Submission #3011381
Source Code Expand
#include <bits/stdc++.h> #define MAXN 200005 using namespace std; int data[MAXN]; bool flag[MAXN]; int n; int u; inline void read(int &x){ x=0;char c=getchar(); while(c<'0' || c>'9')c=getchar(); while(c>='0' && c<='9'){ x=x*10+c-'0'; c=getchar(); } } bool got(int mid) { for(int i=1;i<=u;++i) flag[i]=(data[i]>=mid); if((flag[u/2]==1&&flag[u/2+1]==1)||(flag[u/2+1]==1&&flag[u/2+2]==1)) return true; if((flag[u/2]==0&&flag[u/2+1]==0)||(flag[u/2+1]==0&&flag[u/2+2]==0)) return false; else{ int k1=-1,l1=-1,k2=-1,l2=-1; for(int i=u/2;i>=1;--i) if(flag[i]==flag[i-1]){ k1=flag[i]; l1=u/2-i; break; } for(int i=u/2+2;i<=u;++i) if(flag[i]==flag[i+1]){ k2=flag[i]; l2=u/2+2-i; break; } if(k1==k2&&k1==1) return true; else if(k1==k2&&k1==0) return false; else if(k1==-1&&k2==0) return false; else if(k1==-1&&k2==1) return true; else if(k1==0&&k2==-1) return false; else if(k1==1&&k2==-1) return true; else{ if(k1==0&&k2==1) if(l1>l2) return true; else if(l1<l2) return false; else return flag[u/2+1]; else if(k1==1&&k2==0) if(l1>l2) return false; else if(l1<l2) return true; else return flag[u/2+1]; else return flag[u/2+1]; } } for(int i=1;i<=u;++i) flag[i]=(data[i]>=mid); /* int l=n,r=n; while(l>1&&flag[l-1]!=flag[l])l--; while(r<2*n-1&&flag[r+1]!=flag[r])r++; if(l==1&&r==2*n-1) return (n&1)?flag[n]:(flag[n]^1); return n-l<r-n?flag[l]:flag[r];*/ } int main() { cin>>n; u=2*n-1; for(int i=1;i<=u;++i) read(data[i]); int l=1,r=u,mid,result=0; while(l<=r){ mid=(l+r)>>1; if(got(mid)){ result=mid; l=mid+1; } else r=mid-1; } cout<<result<<endl;; return 0; }
Submission Info
Submission Time | |
---|---|
Task | D - Median Pyramid Hard |
User | vjudge3 |
Language | Bash (GNU bash v4.3.11) |
Score | 0 |
Code Size | 1811 Byte |
Status | RE |
Exec Time | 4 ms |
Memory | 700 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 1300 | ||||
Status |
|
|
Set Name | Test Cases |
---|---|
Sample | 0_00.txt, 0_01.txt |
All | 0_00.txt, 0_01.txt, 1_00.txt, 1_01.txt, 1_02.txt, 1_03.txt, 1_04.txt, 1_05.txt, 1_06.txt, 1_07.txt, 1_08.txt, 1_09.txt, 1_10.txt, 1_11.txt, 1_12.txt, 1_13.txt, 1_14.txt, 1_15.txt, 1_16.txt, 1_17.txt, 1_18.txt, 1_19.txt, 1_20.txt, 1_21.txt, 1_22.txt, 1_23.txt, 1_24.txt, 1_25.txt, 1_26.txt, 1_27.txt, 1_28.txt, 1_29.txt, 1_30.txt, 1_31.txt, 1_32.txt, 1_33.txt, 1_34.txt, 1_35.txt, 1_36.txt, 1_37.txt, 1_38.txt, 1_39.txt, 1_40.txt, 1_41.txt, 1_42.txt, 1_43.txt, 1_44.txt, 1_45.txt, 1_46.txt, 1_47.txt, 1_48.txt, 1_49.txt, 1_50.txt, 1_51.txt, 1_52.txt, 1_53.txt, 1_54.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
0_00.txt | RE | 4 ms | 700 KB |
0_01.txt | RE | 4 ms | 572 KB |
1_00.txt | RE | 4 ms | 576 KB |
1_01.txt | RE | 4 ms | 572 KB |
1_02.txt | RE | 4 ms | 572 KB |
1_03.txt | RE | 4 ms | 572 KB |
1_04.txt | RE | 4 ms | 568 KB |
1_05.txt | RE | 4 ms | 576 KB |
1_06.txt | RE | 4 ms | 572 KB |
1_07.txt | RE | 4 ms | 576 KB |
1_08.txt | RE | 4 ms | 576 KB |
1_09.txt | RE | 4 ms | 572 KB |
1_10.txt | RE | 4 ms | 576 KB |
1_11.txt | RE | 4 ms | 572 KB |
1_12.txt | RE | 4 ms | 572 KB |
1_13.txt | RE | 4 ms | 572 KB |
1_14.txt | RE | 4 ms | 572 KB |
1_15.txt | RE | 4 ms | 572 KB |
1_16.txt | RE | 4 ms | 572 KB |
1_17.txt | RE | 4 ms | 572 KB |
1_18.txt | RE | 4 ms | 576 KB |
1_19.txt | RE | 4 ms | 576 KB |
1_20.txt | RE | 4 ms | 576 KB |
1_21.txt | RE | 4 ms | 572 KB |
1_22.txt | RE | 4 ms | 576 KB |
1_23.txt | RE | 4 ms | 576 KB |
1_24.txt | RE | 4 ms | 572 KB |
1_25.txt | RE | 4 ms | 576 KB |
1_26.txt | RE | 4 ms | 572 KB |
1_27.txt | RE | 4 ms | 572 KB |
1_28.txt | RE | 4 ms | 572 KB |
1_29.txt | RE | 4 ms | 572 KB |
1_30.txt | RE | 4 ms | 572 KB |
1_31.txt | RE | 4 ms | 568 KB |
1_32.txt | RE | 4 ms | 572 KB |
1_33.txt | RE | 4 ms | 568 KB |
1_34.txt | RE | 4 ms | 572 KB |
1_35.txt | RE | 4 ms | 568 KB |
1_36.txt | RE | 4 ms | 572 KB |
1_37.txt | RE | 4 ms | 572 KB |
1_38.txt | RE | 4 ms | 576 KB |
1_39.txt | RE | 4 ms | 568 KB |
1_40.txt | RE | 4 ms | 572 KB |
1_41.txt | RE | 4 ms | 568 KB |
1_42.txt | RE | 4 ms | 576 KB |
1_43.txt | RE | 4 ms | 576 KB |
1_44.txt | RE | 4 ms | 576 KB |
1_45.txt | RE | 4 ms | 572 KB |
1_46.txt | RE | 4 ms | 572 KB |
1_47.txt | RE | 4 ms | 572 KB |
1_48.txt | RE | 4 ms | 572 KB |
1_49.txt | RE | 4 ms | 572 KB |
1_50.txt | RE | 4 ms | 576 KB |
1_51.txt | RE | 4 ms | 572 KB |
1_52.txt | RE | 4 ms | 572 KB |
1_53.txt | RE | 4 ms | 576 KB |
1_54.txt | RE | 4 ms | 576 KB |