#include //using namespace std; #pragma GCC target("avx") #pragma GCC optimize("O3") #pragma GCC optimize("unroll-loops") #pragma GCC target("sse,sse2,sse3,ssse3,sse4,popcnt,abm,mmx,avx,tune=native") #define rep(i,j,n) for(int i=(int)(j);i<(int)(n);i++) #define REP(i,j,n) for(int i=(int)(j);i<=(int)(n);i++) #define per(i,j,n) for(int i=(int)(j);(int)(n)<=i;i--) #define ALL(a) (a).begin(),(a).end() #define revALL(a) (a).rbegin(),(a).rend() #define pb emplace_back #define mp std::make_pair #define mtp std::make_tuple #define ln "\n" using std::endl; using std::cin; using std::cout; using ll=long long; using lint=__int128; using std::vector; using std::string; using std::upper_bound; using std::lower_bound; using vi=vector; using vii=vector; using pii=std::pair; using vs=vector; using vss=vector; using pss=std::pair; using vl=vector; using vll=vector; using pll=std::pair; // constexpr ll MOD=1e9+7; constexpr ll root=0; //constexpr ll MOD=998244353; constexpr ll root=3; //constexpr ll MOD=924844033; constexpr ll root=5; //constexpr ll MOD=10000000; constexpr ll root=0; //constexpr ll MOD=1e4; constexpr ll root=0; //constexpr ll MOD=1e5; constexpr ll root=0; constexpr ll MAX=1e6+10; constexpr ll inf=(1ll<<60); constexpr lint linf=(lint)inf*inf; void lout(lint N,string add){ string S; if(N<0){ S+='-'; N=-N; } string T; if(N==0) T+='0'; while(N){ T+=N%10+'0'; N/=10; } reverse(ALL(T)); S+=T; cout<>S; bool flag=0; if(S[0]=='-') flag=1; lint ret=0; rep(i,flag,S.size()) ret=ret*10+S[i]-'0'; if(flag) ret=-ret; return ret; } template class prique :public std::priority_queue, std::greater> {}; ll modpow(ll X,ll Y,ll mod){ ll ret=1; while(Y){ if(Y&1){ ret*=X; ret%=mod; } X*=X; X%=mod; Y>>=1; } return ret%mod; } template void extGCD(ll A,ll B,T &x,T &y){ if(B==0){ x=1; y=0; return; } extGCD(B,A%B,y,x); //(a-b)x+by=gcd(a,b) //ax+b(y-x)=gcd(a,b) y-=A/B*x; } template void solve_equation(ll A,ll B,ll C,T &x,T &y){ ll D=std::__gcd(A,B); if(C%D){ x=y=-1; return; } extGCD(A,B,x,y); ll E=A*B/D; x%=E; y%=E; x=x*(C/D)%E; y=y*(C/D)%E; } template struct Segment_tree{ ll N; T mem; vector node; Segment_tree(vector &X,T m):mem(m){ ll sz=X.size(); N=1; while(N0){ X=(X-1)/2; node[X]=Compare(node[X*2+1],node[X*2+2]); } } T Query(ll a,ll b,ll now=0,ll l=0,ll r=-1){ //[a,b),[l,r) if(r<0) r=N; if(r<=a||b<=l) return mem; if(a<=l&&r<=b) return node[now]; auto vl=Query(a,b,now*2+1,l,(l+r)/2),vr=Query(a,b,now*2+2,(l+r)/2,r); return Compare(vl,vr); } ll lower_bound(ll left,ll right,T val,ll now=0,ll l=0,ll r=-1){ if(r<0) r=N; if(node[now]=right||left>=r) return r; else if(now>=N-1) return l; ll vl=lower_bound(left,right,val,now*2+1,l,(l+r)/2); if(vl==(l+r)/2) return lower_bound(left,right,val,now*2+2,(l+r)/2,r); return vl; } }; template struct lazy_Segment_tree{ int N; vector node,lazy; T INF; vector flag; lazy_Segment_tree(vector X,T Y):INF(Y){ N=1; while(X.size()>N) N*=2; node.resize(2*N-1,Y); lazy.resize(2*N-1); flag.resize(2*N-1); rep(i,0,X.size()) node[i+N-1]=X[i]; per(i,N-2,0) node[i]=compare(node[i*2+1],node[i*2+2]); } T compare(T X,T Y){ return std::max(X,Y); } T plus(T X,int l,int r){ return X; } void eval(int now,int l,int r){ if(flag[now]){ if(r-l>1){ flag[now*2+1]=flag[now*2+2]=1; lazy[now*2+1]=lazy[now*2+2]=lazy[now]; } node[now]=lazy[now]; flag[now]=0; } } void update(int a,int b,T add,int now=0,int l=0,int r=-1){ if(r<0) r=N; eval(now,l,r); if(b<=l||r<=a) return; if(a<=l&&r<=b){ lazy[now]=add; flag[now]=1; eval(now,l,r); } else{ update(a,b,add,now*2+1,l,(r+l)/2); update(a,b,add,now*2+2,(r+l)/2,r); node[now]=compare(node[now*2+1],node[now*2+2]); } } T Query(int a,int b,int now=0,int l=0,int r=-1){ if(r<0) r=N; eval(now,l,r); if(b<=l||r<=a) return INF; if(a<=l&&r<=b) return node[now]; return compare(Query(a,b,now*2+1,l,(r+l)/2),Query(a,b,now*2+2,(r+l)/2,r)); } ll lower_bound(ll left,ll right,T val,ll now=0,ll l=0,ll r=-1){ eval(now,l,r); if(r<0) r=N; if(node[now]=right||left>=r) return r; else if(now>=N-1) return l; ll vl=lower_bound(left,right,val,now*2+1,l,(l+r)/2); if(vl==(l+r)/2) return lower_bound(left,right,val,now*2+2,(l+r)/2,r); return vl; } }; struct Binary_indexed_tree{ int N; vi bit; Binary_indexed_tree(int n):N(n){ bit.resize(N+1,0); } void add(int x,ll a){ x++; for(x;x<=N;x+=(x&-x)) bit[x]+=a; } ll sum(int x){ x++; ll ret=0; for(x;x>0;x-=(x&-x)) ret+=bit[x]; return ret; } ll lower_bound(ll X){ if(sum(N)0){ if(memo+ret<=N&&sum+bit[memo+ret] que; rep(i,0,N){ if(cnt[i]==0) que.push(i); } while(!que.empty()){ ll now=que.front(); que.pop(); ret.pb(now); for(auto next:edge[now]){ cnt[next]--; if(cnt[next]==0) que.push(next); } } return ret; } vii SCC(){ vii revedge(N),ver; vi ind(N); rep(i,0,N){ for(auto p:edge[i]) revedge[p].pb(i); } vi num(N,-1),po(N); vector seen(N); ll cnt=0; rep(i,0,N){ if(num[i]==-1){ dfs(i,num,cnt); } } rep(i,0,N) po[num[i]]=i; per(i,N-1,0){ ll X=po[i]; if(!seen[X]){ std::queue que; vi v; que.push(X); seen[X]=1; while(!que.empty()){ ll now=que.front(); que.pop(); v.pb(now); ind[now]=ver.size(); for(auto p:revedge[now]){ if(!seen[p]){ seen[p]=1; que.push(p); } } } ver.pb(v); } } return ver; } void dfs(ll now,vi &num,ll &cnt){ num[now]=0; for(auto next:edge[now]){ if(num[next]==-1){ dfs(next,num,cnt); } } num[now]=cnt++; } }; struct Tree{ int N; vii dp; vi par; vi dist; vi subtree; vii edge; Tree(vii E):edge(E){ N=edge.size(); dp.resize(N); par.resize(N); dist.resize(N,-1); for(int i=0;i que; que.push(0); while(!que.empty()){ int now=que.front(); que.pop(); for(int i=0;i>=1; } } if(X==Y) return X; for(int i=19;i>=0;i--){ if(dp[X][i]!=dp[Y][i]){ X=dp[X][i]; Y=dp[Y][i]; } } return dp[X][0]; } void Subtree(){ subtree.resize(N,-1); dfs(0); } void dfs(ll now){ subtree[now]=1; for(auto next:edge[now]){ if(subtree[next]==-1){ dfs(next); subtree[now]+=subtree[next]; } } } }; template struct max_flow{ struct Edge{ int to; T cap; int rev; }; int N; vector> edge; vector dist,itr; max_flow(vii e,vii w){ N=e.size(); edge.resize(N); rep(i,0,N){ rep(j,0,e[i].size()){ edge[i].pb((Edge){(int)e[i][j],(T)w[i][j],(int)edge[e[i][j]].size()}); edge[e[i][j]].pb((Edge){i,0,(int)edge[i].size()-1}); } } } void add_edge(int from,int to,T cap){ edge[from].pb((Edge){to,cap,(int)edge[to].size()}); edge[to].pb((Edge){from,0,(int)edge[from].size()-1}); } void bfs(int s){ dist.assign(N,-1); std::queue que; dist[s]=0; que.push(s); while(!que.empty()){ int now=que.front(); que.pop(); for(auto p:edge[now]){ int next=p.to; if(p.cap>0&&dist[next]<0){ dist[next]=dist[now]+1; que.push(next); } } } } T dfs(int now,int t,T f){ if(now==t) return f; for(;itr[now]0&&dist[now]0){ p.cap-=mem; edge[p.to][p.rev].cap+=mem; return mem; } } } return 0; } T Query(int s,int t){ T ret=0; while(1){ bfs(s); if(dist[t]<0) break; itr.assign(N,0); while(1){ int mem=dfs(s,t,(1<<30)); if(mem<=0) break; ret+=mem; } } return ret; } }; struct min_cost_flow{ struct Edge{ int to,cap,rev; ll cost; }; int N; vector> edge; vector dist,h; void add_edge(int from,int to,int cap,ll cost){ edge[from].pb((Edge){to,cap,(int)edge[to].size(),cost}); edge[to].pb((Edge){from,0,(int)edge[from].size()-1,-cost}); } min_cost_flow(vii e,vii m,vii w){ N=e.size(); edge.resize(N); rep(i,0,N){ rep(j,0,e[i].size()){ add_edge(i,e[i][j],m[i][j],w[i][j]); } } } void potential(){ h.assign(N,0); vector> edge2(N); vii weight(N); vector cnt(N); rep(i,0,N){ for(auto e:edge[i]){ if(e.cap>0&&e.cost<0){ edge2[i].pb(e.to); weight[i].pb(-e.cost); cnt[e.to]++; } } } std::queue que; rep(i,0,N){ if(cnt[i]==0) que.push(i); } vector ver; while(!que.empty()){ int now=que.front(); que.pop(); ver.pb(now); for(auto next:edge2[now]){ cnt[next]--; if(cnt[next]==0) que.push(next); } } per(i,N-1,0){ rep(j,0,edge2[ver[i]].size()){ int next=edge2[ver[i]][j]; h[ver[i]]=std::max(h[ver[i]],h[next]+weight[ver[i]][j]); } } } ll Query(int s,int t,int f){ ll ret=0; potential(); while(f){ vi dist(N,inf); vector memv(N),meme(N); dist[s]=0; prique> que; que.push(mp(0,s)); while(!que.empty()){ auto now=que.top().second; if(dist[now]0&&dist[next]>dist[now]+h[now]-h[next]+e.cost){ dist[next]=dist[now]+h[now]-h[next]+e.cost; memv[next]=now; meme[next]=i; que.push(mp(dist[next],next)); } } } if(dist[t]==inf) return -1; int now=t,max=f; while(now!=s){ auto& e=edge[memv[now]][meme[now]]; max=std::min(max,e.cap); now=memv[now]; } f-=max; now=t; while(now!=s){ auto& e=edge[memv[now]][meme[now]]; e.cap-=max; auto& e2=edge[e.to][e.rev]; e2.cap+=max; now=memv[now]; } rep(i,0,N) h[i]+=dist[i]; ret+=h[t]*max; } return ret; } }; struct Fast_Fourier_Transform{ void dft(vector> &func,int inverse){ int siz=func.size(); if(siz==1) return; vector> left,right; rep(i,0,siz/2){ left.pb(func[i*2]); right.pb(func[i*2+1]); } dft(left,inverse); dft(right,inverse); std::complex now=1,zeta=std::polar(1.0,inverse*2.0*acos(-1)/siz); rep(i,0,siz){ func[i]=left[i%(siz/2)]+now*right[i%(siz/2)]; now*=zeta; } } template vector multiply(vector f,vector g){ vector> nf,ng; int siz=1; while(siz ret(siz); rep(i,0,siz) ret[i]=nf[i].real()/siz; return ret; } }; struct Numver_Theoretic_Transform{ vii mem; Numver_Theoretic_Transform(void){ mem.resize(25,vi(2)); rep(i,0,25){ mem[i][1]=modpow(root,MOD-1-(MOD-1)/(1< cnt; vector> next; Trie(int element,char low):let(element),lower(low){ cnt.resize(1); next.pb(vector(let,-1)); } void insert(string S){ int now=0; for(auto s:S){ int X=s-lower; if(next[now][X]==-1){ next[now][X]=cnt.size(); cnt.pb(0); next.pb(vector(lower,-1)); } now=next[now][X]; } cnt[now]++; } int get(string S){ int now=0; for(auto s:S){ int X=s-lower; if(next[now][X]==-1) return 0; now=next[now][X]; } return cnt[now]; } }; template struct tancomp{ int place(std::pair p){ if(p.first<=0&&p.second<0) return 0; if(p.first>0&&p.second<=0) return 1; if(p.first==0&&p.second==0) return 2; if(p.first>=0&&p.second>0) return 3; return 4; } bool operator()(const std::pair &l,const std::pair &r){ if(place(l)!=place(r)) return place(l) vector> Declination_sort(ll N,vector X,vector Y){ vector> ret(N); rep(i,0,N){ ret[i]=(mp(X[i],Y[i])); } sort(ALL(ret),tancomp()); return ret; } vi get_bases(vi A,ll max_digit){ int now=0; int N=A.size(); per(i,max_digit,0){ rep(j,now,N){ if(A[j]&(1ll< memo; rep(i,0,A.size()) memo[A[i]]=0; ll cnt=0; for(auto &p:memo) p.second=cnt++; rep(i,0,A.size()) A[i]=memo[A[i]]; } void dec(std::map &mem,ll X){ mem[X]--; if(mem[X]==0) mem.erase(X); } int main(){ std::ios::sync_with_stdio(false); std::cin.tie(nullptr); std::cout.tie(nullptr); std::random_device rnd; std::mt19937 mt(rnd()); ll N; cin>>N; string S; cin>>S; vi A(N); rep(i,0,N) cin>>A[i]; vi sum(N+1); rep(i,0,N){ if(S[i]=='B') sum[i+1]=sum[i]+A[i]; else sum[i+1]=sum[i]-A[i]; } cout<<*max_element(ALL(sum))-*min_element(ALL(sum))<