hackercup / 2016 /finals /rainbow_string.md
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2016 Problems
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// RAINBOW STRING // Official Solution by Jacob Plachta #define DEBUG 0 #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include #include using namespace std; #define LL long long #define LD long double #define PR pair #define Fox(i,n) for (i=0; i=0; i--) #define FoxR1(i,n) for (i=n; i>0; i--) #define FoxRI(i,a,b) for (i=b; i>=a; i--) #define Foxen(i,s) for (i=s.begin(); i!=s.end(); i++) #define Min(a,b) a=min(a,b) #define Max(a,b) a=max(a,b) #define Sz(s) int((s).size()) #define All(s) (s).begin(),(s).end() #define Fill(s,v) memset(s,v,sizeof(s)) #define pb push_back #define mp make_pair #define x first #define y second template T Abs(T x) { return(x<0 ? -x : x); } template T Sqr(T x) { return(x*x); } string plural(string s) { return(Sz(s) && s[Sz(s)-1]=='x' ? s+"en" : s+"s"); } const int INF = (int)1e9; const LD EPS = 1e-9; const LD PI = acos(-1.0); //#if DEBUG #define GETCHAR getchar /*#else #define GETCHAR getchar_unlocked #endif*/ bool Read(int &x) { char c,r=0,n=0; x=0; for(;;) { c=GETCHAR(); if ((c<0) && (!r)) return(0); if ((c=='-') && (!r)) n=1; else if ((c>='0') && (c<='9')) x=x*10+c-'0',r=1; else if (r) break; } if (n) x=-x; return(1); } #define LIM 400005 int N,SZ; char S[LIM],C[LIM]; int sum[LIM][26]; int sz,P[20][LIM]; pair V[LIM]; int O[LIM],ind[LIM]; vector Q[LIM],A[LIM],B[LIM]; int BLT[(1<<18)+1]; void BuildSuffixArray() { int i,s; if (N==1) { sz=1; P[0][0]=0; return; } Fox(i,N) P[0][i]=S[i]; for (sz=s=1; s=BLT[t]) { i=t; k-=BLT[t]; } b>>=1; } return(i); } int main() { if (DEBUG) freopen("in.txt","r",stdin); int T,t; int M; int i,j,k,c,s; LL ans[26]; Read(T); Fox1(t,T) { Read(N),Read(M); scanf("%s%s",&S,&C); Fox(i,M) { Read(j),Read(k); Q[j].pb(k); } Fill(sum,0); Fox1(i,N) Fox(j,26) sum[i][j]=sum[i-1][j]+bool(S[i-1]=='A'+j); BuildSuffixArray(); Fox(i,N) { O[i]=P[sz-1][i]; ind[O[i]]=i; } j=k=1; FoxR(i,N) { j++,k++; if (C[i]=='G') j=1; if (C[i]=='R') k=1; if (j<k) { A[j].pb(O[i]); B[k].pb(O[i]); } } Fill(BLT,0),s=0; for (SZ=1; SZ<N; SZ<<=1); Fill(ans,0); Fox1(i,N) { Fox(j,Sz(A[i])) Update(A[i][j]+1,1),s++; Fox(j,Sz(B[i])) Update(B[i][j]+1,-1),s--; Fox(j,Sz(Q[i])) { k=ind[Query(Q[i][j]-1)]; Fox(c,26) ans[c]+=sum[k+i][c]-sum[k][c]; } } printf("Case #%d:",t); Fox(i,26) printf(" %lld",ans[i]); printf("\n"); Fox1(i,N+1) { A[i].clear(); B[i].clear(); Q[i].clear(); } } return(0); }