CODE FESTIVAL 2016 Final

Submission #5419821

Source codeソースコード

#include <iostream>
#include <vector>
#include <cmath>
#include <algorithm>
using namespace std;

int main() {
	int N, M; cin >> N >> M;
	vector<int> X(100001, 0), sum(M, 0), cand(M, 0);
	for(int i=0; i<N; ++i){
	    int a; cin >> a;
	    ++X[a];
	    ++sum[a%M];
	}
	for(int i=0; i<100001; ++i) cand[i%M] += X[i]/2;
	int ans=sum[0]/2;
	for(int i=1; i*2<=M; ++i){
	    if(i*2==M){
	        ans += sum[i]/2;
	        break;
	    }
	    int mn=(sum[i]<sum[M-i] ? i : M-i);
	    ans += sum[mn];
	    ans += min((sum[M-mn]-sum[mn])/2, cand[M-mn]);
	}
	cout << ans << endl;
	return 0;
}

Submission

Task問題 D - Pair Cards
User nameユーザ名 ward1302
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 610 Byte
File nameファイル名
Exec time実行時間 32 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 640 KB
01-02.txt AC 29 ms 640 KB
01-03.txt AC 30 ms 640 KB
01-04.txt AC 30 ms 640 KB
01-05.txt AC 30 ms 640 KB
01-06.txt AC 31 ms 640 KB
01-07.txt AC 30 ms 640 KB
01-08.txt AC 30 ms 640 KB
01-09.txt AC 30 ms 640 KB
01-10.txt AC 30 ms 896 KB
01-11.txt AC 32 ms 1408 KB
01-12.txt AC 30 ms 640 KB
01-13.txt AC 30 ms 1024 KB
01-14.txt AC 30 ms 640 KB
01-15.txt AC 30 ms 640 KB
01-16.txt AC 31 ms 640 KB
01-17.txt AC 30 ms 640 KB
01-18.txt AC 30 ms 640 KB
01-19.txt AC 30 ms 768 KB
01-20.txt AC 30 ms 1408 KB
01-21.txt AC 30 ms 640 KB
01-22.txt AC 30 ms 640 KB
01-23.txt AC 30 ms 640 KB
01-24.txt AC 30 ms 640 KB
01-25.txt AC 30 ms 896 KB
01-26.txt AC 30 ms 1408 KB
01-27.txt AC 16 ms 1408 KB
01-28.txt AC 3 ms 1408 KB
01-29.txt AC 2 ms 896 KB
01-30.txt AC 2 ms 1408 KB
sample-01.txt AC 2 ms 640 KB
sample-02.txt AC 2 ms 640 KB