Submission #358484

#TimeUsernameProblemLanguageResultExecution timeMemory
358484medmdgWall (IOI14_wall)C++17
0 / 100
3063 ms14060 KiB
#include <bits/stdc++.h> #define ll long long using namespace std; const ll N=2000009; int ma[4*N]; int a[4*N]; int mi[4*N]; void build(int l,int r,int p){ ma[p]=200000; mi[p]=0; a[p]=0; if(l==r){ return; } build(l,(l+r)/2,p*2); build((l+r)/2+1,r,p*2+1); return; } void setla(int l,int r,int p){ if(l==r) return; if((l+r)/2-l!=0){ ma[p*2]=max(ma[p*2],mi[p]); mi[p*2]=min(mi[p*2],ma[p]); ma[p*2]=min(ma[p],ma[p*2]); mi[p*2]=max(mi[p*2],mi[p]); }else{ if(a[p*2]>ma[p]) a[p*2]=ma[p]; if(a[p*2]<mi[p]) a[p*2]=mi[p]; } if((l+r)/2+1!=r){ ma[p*2+1]=max(ma[p*2+1],mi[p]); mi[p*2+1]=min(mi[p*2+1],ma[p]); ma[p*2+1]=min(ma[p],ma[p*2+1]); mi[p*2+1]=max(mi[p*2+1],mi[p]); }else{ if(a[p*2+1]>ma[p]) a[p*2+1]=ma[p]; if(a[p*2+1]<mi[p]) a[p*2+1]=mi[p]; } ma[p]=200000; mi[p]=0; return; } void upre(int x,int y,int h,int l,int r,int p){ setla(l,r,p); if(x==l&&l==r){ if(a[p]>h) a[p]=h; return; } if(y<l||x>r) return; if(r<=y&&l>=r){ ma[p]=h; setla(l,r,p); return; } upre(x,y,h,l,(l+r)/2,p*2); upre(x,y,h,(l+r)/2+1,r,p*2+1); return; } void upad(int x,int y,int h,int l,int r,int p){ setla(l,r,p); if(x==l&&l==r){ if(a[p]<h) a[p]=h; return; } if(y<l||x>r) return; if(r<=y&&l>=r){ mi[p]=h; setla(l,r,p); return; } upad(x,y,h,l,(l+r)/2,p*2); upad(x,y,h,(l+r)/2+1,r,p*2+1); return; } vector<int> ans; void over(int l,int r,int p){ setla(l,r,p); if(l==r){ ans.push_back(a[p]); return; } over(l,(l+r)/2,p*2); over((l+r)/2+1,r,p*2+1); return; } void buildWall(int n, int k, int op[], int left[], int right[],int height[], int finalHeight[]){ build(1,n,1); for(int i=0;i<k;i++){ left[i]++; right[i]++; } for(int i=0;i<k;i++){ if(op[i]-1){ upre(left[i],right[i],height[i],1,n,1); }else{ upad(left[i],right[i],height[i],1,n,1); } } over(1,n,1); for(int i=0;i<n;i++) finalHeight[i]=ans[i]; return; }
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