Submission #3011795
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define maxn 100000 #define maxm 200000 int n,m; int a[maxm+5]; int c[maxm+5]; void readin(){ scanf("%d",&n); m=n*2-1; for(int i=1;i<=m;i++) { scanf("%d",&a[i]); } } void Turn(int x) { for(int i=1;i<=m;i++){ c[i]=(a[i]>=x); } } bool judge(int x){ Turn(x); int p1=0,p2=m+1; for(int i=n;i>=2;i--){ if(c[i]==c[i-1]){ p1=i; break; } } for(int i=n;i<m;i++) { if(c[i]==c[i+1]) { p2=i; break; } } if(p1==0&&p2==m+1) return c[1]; if(n-p1>p2-n) return c[p2]; else return c[p1]; } int binsearch() { int l=0,r=m; while(l+1<r) { int mid=l+(r-l)/2; if(judge(mid)) l=mid; else r=mid; } if(judge(l+1)) return l+1; if(!judge(l)) return l-1; else return l; } int main(){ readin(); int ans=binsearch(); printf("%d",ans); return 0; }
Submission Info
Submission Time | |
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Task | D - Median Pyramid Hard |
User | vjudge3 |
Language | C++14 (Clang 3.8.0) |
Score | 0 |
Code Size | 987 Byte |
Status | CE |
Compile Error
./Main.cpp:1:9: fatal error: 'bits/stdc++.h' file not found #include<bits/stdc++.h> ^ 1 error generated.