Submission #895580

#	Time	Username	Problem	Language	Result	Execution time	Memory
895580		Litusiano	Cards (LMIO19_korteles)	C++17	19 / 100	1050 ms	38376 KiB

korteles

#pragma GCC optimize("O3,unroll-loops")
#pragma GCC target("avx2,bmi,bmi2,lzcnt,popcnt")
 
#include<bits/stdc++.h>
using namespace std;
// #define int long long
#define s second
#define f first
 
vector<char> find(vector<char> v){
	vector<char> k(4,' ');
	k[3-1] = v[1]; k[4-1] = v[2];
	k[0] = v[3]; k[2-1] = v[4];
	if(k[0] == v[2] && k[2] == v[4] && k[1] == v[1] && k[3] == v[3]) return k;
	return {}; 
}
 
signed main(){
	int n; cin>>n;
	map<pair<char,char>,int> m12,m13,m34,m24;
	map<vector<char>,int> m1234,m123, m124, m134, m234;
	int ans = 0;
	for(int i = 0; i<n; i++){
 
 
		// 100% CHECKED
 
		vector<char> v(5); cin>>v[1]>>v[2]>>v[3]>>v[4];
		if(m34.find({v[1],v[2]}) != m34.end()){
			ans+= m34[{v[1],v[2]}];
		}
		// if(i+1 == n) cerr<<"ANS: "<<ans<<endl;
		if(m12.find({v[3],v[4]}) != m12.end()){
			ans+= m12[{v[3],v[4]}];
		}
		// if(i+1 == n) cerr<<"ANS: "<<ans<<endl;
		if(m13.find({v[2],v[4]}) != m13.end()){
			ans+= m13[{v[2],v[4]}];
		}
		// if(i+1 == n) cerr<<"ANS: "<<ans<<endl;
		if(m24.find({v[1],v[3]}) != m24.end()){
			ans+= m24[{v[1],v[3]}];
		}
 
 
		// cerr<<"ANS: "<<ans<<" "<<v[1]<<v[2]<<v[3]<<" "<<m234[{v[1],v[2],v[3]}]<<endl;
		if(v[2] == v[3] && m234.find({v[2],v[4]}) != m234.end()){
			ans-=m234[{v[2],v[4]}];
		}
		if(v[2] == v[3]) m234[{v[1],v[3]}]++;
 
 
 
		// if(i+1 == n) cerr<<"ANS: "<<ans<<endl;
		ans+= m1234[find(v)];
		// cerr<<"ANS: "<<ans<<" "<<v[2]<<v[3]<<v[4]<<" "<<m123[{v[2],v[3],v[4]}]<<endl;
		if(v[2] == v[3] && m123.find({v[1],v[2]}) != m123.end()){
			ans-=m123[{v[1],v[2]}];
		}
		// cerr<<"ANS: "<<ans<<" "<<v[1]<<v[3]<<v[4]<<" "<<m124[{v[1],v[3],v[4]}]<<endl;
		if(v[1] == v[4] && m124.find({v[1],v[2]}) != m124.end()){
			ans-=m124[{v[1],v[2]}];
		}
		// cerr<<"ANS: "<<ans<<" "<<v[1]<<v[2]<<v[4]<<" "<<m134[{v[1],v[2],v[4]}]<<endl;
		if(v[1] == v[4] && m134.find({v[1],v[3]}) != m134.end()){
			ans-=m123[{v[1],v[3]}];
		}
		
 
		vector<char> v1 = {v[2],v[1],v[4],v[3]};
		if(v[1] != v[2] && v[3] != v[4] && m1234.find(v1) != m1234.end()){
			ans-=m1234[{v[2],v[1],v[4],v[3]}];
		}
		if((v[1] == v[2] || v[3] == v[4]) && !(v[1] == v[2] && v[3] == v[4])){
			// 3!
			if(v[1] == v[2]){
				// what should i do with this? v1 matches 3
				ans+= m1234[v1];
			}
			else{
				ans+= m1234[v1];
			}
		}
		v1 = {v[3],v[4],v[1],v[2]}; // TAKE CARE OF 2 AND 3
		if(v[1] != v[2] && v[3] != v[4] && m1234.find(v1) != m1234.end()){
			ans-=m1234[v1];
		}
 		if((v[1] == v[2] || v[3] == v[4]) && !(v[1] == v[2] && v[3] == v[4])){
			// 3!
			if(v[1] == v[2]){
				// what should i do with this? v1 matches 3
				ans+= m1234[v1];
			}
			else{
				ans+= m1234[v1];
			}
		}

 
 
 
		// if(i+1 == n) cerr<<"ANS: "<<ans<<endl;
		m12[{v[1],v[2]}]++;
		m13[{v[1],v[3]}]++;
		m34[{v[3],v[4]}]++;
		m24[{v[2],v[4]}]++;
		m1234[{v[1],v[2],v[3],v[4]}]++;
 
 
 
 
		
		if(v[4] == v [1]) m134[{v[2],v[4]}]++;
 
		
		if(v[1] == v[4]) m124[{v[3],v[4]}]++;
 
		if(v[2] == v[3]) m123[{v[2],v[4]}]++;
		
	}
	cout<<ans<<endl;
}

• Subtask 1: 0 / 16
• Subtask 2: 0 / 20
• Subtask 3: 0 / 20
• Subtask 4: 19 / 19
• Subtask 5: 0 / 25