#include using namespace std; using ll=long long; using ull=unsigned long long; using pll=pair; using tll=tuple; using ld=long double; const ll INF=(1ll<<60); #define rep(i,n) for (ll i=0;i<(ll)(n);i++) #define replr(i,l,r) for (ll i=(ll)(l);i<(ll)(r);i++) #define all(v) v.begin(),v.end() #define len(v) ((ll)v.size()) 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> n; vector p(n,-1); vector cnt(n,0); replr(i,1,n){ cin >> p[i]; p[i]--; cnt[i]++; cnt[p[i]]++; } string s(n,'x'); replr(i,1,n) cin >> s[i]; ll q; cin >> q; vector u(q),v(q); rep(i,q){ cin >> u[i] >> v[i]; u[i]--; v[i]--; } ll mx=0; rep(i,n){ chmax(mx,cnt[i]); } assert(mx==n-1); }