Submission #2555436


Source Code Expand

#include <bits/stdc++.h>
#define rep(i,n) for(int i=0;i<(n);i++)
#define loop(i,x,n) for(int i=(x);i<(n);i++)
#define all(v) (v).begin(),(v).end()
#define int long long
using namespace std;
const int MOD=1e9+7;
const int INF=1e15;
template<typename T> void cmax(T &a, T b) {a = max(a, b);}
template<typename T> void cmin(T &a, T b) {a = min(a, b);}


signed main(){
  int n;
  cin>>n;
  map<int,int> mp;
  set<int> s;
  rep(i,n){
    int a;cin>>a;
    mp[a]++;
    s.insert(a);
  }
  int res=0;
  for(auto x:s){
    if(mp[x]%2==0){
      mp[x]=2;
    }else{
      mp[x]=1;
      res++;
    }
  }
  //cout<<res<<endl;
  // for(auto x:mp){
  //   cout<<x.first<<' '<<x.second<<endl;
  // }
  int two=0;
  for(auto x:s){
    if(mp[x]==2)two++;
  }
  //cout<<two<<endl;
  if(two%2==0){
    res+=two;
  }else{
    res+=(two/2)*2;
  }
  cout<<res<<endl;

 return 0;
}

Submission Info

Submission Time
Task D - Card Eater
User fuu32
Language C++14 (GCC 5.4.1)
Score 400
Code Size 911 Byte
Status AC
Exec Time 109 ms
Memory 11136 KB

Judge Result

Set Name Sample All
Score / Max Score 0 / 0 400 / 400
Status
AC × 2
AC × 17
Set Name Test Cases
Sample 00_example_01.txt, 00_example_02.txt
All 00_example_01.txt, 00_example_02.txt, 01.txt, 02.txt, 03.txt, 04.txt, 05.txt, 06.txt, 07.txt, 08.txt, 09.txt, 10.txt, 11.txt, 12.txt, 13.txt, 14.txt, 15.txt
Case Name Status Exec Time Memory
00_example_01.txt AC 1 ms 256 KB
00_example_02.txt AC 1 ms 256 KB
01.txt AC 1 ms 256 KB
02.txt AC 3 ms 256 KB
03.txt AC 1 ms 256 KB
04.txt AC 1 ms 256 KB
05.txt AC 1 ms 256 KB
06.txt AC 33 ms 256 KB
07.txt AC 33 ms 256 KB
08.txt AC 61 ms 1280 KB
09.txt AC 33 ms 256 KB
10.txt AC 32 ms 256 KB
11.txt AC 58 ms 1024 KB
12.txt AC 33 ms 256 KB
13.txt AC 47 ms 512 KB
14.txt AC 109 ms 11136 KB
15.txt AC 29 ms 256 KB