]){
                ll tmp=t-gb<0?t-gb+sx:t-gb;
                ll tmp2=t;
                if(dq&&v[o][dq-1]>=tmp)dq=0;
                while(dq<v[o].size()&&v[o][dq]<tmp){dq++; }
                while(dq2<v[o].size()&&v[o][dq2]<tmp2){dq2++; }
                sum+=mid/sx*v[o].size();
                sum+=t-gb>=0?dq2-dq:v[o].size()+dq2-dq;
            }
        }
        //cerr<<mid<<" "<<mid/sx<<" "<<sum<<endl;
        if(sum>=n)r=mid; else l=mid+1;
    }
    if(l==sx*n)puts("-1");else
    cout<<l+1<<endl;
}