CODE FESTIVAL 2016 Final

Submission #1747921

Source codeソースコード

#pragma GCC optimize("O3")
#include<bits/stdc++.h>
#define rc(x) return cout<<x<<endl,0
#define pb push_back
#define in insert
#define er erase
#define fd find
#define fr first
#define sc second
typedef long long ll;
const ll INF=0x3f3f3f3f3f3f3f3f;
const ll llinf=LLONG_MAX;
const int inf=INT_MAX;
const int nmax=1e5+5;
const int mod=1e9+7;
using namespace std;
int n,m,x,a[nmax],nr[nmax],tot[nmax],i,ans;
int main()
{
    //freopen("sol.in","r",stdin);
	//freopen("sol.out","w",stdout);
	ios_base::sync_with_stdio(false);cin.tie(0);cerr.tie(0);cout.tie(0);
    cin>>n>>m;
    for(i=1;i<=n;i++)cin>>x,nr[x]++,a[x%m]++;
    for(i=1;i<=100000;i++)tot[i%m]+=nr[i]/2;
    ans=a[0]/2;
    if(m%2==0)ans+=a[m/2]/2;
    for(i=1;i<=(m-1)/2;i++)
	{
	   if(a[i]<a[m-i])ans+=min((a[m-i]-a[i])/2,tot[m-i])+a[i];
	   else ans+=min((a[i]-a[m-i])/2,tot[i])+a[m-i];
	}
	cout<<ans<<endl;
	return 0;
}

Submission

Task問題 D - Pair Cards
User nameユーザ名 InfoAdict
Created time投稿日時
Language言語 C++14 (GCC 5.4.1)
Status状態 AC
Score得点 700
Source lengthソースコード長 918 Byte
File nameファイル名
Exec time実行時間 11 ms
Memory usageメモリ使用量 1408 KB

Test case

Set

Set name Score得点 / Max score Cases
sample - sample-01.txt,sample-02.txt
all 700 / 700 sample-01.txt,sample-02.txt,01-01.txt,01-02.txt,01-03.txt,01-04.txt,01-05.txt,01-06.txt,01-07.txt,01-08.txt,01-09.txt,01-10.txt,01-11.txt,01-12.txt,01-13.txt,01-14.txt,01-15.txt,01-16.txt,01-17.txt,01-18.txt,01-19.txt,01-20.txt,01-21.txt,01-22.txt,01-23.txt,01-24.txt,01-25.txt,01-26.txt,01-27.txt,01-28.txt,01-29.txt,01-30.txt,sample-01.txt,sample-02.txt

Test case

Case name Status状態 Exec time実行時間 Memory usageメモリ使用量
01-01.txt AC 2 ms 256 KB
01-02.txt AC 10 ms 640 KB
01-03.txt AC 10 ms 640 KB
01-04.txt AC 10 ms 640 KB
01-05.txt AC 10 ms 640 KB
01-06.txt AC 10 ms 640 KB
01-07.txt AC 10 ms 640 KB
01-08.txt AC 10 ms 640 KB
01-09.txt AC 10 ms 640 KB
01-10.txt AC 11 ms 1024 KB
01-11.txt AC 11 ms 1408 KB
01-12.txt AC 10 ms 256 KB
01-13.txt AC 10 ms 384 KB
01-14.txt AC 10 ms 640 KB
01-15.txt AC 10 ms 640 KB
01-16.txt AC 10 ms 640 KB
01-17.txt AC 10 ms 640 KB
01-18.txt AC 10 ms 640 KB
01-19.txt AC 10 ms 768 KB
01-20.txt AC 11 ms 1408 KB
01-21.txt AC 10 ms 640 KB
01-22.txt AC 10 ms 640 KB
01-23.txt AC 10 ms 640 KB
01-24.txt AC 10 ms 640 KB
01-25.txt AC 10 ms 896 KB
01-26.txt AC 10 ms 1408 KB
01-27.txt AC 6 ms 1024 KB
01-28.txt AC 3 ms 1408 KB
01-29.txt AC 2 ms 1024 KB
01-30.txt AC 2 ms 768 KB
sample-01.txt AC 2 ms 256 KB
sample-02.txt AC 2 ms 256 KB