CODE FESTIVAL 2016 Final

Submission #10071688

Source codeソースコード

#include <bits/stdc++.h>
using namespace std;
#define modulo 1000000007
#define mod(mod_x) ((((long long)mod_x+modulo))%modulo)
#define Inf 1000000000000

int main(){

	int N,M;
	cin>>N>>M;
	
	map<int,int> mp;
	for(int i=0;i<N;i++){
		int a;
		cin>>a;
		mp[a]++;
	}
	
	vector<int> num(M,0),Pnum(M,0);
	
	for(auto a:mp){
		Pnum[a.first%M] += a.second/2;
		num[a.first%M] += a.second;
	}
	
	int ans = 0;
	
	for(int i=0;i<=M/2;i++){
		if(i+i==M||i==0){
			ans += num[i]/2;
		}
		else{
			int x = min(num[i],num[M-i]);
			ans += x;
			num[i] -= x;
			num[M-i] -= x;
			
			ans += min(num[i]/2,Pnum[i]);
			ans += min(num[M-i]/2,Pnum[M-i]);
		}
	}
	
	cout<<ans<<endl;
	
	return 0;
}

Submission

Task問題 D - Pair Cards
User nameユーザ名 m_99
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 722 Byte
File nameファイル名
Exec time実行時間 66 ms
Memory usageメモリ使用量 5760 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 1 ms 256 KB
01-02.txt AC 57 ms 3200 KB
01-03.txt AC 57 ms 3200 KB
01-04.txt AC 57 ms 3200 KB
01-05.txt AC 57 ms 3200 KB
01-06.txt AC 58 ms 3200 KB
01-07.txt AC 57 ms 3200 KB
01-08.txt AC 56 ms 3200 KB
01-09.txt AC 57 ms 3200 KB
01-10.txt AC 57 ms 3584 KB
01-11.txt AC 60 ms 3968 KB
01-12.txt AC 29 ms 256 KB
01-13.txt AC 29 ms 640 KB
01-14.txt AC 65 ms 4992 KB
01-15.txt AC 65 ms 4992 KB
01-16.txt AC 65 ms 4992 KB
01-17.txt AC 65 ms 4992 KB
01-18.txt AC 65 ms 4992 KB
01-19.txt AC 65 ms 4992 KB
01-20.txt AC 66 ms 5760 KB
01-21.txt AC 37 ms 384 KB
01-22.txt AC 37 ms 384 KB
01-23.txt AC 37 ms 384 KB
01-24.txt AC 37 ms 384 KB
01-25.txt AC 37 ms 640 KB
01-26.txt AC 38 ms 1152 KB
01-27.txt AC 31 ms 3328 KB
01-28.txt AC 3 ms 1152 KB
01-29.txt AC 2 ms 640 KB
01-30.txt AC 2 ms 1024 KB
sample-01.txt AC 1 ms 256 KB
sample-02.txt AC 1 ms 256 KB