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  1. #include<bits/stdc++.h>
  2. using namespace std;
  3. #define fast ios_base::sync_with_stdio(false),cout.tie(NULL),cin.tie(NULL);
  4. #define N "\n";
  5. #define all(v) v.begin(),v.end()
  6. #define rall(v) v.rbegin(),v.rend()
  7. #define sz(s) s.size()
  8. typedef  long long ll;
  9. #define ull unsigned long long
  10. #define fi first
  11. #define se second
  12. int MOD=1e9+7;
  13. ll mul(ll a,ll b){return (1ll*a*b)%MOD;}
  14. int sub(ll a,ll b){return ((a-b)%MOD+MOD)%MOD;}
  15. int add(ll a,ll b){return ((a%MOD)+(b%MOD))%MOD;}
  16. ll lcm(ll x, ll y) {return x / __gcd(x, y) * y;}
  17. bool iseven(ll n) {if ((n & 1)){return 0;}else {return 1;}}
  18. ll ncr(int n,int m){ll z=1;for(int i=0;i<m;i++){z=z*(n-i)/(i+1);}return z;}
  19. void swp(ll &a,ll &b){a^=b;b^=a;a^=b;}
  20. ll fp(int n,int p){if(!p){return 1;}ll rem=fp(n,p>>1);rem*=rem;if(p&1){rem*=n;}return rem;}
  21. const ll M=3e7+5;
  22. int main() {
  23. 	fast
  24. 		int t=1;
  25. 		 cin>>t;
  26. 		while(t--){
  27. 			int n,l,r;
  28. 			cin>>n>>l>>r;
  29. 			vector<int>v(l),v1;
  30. 			map<int,int>mp,mp1;
  31. 			for(int i=0;i<l;i++){
  32. 				cin>>v[i];
  33. 				mp[v[i]]++;
  34. 			}
  35. 			int socks=0;
  36. 			for(int i=0;i<r;i++){
  37. 				int num;
  38. 				cin>>num;
  39. 				if(mp[num]){
  40. 					mp[num]--;
  41. 					socks++;
  42. 				}
  43. 				else{
  44. 					mp1[num]++;
  45. 					v1.push_back(num);
  46. 				}
  47. 			}
  48. 			if(l==r){
  49. 				cout<<(sz(v1))<<N;
  50. 			}
  51. 			else if(l>r){
  52. 				for(auto&it:mp){
  53. 					if(it.second>1){
  54. 						while(l>r&&it.second>1){
  55. 							socks++;
  56. 							r++;
  57. 							it.second--;
  58. 							l--;
  59. 						}
  60. 					}
  61. 				}
  62. 				cout<<r<<N;
  63. 			}
  64. 			else{
  65. 				for(auto&it:mp1){
  66. 					if(it.second>1){
  67. 						while(l<r&&it.second>1){
  68. 							socks++;
  69. 							r--;
  70. 							it.second--;
  71. 							l++;
  72. 						}
  73. 					}
  74. 				}
  75. 				cout<<l<<N;
  76. 			}
  77.  
  78. 		}
  79. }
Success #stdin #stdout 0.01s 5464KB
comments (?)
stdin
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4
6 3 3
1 2 3 2 2 2
6 2 4
1 1 2 2 2 2
6 5 1
6 5 4 3 2 1
4 0 4
4 4 4 3
stdout
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2
3
1
2
https://ideone.com/O9fSdn
language:
C++ (gcc 8.3)
created:
1 year ago
visibility:
public

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