#include //#include //#include //#include #define rep(i, a) for (int i = (int)0; i < (int)a; ++i) #define rrep(i, a) for (int i = (int)a - 1; i >= 0; --i) #define REP(i, a, b) for (int i = (int)a; i < (int)b; ++i) #define RREP(i, a, b) for (int i = (int)a - 1; i >= b; --i) #define repl(i, a) for (ll i = (ll)0; i < (ll)a; ++i) #define pb push_back #define eb emplace_back #define all(x) x.begin(), x.end() #define rall(x) x.rbegin(), x.rend() #define popcount __builtin_popcount #define popcountll __builtin_popcountll #define fi first #define se second using ll = long long; constexpr ll mod = 1e9 + 7; constexpr ll mod_998244353 = 998244353; constexpr ll INF = 1LL << 60; // #pragma GCC target("avx2") // #pragma GCC optimize("O3") // #pragma GCC optimize("unroll-loops") //using lll=boost::multiprecision::cpp_int; //using Double=boost::multiprecision::number>;//仮数部が1024桁 template inline bool chmin(T &a, T b) { if (a > b) { a = b; return true; } return false; } template inline bool chmax(T &a, T b) { if (a < b) { a = b; return true; } return false; } ll mypow(ll x, ll n, const ll &p = -1) { //x^nをmodで割った余り if (p != -1) { x =(x%p+p)%p; } ll ret = 1; while (n > 0) { if (n & 1) { if (p != -1) ret = (ret * x) % p; else ret *= x; } if (p != -1) x = (x * x) % p; else x *= x; n >>= 1; } return ret; } using namespace std; //using namespace atcoder; using P=pair; P operator+(P x,P y){ return P{x.fi+y.fi,x.se+y.se}; } void solve() { string s; cin>>s; int n=s.size(); int ans=n; set

st; P pos={0,0}; st.emplace(pos); vector>v(6,vector

(3)); P a={-1,0},b={1,0},c={0,-1},d={0,1}; v[0][0]=a,v[0][1]=c,v[0][2]=b; v[1][0]=b,v[1][1]=a,v[1][2]=d; v[2][0]=b,v[2][1]=a,v[2][2]=c; v[3][0]=a,v[3][1]=d,v[3][2]=b; v[4][0]=c,v[4][1]=b,v[4][2]=a; v[5][0]=d,v[5][1]=b,v[5][2]=a; int cur=0; rep(i,n){ pos=pos+v[cur][s[i]-'a']; st.emplace(pos); if(cur==0){ if(s[i]=='a')cur=1; else if(s[i]=='b')cur=3; else cur=5; }else if(cur==1){ if(s[i]=='a')cur=0; else if(s[i]=='b')cur=4; else cur=2; }else if(cur==2){ if(s[i]=='a')cur=3; else if(s[i]=='b')cur=5; else cur=1; }else if(cur==3){ if(s[i]=='a')cur=2; else if(s[i]=='b')cur=0; else cur=4; }else if(cur==4){ if(s[i]=='a')cur=5; else if(s[i]=='b')cur=1; else cur=3; }else{ if(s[i]=='a')cur=4; else if(s[i]=='b')cur=2; else cur=0; } } cout<