Submission #3011803
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 | |
---|---|
Task | D - Median Pyramid Hard |
User | vjudge4 |
Language | C++14 (GCC 5.4.1) |
Score | 1300 |
Code Size | 987 Byte |
Status | AC |
Exec Time | 26 ms |
Memory | 1792 KB |
Compile Error
./Main.cpp: In function ‘void readin()’: ./Main.cpp:12:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&n); ^ ./Main.cpp:15:26: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a[i]); ^
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 1300 / 1300 | ||||
Status |
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|
Set Name | Test Cases |
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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 | AC | 1 ms | 256 KB |
0_01.txt | AC | 1 ms | 256 KB |
1_00.txt | AC | 1 ms | 256 KB |
1_01.txt | AC | 1 ms | 256 KB |
1_02.txt | AC | 1 ms | 256 KB |
1_03.txt | AC | 23 ms | 1792 KB |
1_04.txt | AC | 23 ms | 1792 KB |
1_05.txt | AC | 26 ms | 1792 KB |
1_06.txt | AC | 26 ms | 1792 KB |
1_07.txt | AC | 26 ms | 1792 KB |
1_08.txt | AC | 26 ms | 1792 KB |
1_09.txt | AC | 23 ms | 1792 KB |
1_10.txt | AC | 23 ms | 1792 KB |
1_11.txt | AC | 26 ms | 1792 KB |
1_12.txt | AC | 26 ms | 1792 KB |
1_13.txt | AC | 25 ms | 1792 KB |
1_14.txt | AC | 26 ms | 1792 KB |
1_15.txt | AC | 24 ms | 1792 KB |
1_16.txt | AC | 24 ms | 1792 KB |
1_17.txt | AC | 24 ms | 1792 KB |
1_18.txt | AC | 24 ms | 1792 KB |
1_19.txt | AC | 24 ms | 1792 KB |
1_20.txt | AC | 23 ms | 1792 KB |
1_21.txt | AC | 23 ms | 1792 KB |
1_22.txt | AC | 23 ms | 1792 KB |
1_23.txt | AC | 25 ms | 1792 KB |
1_24.txt | AC | 25 ms | 1792 KB |
1_25.txt | AC | 24 ms | 1792 KB |
1_26.txt | AC | 24 ms | 1792 KB |
1_27.txt | AC | 24 ms | 1792 KB |
1_28.txt | AC | 25 ms | 1792 KB |
1_29.txt | AC | 24 ms | 1792 KB |
1_30.txt | AC | 24 ms | 1792 KB |
1_31.txt | AC | 24 ms | 1792 KB |
1_32.txt | AC | 25 ms | 1792 KB |
1_33.txt | AC | 24 ms | 1792 KB |
1_34.txt | AC | 24 ms | 1792 KB |
1_35.txt | AC | 24 ms | 1792 KB |
1_36.txt | AC | 24 ms | 1792 KB |
1_37.txt | AC | 24 ms | 1792 KB |
1_38.txt | AC | 25 ms | 1792 KB |
1_39.txt | AC | 24 ms | 1792 KB |
1_40.txt | AC | 24 ms | 1792 KB |
1_41.txt | AC | 25 ms | 1792 KB |
1_42.txt | AC | 24 ms | 1792 KB |
1_43.txt | AC | 25 ms | 1792 KB |
1_44.txt | AC | 24 ms | 1792 KB |
1_45.txt | AC | 24 ms | 1792 KB |
1_46.txt | AC | 24 ms | 1792 KB |
1_47.txt | AC | 23 ms | 1792 KB |
1_48.txt | AC | 24 ms | 1792 KB |
1_49.txt | AC | 24 ms | 1792 KB |
1_50.txt | AC | 24 ms | 1792 KB |
1_51.txt | AC | 23 ms | 1792 KB |
1_52.txt | AC | 24 ms | 1792 KB |
1_53.txt | AC | 23 ms | 1792 KB |
1_54.txt | AC | 23 ms | 1792 KB |