#include "Anna.h"
#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long
#define vi vector<int>
#define vvi vector<vector<int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vb vector<bool>
#define mii map<int,int>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define in(a) int a; cin>>a
#define in2(a,b) int a,b; cin>>a>>b
#define in3(a,b,c) int a,b,c; cin>>a>>b>>c
#define in4(a,b,c,d) int a,b,c,d; cin>>a>>b>>c>>d
#define vin(v,n); vi v(n); f0r(i,n){cin>>v[i];}
#define out(a) cout<<a<<'\n'
#define out2(a,b) cout<<a<<' '<<b<<'\n'
#define out3(a,b,c) cout<<a<<' '<<b<<' '<<c<<'\n'
#define out4(a,b,c,d) cout<<a<<' '<<b<<' '<<c<<' '<<d<<'\n'
#define pout(a) cout<<a.first<<' '<<a.second<<'\n'
#define vout(v) for(auto u : v){cout<<u<<' ';} cout<<endl
#define dout(a) cout<<a<<' '<<#a<<endl
#define dout2(a,b) cout<<a<<' '<<#a<<' '<<b<<' '<<#b<<endl
#define yn(x); if(x){cout<<"YES"<<'\n';}else{cout<<"NO"<<'\n';}
const int leg = 1e9 + 7;
const int mod = 998244353;
using namespace std;
namespace {
int l = 130;
vector<char>crs = {'R','G','B'};
string gen(vi &v, string s){
vector<char>ret(v.size() + 1, 'X');
int n = v.size();
vi same;
f0r(i, n){
if(v[i] == 1){
for(auto ch : crs){
if(s[i] != ch && s[i+1] != ch){
ret[i] = ch; ret[i+1] = ch; break;
}
}
same.pb(i);
}
}
f0r(i, same.size()){
int cur = same[i] - 1;
while(cur >= 0 && (i == 0 || cur >= same[i-1] + 2)){
for(auto ch : crs){
if(s[cur] != ch && ret[cur+1] != ch){
ret[cur] = ch; break;
}
}
cur--;
}
}
string r = ""; for(auto u : ret)r += u;
return r;
}
}
std::pair<std::string, signed> anna(signed N, std::string S) {
vi v;
f0r(i,N)v.pb(0); v.pb(1);
for(int i = l - 3; i >= 4; i-=2){
f0r(j,i)v.pb(0);
f0r(j,l-i){
if(j % 2 == 0)v.pb(1);
else v.pb(0);
}
}
string ret = gen(v, S);
if(N < l){
return mp(ret.substr(0, N), N);
}
else{
return mp(ret.substr(0, N), l);
}
}
#include "Bruno.h"
#include<bits/stdc++.h>
#define pb push_back
#define mp make_pair
#define int long long
#define vi vector<int>
#define vvi vector<vector<int>>
#define pii pair<int, int>
#define vpii vector<pair<int, int>>
#define vc vector<char>
#define vb vector<bool>
#define mii map<int,int>
#define f0r(i,n) for(int i=0;i<n;i++)
#define FOR(i,k,n) for(int i=k;i<n;i++)
#define all(v) (v).begin(),(v).end()
#define rall(v) (v).rbegin(),(v).rend()
#define in(a) int a; cin>>a
#define in2(a,b) int a,b; cin>>a>>b
#define in3(a,b,c) int a,b,c; cin>>a>>b>>c
#define in4(a,b,c,d) int a,b,c,d; cin>>a>>b>>c>>d
#define vin(v,n); vi v(n); f0r(i,n){cin>>v[i];}
#define out(a) cout<<a<<'\n'
#define out2(a,b) cout<<a<<' '<<b<<'\n'
#define out3(a,b,c) cout<<a<<' '<<b<<' '<<c<<'\n'
#define out4(a,b,c,d) cout<<a<<' '<<b<<' '<<c<<' '<<d<<'\n'
#define pout(a) cout<<a.first<<' '<<a.second<<'\n'
#define vout(v) for(auto u : v){cout<<u<<' ';} cout<<endl
#define dout(a) cout<<a<<' '<<#a<<endl
#define dout2(a,b) cout<<a<<' '<<#a<<' '<<b<<' '<<#b<<endl
#define yn(x); if(x){cout<<"YES"<<'\n';}else{cout<<"NO"<<'\n';}
const int leg = 1e9 + 7;
const int mod = 998244353;
using namespace std;
namespace {
signed N,l;
} // namespace
void init(signed N, signed l) {
::N = N; ::l=l;
}
signed bruno(std::string u) {
if(u.size() == N)return 1;
vi v;
f0r(i, l-1){
v.pb(u[i] == u[i+1]);
}
int sum = 0; f0r(i, l-1)sum += v[i];
if(sum == 0)return 1;
int ans = 1 + (l - 2) * (sum - 1);
int f = -1;
f0r(i, l-2){
if(v[i] == v[i+1]){
f = i; break;
}
}
if(f != 0){
return ans + sum * 2 - 2 - f;
}
else{
int L = 0;
f0r(i, l-1){
if(v[i] == 0)L++;
else break;
}
return ans + sum * 2 - 2 + (l - (sum*2-1) - L);
}
}
