Submission #1516837
Source Code Expand
#include<bits/stdc++.h> using namespace std; #define ll long long int #define pb push_back #define mp make_pair int abs(int x){ if(x<0) return x*-1; else return x; } int main(){ int n; cin>>n; int i,j; pair<int,int> a[n+1]; for(i=1;i<=n;i++){ int g; cin>>g; a[i]=mp(g,i); } sort(a+1,a+n+1); int cn1=0; int cn2=0; for(i=n;i>=1;i--){ int x=abs(i-a[i].second); if(x%2){ if(a[i].second%2) cn1++; else cn2++; } } int ans=min(cn1,cn2); int x=abs(cn1-cn2); ans+=x; if(x%2) ans++; cout<<ans<<endl; return 0; }
Submission Info
Submission Time | |
---|---|
Task | A - Wanna go back home |
User | adam1007 |
Language | C++14 (GCC 5.4.1) |
Score | 0 |
Code Size | 610 Byte |
Status | WA |
Exec Time | 1 ms |
Memory | 256 KB |
Judge Result
Set Name | Sample | All | ||||
---|---|---|---|---|---|---|
Score / Max Score | 0 / 0 | 0 / 200 | ||||
Status |
|
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Set Name | Test Cases |
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Sample | s1.txt, s2.txt, s3.txt, s4.txt |
All | 01.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 13.txt, 15.txt, s1.txt, s2.txt, s3.txt, s4.txt |
Case Name | Status | Exec Time | Memory |
---|---|---|---|
01.txt | WA | 1 ms | 256 KB |
04.txt | WA | 1 ms | 256 KB |
05.txt | WA | 1 ms | 256 KB |
06.txt | WA | 1 ms | 256 KB |
07.txt | WA | 1 ms | 256 KB |
08.txt | WA | 1 ms | 256 KB |
09.txt | WA | 1 ms | 256 KB |
10.txt | WA | 1 ms | 256 KB |
11.txt | WA | 1 ms | 256 KB |
13.txt | WA | 1 ms | 256 KB |
15.txt | WA | 1 ms | 256 KB |
s1.txt | WA | 1 ms | 256 KB |
s2.txt | WA | 1 ms | 256 KB |
s3.txt | WA | 1 ms | 256 KB |
s4.txt | WA | 1 ms | 256 KB |