Submission #284033

#TimeUsernameProblemLanguageResultExecution timeMemory
284033AMnuBubble Sort 2 (JOI18_bubblesort2)C++14
0 / 100
35 ms3584 KiB
#include "bubblesort2.h" #include <bits/stdc++.h> #define pii pair<int,int> #define i1 first #define i2 second using namespace std; const int INF=1e6+5; int N, Q; vector<int> H; vector<pii> S; struct segment { int L, R; int val, cnt, lazy; segment *lef, *rig; void build(int x,int y) { L=x; R=y; val=-INF; cnt=0; lazy=0; if (x==y) { return; } int T; T=(L+R)/2; lef=new segment; lef->build(L,T); rig=new segment; rig->build(T+1,R); return; } void balance() { if (!lazy) { return; } lef->val+=lazy; lef->lazy+=lazy; rig->val+=lazy; rig->lazy+=lazy; lazy=0; return; } void update(int x,int y) { if (R<x) { return; } if (L>=x) { val+=y; lazy+=y; return; } balance(); lef->update(x,y); rig->update(x,y); val=max(lef->val,rig->val); return; } int query(int x) { if (L>x) { return 0; } if (R<=x) { return cnt; } return lef->query(x)+rig->query(x); } void set(int x,int y,int z) { if (L==R) { val=y; cnt=z; return; } int T; T=(L+R)/2; if (x<=T) { lef->set(x,y,z); } else { rig->set(x,y,z); } cnt=lef->cnt+rig->cnt; val=max(lef->val,rig->val); } } data; void del(pii x) { int y=lower_bound(S.begin(),S.end(),x)-S.begin(); data.set(y,-INF,0); data.update(y+1,1); } void add(pii x) { int y=lower_bound(S.begin(),S.end(),x)-S.begin(); data.set(y,x.i2-data.query(y-1),1); data.update(y+1,-1); } vector<int> countScans(vector<int> A,vector<int> X,vector<int> V){ N=A.size(); Q=X.size(); H=vector<int>(Q); S=vector<pii>(N+Q); for (int i=0;i<N;i++) { S[i]={A[i],i}; } for (int i=0;i<Q;i++) { S[i+N]={V[i],X[i]}; } sort(S.begin(),S.end()); data.build(0,N+Q-1); for (int i=0;i<N;i++) { add({A[i],i}); } for (int i=0;i<Q;i++) { del({A[X[i]],X[i]}); A[X[i]]=V[i]; add({A[X[i]],X[i]}); H[i]=data.val; } return H; }
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