Submission #991738


Source Code Expand

#include<iostream>
#include<cstdio>
#include<algorithm>
#include<set>
#include<map>
#include<queue>
#include<cassert>
#define PB push_back
#define MP make_pair
#define sz(v) (in((v).size()))
#define forn(i,n) for(in i=0;i<(n);++i)
#define forv(i,v) forn(i,sz(v))
#define fors(i,s) for(auto i=(s).begin();i!=(s).end();++i)
#define all(v) (v).begin(),(v).end()
using namespace std;
typedef long long in;
typedef vector<in> VI;
typedef vector<VI> VVI;
VI cnt;
int main(){
  ios::sync_with_stdio(0);
  cin.tie(0);
  in n,m,x;
  cin>>n>>m;
  cnt.resize(m);
  forn(z,n){
    cin>>x;
    ++cnt[x%m];
  }
  in sm=0;
  in c;
  for(in i=0;i<=(m-i);++i){
    c=cnt[i];
    if(i!=m-i && i!=0)
      c+=cnt[m-i];
    sm+=c/2;
  }
  cout<<sm<<endl;
  return 0;
}

Submission Info

Submission Time
Task D - Pair Cards
User w4yneb0t
Language C++14 (GCC 5.4.1)
Score 0
Code Size 789 Byte
Status WA
Exec Time 12 ms
Memory 1024 KB

Judge Result

Set Name sample all
Score / Max Score 0 / 0 0 / 700
Status
AC × 1
WA × 1
AC × 27
WA × 5
Set Name Test Cases
sample sample-01.txt, sample-02.txt
all 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
Case Name Status Exec Time Memory
01-01.txt AC 3 ms 256 KB
01-02.txt AC 11 ms 256 KB
01-03.txt AC 11 ms 384 KB
01-04.txt AC 11 ms 256 KB
01-05.txt AC 11 ms 256 KB
01-06.txt AC 11 ms 256 KB
01-07.txt AC 11 ms 256 KB
01-08.txt AC 11 ms 256 KB
01-09.txt AC 11 ms 256 KB
01-10.txt WA 12 ms 512 KB
01-11.txt AC 12 ms 1024 KB
01-12.txt AC 11 ms 256 KB
01-13.txt AC 11 ms 640 KB
01-14.txt AC 11 ms 256 KB
01-15.txt AC 11 ms 256 KB
01-16.txt AC 11 ms 256 KB
01-17.txt AC 11 ms 256 KB
01-18.txt AC 11 ms 256 KB
01-19.txt AC 11 ms 384 KB
01-20.txt AC 12 ms 1024 KB
01-21.txt AC 11 ms 256 KB
01-22.txt AC 11 ms 256 KB
01-23.txt AC 11 ms 256 KB
01-24.txt WA 11 ms 256 KB
01-25.txt WA 11 ms 512 KB
01-26.txt AC 12 ms 1024 KB
01-27.txt AC 8 ms 1024 KB
01-28.txt AC 4 ms 1024 KB
01-29.txt WA 3 ms 512 KB
01-30.txt AC 4 ms 1024 KB
sample-01.txt AC 3 ms 256 KB
sample-02.txt WA 3 ms 256 KB