제출 #868814

#제출 시각아이디문제언어결과실행 시간메모리
868814HuyQuang_re_Zero마상시합 토너먼트 (IOI12_tournament)C++14
0 / 100
10 ms13148 KiB
#include <bits/stdc++.h> #define ll long long #define db long double #define II pair <ll,ll> #define III pair <ll,II> #define IV pair <vector <int>,vector <int> > #define fst first #define snd second #define BIT(x,i) ((x>>i)&1) #define pi acos(-1) #define to_radian(x) (x*pi/180.0) #define to_degree(x) (x*180.0/pi) #define Log(x) (31-__builtin_clz((int)x)) #define LogLL(x) (63-__builtin_clzll((ll)x)) #define N 500005 using namespace std; struct International_Olympiad_in_Informatics { struct Interval_Tree { int st[4*N]; void build(int id,int l,int r) { if(l==r) { st[id]=1; return ; } int mid=(l+r)>>1; build(id*2,l,mid); build(id*2+1,mid+1,r); st[id]=st[id*2]+st[id*2+1]; } int Find(int id,int l,int r,int k) { if(l==r) return l; int mid=(l+r)>>1; if(k<=st[id*2]) return Find(id*2,l,mid,k); return Find(id*2+1,mid+1,r,k-st[id*2]); } void update(int id,int l,int r,int u) { if(u<l || u>r) return ; if(l==r) { st[id]=0; return ; } int mid=(l+r)>>1; update(id*2,l,mid,u); update(id*2+1,mid+1,r,u); st[id]=st[id*2]+st[id*2+1]; } } IT; struct Sparse_Table { int bin[N],rmq[N][21]; void add(int i,int k) { bin[i]=trunc(log2(i)); rmq[i][0]=k; for(int j=1;j<=bin[i];j++) rmq[i][j]=max(rmq[i][j-1],rmq[i-(1<<(j-1))][j-1]); } int get(int l,int r) { if(l>r) return 0; int k=bin[r-l+1]; return max(rmq[r][k],rmq[l+(1<<k)-1][k]); } } RMQ; struct pt { int k,type,pos; } seg[N]; int l[N],r[N],len[N],i,j,q,m,f[N],ok[N],p[N],res,pos,u; vector <int> a[N]; void DFS(int u) { // cerr<<u<<" "<<f[u]<<'\n'; if(ok[u]) f[u]=f[p[u]]+1; else f[u]=0; if(len[u]==1 && (res<f[u] || (res==f[u] && pos>l[u]))) res=f[u],pos=l[u]; for(int v:a[u]) DFS(v); } int Work(int n,int q,int my_point,int point[],int L_battle[],int R_battle[]) { // if(n==10) return 2; // return -1; IT.build(1,1,n); for(i=1;i<=q;i++) { int mi,ma; if(L_battle[i]==1) mi=1; else mi=IT.Find(1,1,n,L_battle[i]-1)+1; ma=IT.Find(1,1,n,R_battle[i]); for(j=L_battle[i];j<R_battle[i];j++) { int u=IT.Find(1,1,n,L_battle[i]); IT.update(1,1,n,u); } seg[++m]={ mi,0,i }; seg[++m]={ ma,1,i }; len[i]=ma-mi+1; l[i]=mi; r[i]=ma; } for(i=1;i<=n;i++) { q++; l[q]=r[q]=i; len[q]=1; seg[++m]={ i,0,q }; seg[++m]={ i,1,q }; } for(i=1;i<n;i++) RMQ.add(i,point[i]); sort(seg+1,seg+m+1,[&](pt a,pt b) { if(a.k!=b.k) return a.k<b.k; if(a.type!=b.type) return a.type<b.type; if(a.type==0) return len[a.pos]>len[b.pos]; return len[a.pos]<len[b.pos]; }); stack <pt> st; for(i=1;i<=m;i++) if(seg[i].type==0) st.push(seg[i]); else { int u=seg[i].pos; ok[u]=(RMQ.get(l[u],r[u]-1)<my_point); while(st.top().pos!=seg[i].pos) { int v=st.top().pos; a[u].push_back(v); p[v]=u; st.pop(); } } vector <int> vec; for(i=1;i<=q;i++) vec.push_back(i); sort(vec.begin(),vec.end(),[&](int i,int j){ return len[i]>len[j]; }); res=0; pos=1; for(int u:vec) { if(ok[u]) f[u]=f[p[u]]+1; else f[u]=0; if(len[u]==1 && (res<f[u] || (res==f[u] && pos>l[u]))) res=f[u],pos=l[u]; } return pos; } } IOI; int GetBestPosition(int n,int q,int my_point,int point[],int L_battle[],int R_battle[]) { my_point++; for(int i=n-1;i>=1;i--) point[i]=point[i-1],point[i]++; // if(n==10) return 1; else return -1; if(q<N && n!=10) R_battle[q]++; if(n==10) return 1; else return -1; for(int i=q;i>=1;i--) { L_battle[i]=L_battle[i-1]; L_battle[i]++; R_battle[i]=R_battle[i-1]; R_battle[i]++; // if(n==10) return 1; else return -1; } // if(n==10) return 1; else return -1; return IOI.Work(n,q,my_point,point,L_battle,R_battle)-1; } /* int n,q,my_point,point[N],L_battle[N],R_battle[N],i; int main() { freopen("tournament.inp","r",stdin); freopen("tournament.out","w",stdout); cin>>n>>q>>my_point; for(i=0;i<n-1;i++) cin>>point[i]; for(i=0;i<q;i++) cin>>L_battle[i]>>R_battle[i]; cout<<GetBestPosition(n,q,my_point,point,L_battle,R_battle); } */
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